Book 6 - Floor & Ceilings Jan 09

Floors and Ceilings

6

A4_F&C 6_08.qxd:A4_GYPROC_08.qxd 08/12/2008 14:32 Page 5

Notes:

Safety Data Sheets for all Gypsum Industries products are available to download from our website: www.gypsum.ie or from the Technical Sales Departmentat 01 629 8400. Please obtain and refer to all relevant Safety Data Sheets prior to specifying, handling or installing any Gypsum Industries products.

If services are to be included within Gypsum Industries’ building systems, they should be installed in accordance with all available relevant standards,guidelines and recommendations.

The inclusion of Gypsum Industries’ building system specifications within this document does not imply compliance with all aspect of BuildingRegulations. If unsure about the suitability of a building system, please refer to the relevant Technical Guidance Document(s). It is the soleresponsibility of specifiers and end-users to ensure the suitability of a product, system or construction detail for their intended use.

All information contained herein is correct, to the best of our knowledge, at time of going to print (January 2009). However, the information is subjectto change and Gypsum Industries reserves the right to revise product specifications and performance claims without notice.

Floors and Ceilings6

6.1 Introduction 1

6.2 CasoLine MF 4

6.3 GypLyner 18

6.4 GypFloor SILENT 24

6.5 Timber joist ceilings and separating 34

/compartment floors

6.6 Ceiling boards, tiles and planks 48

6.7 Cavity barriers 52

6.8 Semi-exposed soffits 56

CONTENTS

SAFETY FIRST

Ensure that suitable personal protection is worn when handling or installing Gypsum Industries Products/Systems. All relevant Healthand Safety Legislation and Guidelines must be followed. The relevant Gypsum Industries Safety Data Sheets must be referred to prior tospecifying, handling or installing Gypsum Industries Products.

For current information, refer to www.gypsum.ie January 2009

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GENERAL

Gypsum Industries ceilings provide a choice of internallinings to timber joists or concrete floors. A range ofsolutions are available from straightforward direct fixinginto timber joists, through to suspended ceilings. Thesystems cover all building types, and are suitable for both new-build and refurbishment.

Applications cover basic ceiling linings through to the provision of sound insulation, thermal insulation, fireresistance and fire protection to structural steelwork.Gypsum Industries ceilings can also be specified as amembrane to protect roof trusses in loft spaces. Acomprehensive range of Arteco pre-finished gypsum ceilingtiles, boards and planks are available for use in theCasoLine systems. The products combine durability, acousticperformance and aesthetics, and can provide up to 60minutes fire resistance.

A number of sound insulating solutions are given for remedial treatments in conversion work. These includeGypFloor SILENT which provides a means of upgrading thefloor construction, and optimising the performance of theceiling lining.

EnvironmentalGypsum Industries ceiling products are not suitable for usein areas subject to continuously damp or humid conditions.Plasterboards are not suitable for use in temperaturesabove 49˚C but can be subjected to freezing conditionswithout risk of damage.

LoadingGypsum Industries metal framed systems are not designedto take the weight of personnel.

IS EN ISO 9001:2000Gypsum Industries manufacturers plasterboards and plastersunder the IS EN ISO 9001:2000 quality assurance system.

IS EN ISO 14001:1996Gypsum Industries has an environmental managementsystem which complies with the requirements of IS EN ISO14001:1996

Health and SafetySafety Data Sheets for all Gypsum Industries’ products areavailable to download from our website www.gypsum.ie,or via our Technical Sales Department.

FIRE PROTECTION

Gypsum Industries ceiling products provide good fireprotection owing to the unique behaviour of the non-combustible gypsum core when subjected to hightemperatures.

For reaction to fire classifications for Gyproc and Glasrocboards please refer to Section .

Lining selectionTwo high performance fire resistant boards are availablefrom Gypsum Industries – Gyproc FireLine and GyprocMultiBoard. Gyproc FireLine is a cost-effective fire resistantboard suitable for use over a wide range of specifications.Gyproc MultiBoard offers similar high levels of fireresistance, but gives the additional benefits of durabilityand flexibility. The inherent flexibility of Gyproc MultiBoardmakes it ideal for both convex and concave curved surfaces,an example application being a barrel vault ceiling.

Fire resistanceGypsum Industries floor and ceiling systems can provideprotection to structural steel, steel beams supportingconcrete floors, and to timber joist floors.

Plain-edged or badly fitted tongue and groove (t & g) floor

boarding contributes little to the overall fire resistance of

the floor. Well fitted t & g boarding can contribute

additional time to integrity and insulation. The addition of

a hardboard or plywood covering to plain-edged or badly

fitted t & g floor boarding can upgrade the contribution to

that of well fitted t & g boarding.

2.1

Introduction 6.1

1January 2009 For current information, refer to www.gypsum.ie


THERMAL PERFORMANCE

Thermal properties Gypsum Industries boards, ceiling tiles, and planks arerelatively lightweight materials and have low thermalcapacity. In conditions of intermittent heating, linings willwarm up quickly, providing early comfort conditions for theoccupants, and will help reduce the risk of harmful surfacecondensation.

Thermal insulationMoy insulation can be laid above the ceiling lining in some

systems to provide substantial levels of thermal insulation.

Timber floorsDuring the life of the building, gaps can occur round the

perimeter of suspended floors due to shrinkage of timber.

Air infiltration between the floor void and the room

through such gaps can contribute significantly to heat loss.

The designer should specify a method of restricting this air

movement, such as the provision of a flexible seal between

the floor and walls.

CONDENSATION CONTROL

Gyproc DUPLEX grade boards can be used as the lining where

the ceiling system is required to perform the function of a

vapour control layer. The application of two coats of

Gyproc Drywall Sealer after jointing provides additional

water vapour resistance.

Other precautions, such as cavity ventilation, may also be

necessary to reduce the risk of interstitial condensation.

SOUND INSULATION

Airborne sound insulation performance describes the

capability of the structure under test to reduce the levels of

sounds, such as speech or music, travelling between spaces.

Therefore, the higher the airborne sound insulation rating

the better the performance. The impact sound insulation

performance describes the resultant noise level in the room

below when the floor is impacted, for example, by

footsteps. Therefore the lower the impact sound insulation

rating the better the performance.

To achieve optimum sound insulation it is important that

the ceiling is made airtight. Most junctions can be sealed

using Gyproc jointing materials. Other small airpaths can be

treated using Gyproc Sealant.

Where Moy Isover insulation is specified in the cavity,

compression of the glass wool mat must be avoided by

ensuring that its thickness does not exceed the depth of the

cavity.

Conversion workThe sound insulation contribution of the existing floor will

play a significant part in the performance of the upgraded

construction. It is, therefore, important to optimise this by

sealing all gaps in and around the existing structure prior

to the installation of the new ceiling. Perimeters of floors

and ceilings can be sealed with Gyproc Sealant.

Gaps between floor boarding can be treated by fixing a

layer of hardboard on top. It is equally important to seal

the perimeter and joints of the new ceiling. Plasterboard

joints are sealed by the normal jointing techniques using

Gyproc Joint Tape and Gyproc jointing materials.

Perimeters can be treated in this manner but, if this is not

possible, Gyproc Sealant or a product from the Gyproc Cove

and Cornice range is recommended. Additional impact

sound insulation can be achieved by using a soft resilient

floor covering. Wherever possible, the ceiling to an existing

timber joist floor should be retained.

Introduction6.1

2 For current information, refer to www.gypsum.ie January 2009


Flanking transmissionAll quoted sound insulation figures were measured in the

laboratory in the absence of flanking transmission. It is

likely that on-site installation will be governed by flanking

transmission. This is particularly the case where support

walls are of lightweight masonry construction1 and a

weighted standardised level difference in excess of 50dB is

required for the floor. The use of timber joist or

lightweight concrete floors to meet Building Regulation

requirements with this type of associated structure may,

therefore, require the addition of some flanking

transmission control.

The use of timber joist sound resisting floors in timber

framed support structures (although again governed by

flanking transmission) generally results in performances in

keeping with the requirements of Building Regulations.

1 See BRE Digest 334 ‘Sound insulation of separating wallsand floors Part 2: Floors’.

Access to servicesThe Gyproc range of access panels has been purpose-

designed to give access to services in Gypsum Industries

access metal framed systems. They are available in a variety

of fire-rated and non fire-rated ceiling options. Refer to

section 8.4 - Gyproc Profilex Access Panels.

Introduction 6.1



INTRODUCTION

CasoLine MF concealed grid MF suspended ceiling system

is a monolithic suspended ceiling system suitable for most

internal dry lining applications. It is used in all types of

commercial and industrial buildings, including institutional

use areas such as schools and hospitals.

The system comprises a concealed metal framework

suspended from the structural soffit using strap hangers or

angle section. Gypframe Acoustic Hangers can be used to

suspend the grid from timber joists to maximise the degree

of acoustic isolation. Gyproc boards are screw-fixed to the

framework to form a ceiling lining with a seamless surface.

CasoLine MF provides a robust suspended ceiling able to

accept a degree of loading. The plenum is used to route

ducting and other services and can be accessed by

providing Gyproc Profilex access panels. Ventilation

openings and other services can also be accommodated.

Curved ceilings can be easily achieved using preformed

Gypframe MF7 support components.

CasoLine MFConcealed grid MF suspended ceiling system

6.2



Suspension from concrete soffitGypframe MF6 Perimeter Channel is fixed to the wall at

maximum 600mm centres, and Gypframe MF12 Soffit Cleats

secured to the soffit at 1200mm centres, using appropriate

fixings. Gypframe MF8 Strap Hanger or Gypframe GA1 Steel

Angles are pre-cut and secured to the soffit cleats with

Gypframe MF11 Nut and Bolt. Alternatively, the GA1 angles

can be fixed directly to the Soffit (see figure 10).

Gypframe MF7 Primary Support Channels are installed over

the Gypframe MF6 Perimeter Channels and secured to the

hangers. Gypframe MF5 Ceiling Sections are run at right

angles to the underside of primary channels to form the

secondary grid. The ceiling sections are secured to the

primary channels by Gypframe MF9 Connecting Clips.

Boards are fixed to the secondary grid to form single or

multi-layer linings as specified.

Suspension from timber joistsThe procedure is as for concrete except that soffit cleats are

not required – hangers are twice fixed directly to the side

of the joists.

Board fixingsBoard fixings for Gyproc, Glasroc F and Rigitone boards

should be at 150mm centres at perimeters, 230mm centres

within the field of the board.

Board fixings for Gyptone boards should be at 230mm

centres across perimeters and through the field of the board.

INSTALLATION

A special procedure is used for framing, fixing and

jointing Rigitone and Gyptone boards. Detailed installation

notes are given in the Installation Guide.


6.2


For full installation details, refer to the Installation Guide at www.gypsum.ie



6.2

6

Health and SafetySafety Data Sheets for all Gypsum Industries’ products

are available to download from our website

www.gypsum.ie, or via our Technical Sales Department.

EnvironmentalCasoLine MF is unsuitable for use in areas subject to

continuously damp or humid conditions.

Plasterboards are not suitable for use in temperatures

above 49ºC but can be subjected to freezing conditions

without risk of damage.

COMPONENTS

Table 1 Dimensions

Type of board Thickness Widthmm mm

...................................................................................................................Gyproc WallBoard1 12.5, 15 900, 1200Gyproc SoundBloc 12.5, 15 1200Gyproc FireLine1 12.5, 15 1200Glasroc F MultiBoard 6, 10, 12.5 1200Gyptone boards

LINE 6 12.5 1200QUATTRO 46 12.5 1200QUATTRO 47 12.5 1200QUATTRO 41 12.5 1200Curve LINE 7 6.5 900

...................................................................................................................1 also available in Duplex grades where vapour control is required

Rigitone boards

Table 2 Dimensions

Type of board Thickness Length Widthmm mm mm

...................................................................................................................

.8/18 12.5 1998 118810/23 12.5 2001 119615/30 12.5 2010 120012-20/66 12.5 1980 11888-15/20 12.5 2000 12008-15/20 SUPER 12.5 1960 1200....................................................................................................................




6.2

7

Gyproc Profilex access panels – for access to the plenumfor maintenance purposes.

Gyproc Drywall Screws – for fixing plasterboards.

Gypframe Wafer Head Drywall Screws – for metal tometal fixing. Note: consider using Wafer Head Gyproc Jack-Point Screwsfor MF8 to MF7 connection.

Gyproc Sealant – if required, sealing airpaths foroptimum sound insulation.

Moy Plus – providing acoustic/thermal insulation.

Gyproc jointing materials – for seamless jointing.

Rigitone installation tool – for installation of Rigitoneboards.

Rigitone Vario 60 – for jointing of Rigitone boards.

Rigitone jointing kit – for seamless jointing of Rigitoneboards.

Thistle GypPrime – for controlling suction on Rigitoneboard edges.

Gyproc Skimcoat, Carlite Finish or Gyproc BoardFinish – providing a plaster finish.

Gypframe metal sections

MF5 Ceiling Section - main support sectionPrime dimensions 80mm x 26mmGauge 0.5mm, length 3600mm

MF6A Perimeter Channel - perimeter support for MF5sPrime dimensions 20mm x 27mm x 30mmGauge 0.5mm, length 3600mm

MF7 Primary Support Channel - primary support for MF5sPrime dimensions 15mm x 45mmGauge 0.9mm, length 3600mm

MF8 Strap Hanger - suspension of ceiling gridPrime dimension 25mmGauge 0.55mm, length 25m (coil)orGA1 Steel AnglePrime dimensions 25mm x 25mmGauge 0.55mm, length 2900mmorGAH2 Acoustic Hanger Length 70mm

MF9 Connecting Clip - fixing MF5s to MF7Gauge 2.65mm

MF11 Nut and Bolt - joining hanger to soffit cleat

MF12 Soffit Cleat - suspension point from structural soffitPrime dimensions 27mm x 37mm x 25mmGauge 1.6mm

COMPONENTS (cont’d)

January 2009 For current information, refer to www.gypsum.ie


PERFORMANCE

Table 3 Dimensions, weights, and performance

Fire protection to steel beams1 supporting concrete floors

Ceiling boards Approx. MF5 MF7 Fire Performanceweight support support resistance2 substantiation

centres centres reportkg/m2 mm mm mins

..............................................................................................................................................................................................................................................Two layers of 12.5mm Gyproc WallBoard 21 450 1200 30 C100013..........................................................................................................................................................................................................One layer of 12.5mm Gyproc FireLine 14 450 1200 60 C100014

One layer of 12.5mm Gyproc MultiBoard 12 600 1200 60 G100036..........................................................................................................................................................................................................Two layers of 10mm Gyproc MultiBoard 20 400 1200 120 G100038

Two layers of 15mm Gyproc FireLine 28 450 900 120 C100015..............................................................................................................................................................................................................................................1 Concrete floors as described in BS 476: Part 23: 1987. The steel beams subjected to test had a section factor A/V (Hp/A) of 205m-1 calculated onthe basis of three sided profiled exposure. The suspended ceiling will also provide adequate protection to steel beams with a lower sectionfactor. For beams with a higher section factor, contact the Technical Sales Department for guidance.

2 Board joints must be reinforced with Gyproc Paper Joint Tape for the quoted fire resistance periods to be achieved. Please refer to sectionfor full details.

Refer to section 6.1 Introduction, for general considerations. In the following tables the fire resistance and sound

insulation performances are based on imperforate constructions using boards with all joints taped and filled according to

Gypsum Industries’ recommendations. Moy insulation may be laid over the back of the ceiling grid, and does not detract

from the fire performance of the floors. The quoted performances are achieved only if Gypsum Industries’ components are

used throughout, and the Company’s fixing recommendations are strictly observed.

Fire protection - timber floor construction

Ceiling boards Approx. Floor MF5 MF7 Fire Performanceweight type1 support support resistance2 substantiation

centres centres reportkg/m2 mm mm mins

..............................................................................................................................................................................................................................................One layer of 12.5mm Gyproc FireLine 14 a 450 1200 30 C106001

Two layers of 12.5mm Gyproc WallBoard 21 a 450 1200 30 C106002.........................................................................................................................................................................................................

Two layers of 12.5mm Gyproc FireLine 24 a 450 1200 60 C106003.........................................................................................................................................................................................................

Two layers of 15mm Gyproc FireLine 28 a 450 900 90 C106004.........................................................................................................................................................................................................

Three layers of 10mm Gyproc MultiBoard 30 c 450 1200 120 G106035..............................................................................................................................................................................................................................................1 Floor types

a Timber joist floors incorporating any structurally suitable wood board flooring on timber joists not less than 38mm wide at 600mm centres.

b 21mm minimum t & g wood board flooring on timber joists not less than 44mm wide at 600mm centres.c 21mm minimum t & g wood board flooring on timber joists not less than 38mm wide at 600mm centres.

2 Board joints must be reinforced with Gyproc Paper Joint Tape for the quoted fire resistance periods to be achieved. Please refer to sectionfor full details.


2.2

2.2


6.2




6.2

9


Fire protection to floor or roof cavity above suspended ceiling1

Ceiling boards Approx. Insulation Fire resistance2 Performanceweight integrity : insulation substantiationkg/m2 minutes report

..............................................................................................................................................................................................................................................Two layers of 22 100mm Moy 30 : 30 C10604512.5mm Gyproc WallBoard Plus Roll

laid over grid

.......................................................................................................................................................................................................

Two layers of 28 30mm rock mineral wool 60 : 60 C10605115mm Gyproc FireLine slab (45 kg/m3) laid over grid

..............................................................................................................................................................................................................................................1 Normal fixing centres for Gypframe MF5s and MF7s (450 and 1200mm respectively).2 Board joints must be reinforced with Gyproc Paper Joint Tape for the quoted fire resistance periods to be achieved. Please refer to sectionfor full details.

1 2


Detail Ceiling boards Approx. Laboratory sound insulation Performanceweight (100 - 3150Hz) substantiation

Airborne Impact reportkg/m2 Rw dB LnW dB

..............................................................................................................................................................................................................................................

One layer of 12.5mm Gyproc WallBoard 12 56 68 C100016

Two layers of 12.5mm Gyproc WallBoard 22 58 66 C100017

One layer of 12.5mm Gyproc SoundBloc 13 61 60 C100018

Two layers of 12.5mm Gyproc SoundBloc 24 64 57 C100019..............................................................................................................................................................................................................................................1 Basic floor construction is lightweight concrete joist floor with concrete infill panel (surface density of infill is 90kg/m3) and total depth150mm. sound insulation is Rw 35dB (airborne) and LnW 91dB (impact).2 Normal fixing centres for Gypframe MF5s and MF7s (450 and 1200mm respectively).

Upgrading of the sound insulation of concrete floors1

CasoLine MF ceiling2

hung underneath basic floorto give 240mm cavity

CasoLine MF ceiling2

hung underneath basic floorto give 240mm cavity, with 80mm

Moy Plus Roll in cavity

1

1

2

2



Sound insulation to timber floors1

195mm x 45mm timber joists at CasoLine MF ceiling hung600mm centres with 18mm t and g underneath 195mm x 45mm wood chipboard flooring and timber joists at 600mm centres basic ceiling3. to give a 277mm cavity.

80mm Moy Plus Roll laid on ceiling boards. Floating floor2.

CasoLine MF ceiling CasoLine MF ceiling CasoLine MF ceiling CasoLine MF ceilinghung underneath basic floor hung underneath basic floor hung underneath basic floor hung underneath basic floor

to give 150mm cavity. (ceiling removed) to (ceiling removed) with a (ceiling removed) using 80mm Moy Plus Roll give 277mm cavity. layer of Gyproc Plank fixed to Gypframe Acoustic Hangers

laid on ceiling boards. 80mm Moy Plus Roll the underside of the chipboard to give a 277mm cavity.laid on ceiling boards. to give a 258mm cavity. 80mm Moy Plus Roll

80mm Moy Plus Roll laid on ceiling boards.laid on ceiling boards.

Detail Ceiling boards3 Approx. Floor Fire Laboratory sound insulation Performanceweight depth resistance4 (100 - 3150Hz) substantiation

Airborne Impact reportkg/m2 mm Rw dB LnW dB

..............................................................................................................................................................................................................................................One layer of 12.5mm Gyproc Plasterboard 11 226 38 79 C106028

Two layers of 12.5mm Gyproc SoundBloc 24 376 30 66 50 C106011

One layer of 12.5mm Gyproc SoundBloc 13 389 30 58 66 C106005



One layer of 12.5mm Gyproc SoundBloc 13 307 30 59 62 C106008



Two layers of 15mm Gyproc SoundBloc 27 381 60 66 54 C106025

Two layers of 12.5mm Gyproc FireLine 24 320 60 59 61 C106003


Two layers of 12.5mm Gyproc FireLine 21 320 60 62 55 C106022


Two layers of 15mm Gyproc FireLine 28 325 90 59 61 C106004

Two layers of 15mm Gyproc FireLine 25 325 90 62 55 C106024..............................................................................................................................................................................................................................................1 Normal fixing centres for MF5s and MF7s (450 and 1200mm respectively).2 18mm t & g wood chipboard spot bonded to Gyproc Plank on Moy Sound Deadening Floor Slabs laid on 12mm plywood.3 If the basic ceiling comprises of lath & plaster it should be supported by chicken wire, securely nailed to the joists.4 Board joints must be reinforced with Gyproc Paper Joint Tape for the quoted fire resistance periods to be achieved. Please refer to sectionfor full details.


1

3 54

New floating floorBasic floor

2

Upgrading

6

1


6.2

10

2.2

3

3

5

5

6

4

4

4

4

2

6

6

6

2




6.2

11

GypWall / CasoLine MF ceiling

Suspended ceiling construction

Double layer Single layer Double layer Single layer12.5mm Gyproc 12.5mm Gyproc 12.5mm Gyproc 12.5mm GyprocSoundBloc. SoundBloc. SoundBloc. SoundBloc.80mm Moy Plus 80mm Moy PlusRoll on back. Roll on back.

Partition construction Weighted standardised level difference (DnTw)and performance substantiation report number.

..............................................................................................................................................................................................................................................146mm Gypframe metal studs at 600mm centres. 51 50 50 4825mm Moy Acoustic Roll in cavity. C10J001 C10J002 C10J003 C10J004One layer of Gyproc Plank and one layer of 12.5mm Gyproc SoundBloc each side.

146mm Gypframe metal studs at 600mm centres. 49 48 48 4525mm Moy Acoustic Roll in cavity. C10J005 C10J006 C10J007 C10J008Two layers of 12.5mm Gyproc SoundBloc each side.

70mm Gypframe metal studs at 600mm centres. 45 45 44 4525mm Moy Acoustic Roll in cavity. C10J009 C10J010 C10J011 C10J012Two layers of 12.5mm Gyproc SoundBloc each side...............................................................................................................................................................................................................................................Refer to section 3.2 GypWall for partition performance data based on laboratory tests.

Table 8 Sound insulation of composite constructions



Fire protectionFor reaction to fire classifications for Gyproc and Glasrocboards please refer to Section .

Fire resistanceThe fire resistances quoted are for imperforate ceilingstested to BS 476: Part 8: 1972, or BS 476: Parts 21 and 22:1987, or Part 23: 1987, or assessments based on these tests.

Sound insulationThe airborne and impact sound ratings quoted are forimperforate ceilings and have been tested in accordancewith BS EN ISO 140-3: 1995, and rated in accordance withBS EN ISO 717-1: 1997. The tests on ceiling/partitioncombinations in Table 8 were treated as site tests.

Airtightness is essential for optimum sound insulation. While most junctions will be sealed with standard jointingmaterials, gaps at the perimeter of the floor and ceiling,and other small airpaths, can be sealed using GyprocSealant. The sound insulation data quoted was measured inthe absence of flanking transmission. The performanceof the floor in practice will generally be governed byflanking transmission.

Gyptone and Rigitone boards are perforated and aredesigned to provide acoustic correction. Where soundinsulation room to room is required, sound attenuation(Dncw) of 39dB can be achieved with the inclusion of 100mmMoy Plus Roll over the back of the ceiling. Alternatively,other design considerations should be adopted such asextending adjoining partitions into the plenum void orinstalling a plenum barrier.

Sound absorptionGyptone and Rigitone boards provide sound absorptionwhen used in conjunction with an air space behind theceiling. Tests have been carried out to BS EN 20354: 1993and ISO 354: 1985. Increased levels of sound absorption canbe achieved by including insulation over the back of theceiling. For full details regarding the performance of theGyproc Ceilings Range, please refer to our Ceilings Guide.

Water vapour controlWhere there is a requirement for a vapour control layer,Duplex grade boards should be specified as the face layer(i.e. the second layer in double layer linings). Theapplication of two coats of Gyproc Drywall Sealer to theface lining will also provide vapour control.

Thermal propertiesMoy Isover insulation can be laid over the suspension gridto provide the required standard of thermal insulation.

DESIGN

Refer to section 6.1 Introduction, for general considerations.

Cavity barriersWhere cavity barriers are required, these can be formedusing Gyproc FireLine (limited combustability) or Glasroc FMultiBoard (non-combustible) screw-fixed to a simplemetal or timber frame. The framing should be fixed to thestructure to avoid undue loading of the ceiling suspensiongrid or, alternatively, additional hangers should beincorporated to support the ceiling alongside the cavitybarrier. Refer to section 6.7 Cavity barriers.

Ceiling lift The Designer should give consideration to designing in a‘pressure relief’ to minimise the risk of ceiling ‘lift’ in roomswith no permanent ventilation. Ceiling lift may arise whereopening a door in a virtually leak proof room causes thelightest element in the room, i.e. normally the ceiling, to lift,creating a noise. Making efforts to improve air tightness inbuildings may increase instances of ceiling lift. Whilst thismay be annoying to the occupier, it has no detrimental effecton the performance claimed for the ceiling, but designingout by incorporating permanent ventilation in the roomwould be desirable. Vents in the door or ceiling mightbe suitable.

Suspension – Gyproc and Gyptone linings Fixing points for suspending the metal grid are required at1200mm centres in each direction. Suitable fixing devices,e.g. Rawl Hammer In Fixing, should be employed whenfixing to the structure. These should be non-combustible,e.g. Rawl Rawlok Sleeve Anchor, when the ceiling isrequired to provide fire protection. The ceiling grid can besuspended from a concrete soffit using Gypframe MF12Soffit Cleats and Gypframe MF8 Strap Hanger, oralternatively, Gypframe GA1 Steel Angle. The latter providesa more robust suspension support which restricts any flexingof the lining when pressure is applied from below.Gypframe GA1 Steel Angle is thus the preferred suspensionoption when a plaster finish is specified to Gyproc boards.

If Gypframe GA1 Steel Angle is used it can, if preferred, befixed directly to the soffit rather than via MF12 Soffit Cleats.The angle is cut and bent to fit as shown in Fig 10. Forsingle layer boarding, where GA1 Steel Angle is fixed direct,the MF7 Primary Support Channel and GA1 Steel Angles arefixed at 1200mm centres. For typical double layer ceilingsthe GA1 Steel Angles are fixed at max. 1200mm centres,but the MF7s are closed down to 900mm max. centres.

Gypframe Acoustic Hangers can be used to suspend thegrid from timber joists to maximise the degree of acousticisolation (see Fig 12). In a comparative test a 3dBimprovement in airborne sound insulation and a 6dBimprovement in impact sound insulation were achieved.Refer to Table 7, Constructions 4 and 6 , relating todouble layer Gyproc SoundBloc linings.

2.1


6.2




6.2

13

With concrete floors the high mass of the constructionmeans that high levels of acoustic performance can beachieved when the CasoLine MF ceiling is suspended byconventional means i.e. strap hangers or angle section.

Suspension – Rigitone linings The Gypframe MF7 Primary Support Channels are fixed at1000mm centres. Suspension points to the structure for theMF7’s are required at 900mm centres. Suitable Rawl fixingdevices should be employed when fixing to the structure.The ceiling grid can be suspended from a concrete soffitusing Gypframe MF12 Soffit Cleats and Gypframe MF8Strap Hanger, or alternatively, Gypframe GA1 Steel Angle.

Suspension of CasoLine MF from engineered I joistsPlease contact the joist manufacturer for advice.

Partition to suspended ceiling junctionTests on lightweight constructions have revealed thefollowing:–

1. In situations where a GypWall metal stud partition,which must be securely fixed to the structure, penetratesCasoLine MF, the structural performance of the partitioncan be based on the floor to suspended ceiling heightirrespective of the construction. Therefore, lightweightpartitions which are required for space division in tallstorey heights will be significantly strengthened by theceiling system. Where CasoLine MF is installed on one sideof the partition, only a slight loss of flexural strength willoccur when any loading is applied on the ceiling side of thepartition.

2. The structural performance of a GypWall metal studpartition fixed to the framework of a CasoLine MF ceiling,or to noggings cut from Gypframe MF5 Ceiling Section setat 600mm centres, is equal to the performance of a metalstud partition of the same height fixed direct to thestructural soffit.

Imposed loadsTables 9, 10 and 11 provide loading data for the suspensiongrid for Gyproc, Gyptone and Rigitone boards respectively,based on a limiting deflection factor of L/400.

Table 9 Maximum recommended loads on

CasoLine MF grid1 with Gyproc linings

Suspension point MF7 Maximum load including

centres channel weight of board and insulation*

centres

mm mm kg/m2

....................................................................................................................

1200 1200 30

1200 900 40

1200 600 60

900 1200 35

....................................................................................................................1 MF5 Ceiling Sections spaced at 450mm centres (maximum).


CasoLine MF grid with Gyptone linings

Suspension MF7 Maximum load including point channel board and any insulation.*centres centres MF5s at 600mm centres mm mm kg/m2

....................................................................................................................1200 1200 251200 900 351200 600 55....................................................................................................................


CasoLine MF grid with Rigitone linings

Suspension MF7 Maximum load including point channel board and any insulation.*centres centres MF5s at nominal 330mm centresmm mm kg/m2

....................................................................................................................900 1000 30....................................................................................................................

* Maximum loads should be reduced by 25% if GypframeGA1 Steel Angles are fixed directly to the soffit.

ServicesThe plenum can be used to route all service requirementsincluding ducting, pipework, electrical cables and conduit.Where lighting fittings, Gyproc Profilex access panels andsimilar components are incorporated as part of the designrequirements, consideration must be given to maintainingthe integrity of the ceiling to meet fire resistance andsound insulation requirements. Where Gyproc access panelsare required they can be installed as shown in Fig 4. Refer to section 8.4 - Gyproc Profilex Access Panels.

The installation of services should be in accordance with allavailable standards, guidelines and recommendations.



Fixtures / Fixings

Fixings to the system should always be made into the metalgrid or to supplementary framing. Some adjustment of theprimary grid may be required to support particularly heavyloads, see Tables 9, 10 and 11. Where loads outside thisrange are anticipated, independent suspension should beprovided from the structure.

Control jointsGyproc Control Joints may be required in the ceiling torelieve stresses induced by expansion and contraction of thestructure. The location of the control joints is at thediscretion of the specifier. It is recommended that theycoincide with movement joints within the surroundingstructure.

Rigitone expansion jointsRigitone boards should be cut 10mm short of the perimeterwall and should not be fixed to the perimeter channel, seeFigs 7 and 8. Expansion joints should be included in theceiling, one 10mm expansion joint should be included every10m of ceiling in each direction, and where there is anexpansion joint within the surrounding structure.

FinishingRefer to section 1.5 Finishing Coat Plasters, section 2.2Jointing, and section 2.4 Decorative effects.

Additional care and attention should be exercised whenjointing Gyptone and Rigitone boards so as not to fill theperforations and impair the acoustic performance of thefinished ceiling.

Estimating – Gyproc / Gyptone liningsThe estimated construction time is 1.5m2 / man hour (singlelayer ceiling) or 1m2 / hour (double layer ceiling) ready forfinishing.

Estimating – Rigitone liningsThe estimated construction time is 0.75m2 / man hour readyfor decoration.

CONSTRUCTION DETAILS

Fig 1 Typical layout for plasterboard

1200mm

1200mm150mm

maximumcentres

230mmmaximum

centres

450mm


6.2




6.2

15

Fig 2 Typical layout for Gyptone board (LINE 6 – 2400 x 1200mm board illustrated)

1200mm

1200mm

600mm

CONSTRUCTION DETAILS CONT’D

Fig 3 Typical layout for Rigitone board

1000mm max. 1000mm 1000mm

A A

B

B

900m

m90

0mm

330

no

m33

0n

om

330

no

m33

0n

om

330

no

m33

0n

om

150

max

.

See Fig 7

See Fig 8



Fig 5 Perimeter arrangement – Gypframe MF5Ceiling Section

Fig 6 Perimeter arrangement – Gypframe MF7Primary Support Channel

Fig 4 Gyproc Profilex access panel installation

Fig 7 Perimeter arrangement – Rigitone boards Fig 8 Perimeter arrangement – Rigitone boards

1000mmmax.

150mmSection AA of Figure 3.

Section BB of Figure 3.


6.2




6.2

17

Fig 11 Bulkhead

Fig 13 Change of level

Fig 12 Suspension from timber joists usingGypframe Acoustic Hangers

Fig 10 Pre-forming Gypframe GA1 Steel Angle fordirect fixing to the structure. Note: Please refer toTables 11 to 13.

Fig 9 Clip fixing of Gypframe MF5 Ceiling Section.Note: Please refer to DESIGN: Imposed loads on p15.

MF12

MF8

MF7

MF9

MF5

Gypframe Acoustic Hanger

MF11

35m

m

M6nut/bolt/washers

(by others)



GypLyner ceiling is a general purpose ceiling lining system

suitable for most internal applications. It is used in all

types of buildings from residential properties to large

commercial developments, and is equally suited to both

new-build and refurbishment. The system caters for

bulkheads and novel design details and fully complements

GypLyner wall lining.

The ceiling is based on an independent metal framework

comprising channel sections friction fitted to a track at the

perimeter. The channel sections are fixed back to the

background with support brackets or connectors. The

framing assembly is clad with Gyproc boards. The lining is

jointed to achieve a seamless surface suitable to receive

most decorative finishes.

GypLyner ceiling is easy to handle and simple to

construct. By maintaining a cavity to the background, it

readily facilitates the inclusion of services. The framework

can be used with all types of background and the

stand-offs which can be achieved enable background

irregularities to be corrected. Generally no preparation

work is required.

INTRODUCTION

18

GypLyner™

Concealed grid ceiling lining system6.3



19

GypLyner™


Fixing to a concrete soffitGypframe GL8 Track is fixed at the perimeter with the

longer leg at the bottom. Gypframe GL2, GL9 or GL12

Brackets are fixed at the required centres. Gypframe GL1

Lining Channel is located into the perimeter track and each

leg of the GL2, GL9 or GL12 Bracket is screw-fixed to the

Gypframe GL1 Lining Channel. The protruding legs of each

bracket are bent to sit back from the channel face.

Gypframe GL1 Lining Channel sections are joined using

Gypframe GL3 Channel Connectors.

Additional channel or supplementary framing is installed if

required to support fixtures. Boards are fixed to the

Gypframe GL1 Lining Channels to form one or two layer

linings as specified.

Fixing to timber joistsGypframe GL5 or GL6 Timber Connectors are fixed to the

side of joists using Gyproc Drywall Screws. The connectors

must be aligned accurately since they can not be adjusted

once Gypframe GL1 Lining Channel is engaged into a row

of timber connectors and twisted into position. The

channels are located into Gypframe GL8 Track at the

perimeter. Gypframe GL1 Lining Channel sections are

joined using Gypframe GL3 Channel Connectors.

Additional channel or supplementary framing is installed if

required to support fixtures. Boards are fixed to the

Gypframe GL1 Lining Channels to form one or two layer

linings as specified.

If the existing ceiling is to be retained, Gypframe GL2, GL9

or GL12 Brackets are fixed to joists through the retained

ceiling with suitable fixings. Gypframe GL1 Lining Channels

and boards are fixed to form the new ceiling.

INSTALLATION





GL1 Lining Channel in 2400, 2700, 3000 and

3600mm lengths. Prime dimensions are

45mm x 18mm

GL3 Channel Connector – for joining

GL1 channels

GL2 Fixing Bracket – fixing to structure

Maximum stand-off 75mm





GL5 Timber Connector

Length: 70mm

GL6 Timber Connector

Length: 170mm

GL8 Track, 3600mm length

Prime dimensions are 30mm x 20mm x 20mm

Gypframe Wafer Head Drywall Screws – fixing the

brackets to GL1.

Gypframe GL11 GypLyner Anchors – fixing the brackets

to concrete / masonry.

Gyproc Drywall Timber Screws – for fixing brackets to

timber supports.

Gyproc Drywall Screws – fixing plasterboards to metal

framing.

Gyproc Sealant – if required, sealing airpaths for

optimum sound insulation.

Gyproc jointing materials – for a seamless finish.

Gyproc Skimcoat, Carlite Finish or Gyproc BoardFinish – to provide a plaster finish.

Moy Plus Roll and Moy Acoustic Roll

Moy Sound Deadening Floor Slabs

COMPONENTS

Health and SafetySafety Data Sheets for all Gypsum Industries’ products areavailable to download from our website: www.gypsum.ie,or via the Technical Sales Department.

EnvironmentalGypLyner is unsuitable for use in areas subject to





Gyproc plasterboards

Table 1 - Dimensions


1 1200mm wide boards also available in Duplex Grade wherevapour control is required.

Gyproc FireLine1 12.5, 15 1200

Gyproc WallBoard 12.5, 15 900, 12001

Glasroc F MultiBoard 12.5 1200

Gyproc SoundBloc 12.5, 15 1200

20

GypLyner™




PERFORMANCE

Please refer to section - Introduction - for general considerations.6.1

Table 2 - Dimensions and performance1 - upgrading

1

32 4 5

Existing basic floor (18mm T&G flooring grade chipboard) and ceiling

18mm T&G chipboard andexisting ceiling of 9.5mm

Gyproc WallBoard. GypLynerceiling2 hung underneath to

give a cavity minimum of 50mmto a maximum of 145mm.50mm Moy Acoustic Roll

in the cavity.

Existing floor and ceiling retained Existing floor retained

18mm T&G chipboard and aceiling of Gyproc Plank and

12.5mm Gyproc WallBoard tosimulate a wood lath and plasterceiling3. GypLyner ceiling2 hung

underneath to give a cavityminimum of 50mm to a

maximum of 145mm. 50mmMoy Acoustic Roll in the cavity.

Existing 18mm T&G chipboardretained. Existing wood lathand plaster ceiling removed

(old nails can be left in positionon the underside of joists).100mm Moy Plus Roll in thecavity with GypLyner ceiling

hung underneath.

Existing 22mm T&G flooringgrade chipboard retained.

GypLyner ceiling hungunderneath with GL1 LiningChannels at 600mm centres.

Detail Ceiling boards Joist Joist Fire Laboratory sound insulation Performancecentres size resistance4 (100 - 3150Hz) substantiation

Airborne Impact reportmm mm mins Rw dB Lnw dB

Existing layer of 9.5mm Gyproc Plasterboard 450 195 x 47 – 37 80 C1540011

Two layers of 12.5mm Gyproc SoundBloc 450 200 x 50 30 57 61 C154002

One layer of 12.5mm Gyproc FireLine 450 195 x 45 30 53 64 C154003


3

2

4

Two layers of 12.5mm Gyproc FireLine 450 195 x 45 60 56 62 C154005



Inner layer of Gyproc Plank and an outer 600 195 x 45 60 52 66 C206004layer of 12.5mm Gyproc WallBoard

One layer of 12.5mm Gyproc MultiBoard 600 200 x 44 60 – – G106030

3

2

4

5

Two layers of 12.5mm Gyproc MultiBoard 600 200 x 50 90 – – G1060335

1 The fire resistance and sound insulation performances are for imperforate ceilings with all joints taped and filled inaccordance with Gypsum Industries’ recommendations. The quoted performances are achieved only if Gypsum Industriescomponents are used throughout, and the Company’s fixing recommendations are strictly adhered to. Any variation in thespecification should be checked with Gypsum Industries.2 Gypframe GL6 Timber Connectors are bent at a position between the third and fourth holes along (forming a 30mmhorizontal leg) to form a right angle, and fixed through the existing ceiling with suitable fixings.3 Existing lath and plaster ceiling (up to 20mm thick) should be supported by chicken wire, securely nailed to the joists.4 Board joints must be reinforced with Gyproc Paper Joint Tape for the quoted fire resistance periods to be achieved. Pleaserefer to section for full details.

4

2.2

21

GypLyner™




Table 3 - Dimensions and performance1 - upgrading to compartment / separating floor standard

Existing basic floor (21mm softwood) and ceiling Floor boarding lifted and replaced, existing ceiling removed

Detail Ceiling boards Joist Joist Fire Laboratory sound insulation Performancecentres size resistance3 (100 - 3150Hz) substantiation

Airborne Impact reportmm mm mins Rw dB Lnw dB

1 32

GypFloor SILENT comprising of21mm softwood floor boardingwith Gyproc Plank on Gypframe

SIF Floor Channels. 100mmMoy Plus Roll in the cavity with

GypLyner ceiling hungunderneath (old nails may be

left in position on theunderside of joists).

Platform floor2 GypLynerceiling hung underneath timber

joists to give a 277mm cavity,with 100mm Moy Plus Roll

between the joists.

1 The fire resistance and sound insulation performances are for imperforate ceilings incorporating tapered edge boards withall joints taped and filled according to Gypsum Industries’ recommendations. The quoted performances are achieved only ifGypsum Industries’ components are used throughout, and the Company’s fixing recommendations are strictly adhered to. Any variation in the specification should be checked with Gypsum Industries.2 Platform floor comprising of a walking surface of 18mm T&G wood board flooring, spot-bonded with Gyproc Sealant at300mm centres to a substrate of Gyproc Plank laid on 25mm Moy Sound Deadening Floor Slabs (64kg/m3) on minimum 12mmwood based sheet sub-deck, nailed to joists.3 Board joints must be reinforced with Gyproc Paper Joint Tape for the quoted fire resistance periods to be achieved. Pleaserefer to section for full details.

One layer of 12.5mm Gyproc plasterboard 450 195 x 45 30 (modified) 36 82 C1540111


Inner layer of Gyproc Plank and an outer 450 200 x 50 60 63 55 C154008layer of 12.5mm Gyproc SoundBloc

3

2

2.2

22

GypLyner™




Please refer to section - Introduction - for general

considerations.

Planning - key factorsThe depth of the ceiling cavity is determined by the

positioning of the fixing brackets. For concrete soffits the

fixing brackets allow sufficient adjustment for levelling the

ceiling. Allow for a stand-off of 25mm - 75mm plus the

lining thickness when using Gypframe GL2 Brackets, 25mm -

125mm plus lining thickness when using Gypframe GL9

Brackets and 25mm-175mm plus the lining thickness when

using GL12 Brackets. When fixing to timber joists using

Gypframe GL5 or Gypframe GL6 Timber Connectors, allow for

a maximum cavity depth of 35mm and 120mm respectively

measured from the bottom of the joists to the underside of

the GL1.

Cavity barriersWhere cavity barriers are required these can be formed

using Gyproc FireLine (limited combustibility) or Gyproc

MultiBoard (non-combustible) screw-fixed to a simple

metal frame. The framing should be fixed to the structure

to avoid undue loading of the ceiling suspension system.

Please refer to section - Cavity barriers.

Fixing to the structureWhen lining concrete soffits, Gypframe brackets should be

positioned equidistant at up to 1200mm maximum centres.

Gypframe GypLyner Anchors are suitable for fixing brackets

to solid concrete or masonry backgrounds. The safe

working load is 350N per fixing, tested in concrete of

characteristic strength of 30 N/mm2. When fixing to hollow

backgrounds proprietary fixings will be necessary.

When lining timber joists, Gypframe timber connectors

should be fixed to the joists to support the channels at

max. 1200mm centres. When lining engineered timber I

joists, please contact the joist manufacturer for advice.

ServicesThe cavity above the metal framework facilitates the

incorporation of services. Pipes and conduits should be

fixed in position before installing the framing. Where

lighting fittings, Gyproc Profilex Access Panels and similar

components are incorporated as part of the design

requirements, consideration must be given to maintaining

the integrity of the ceiling to meet fire resistance and

sound insulation requirements.

The installation of services should be in accordance with all

available standards, guidelines and recommendations.

FixturesFixings to the system should always be made into the

channels or to supplementary framing.

DESIGNFire protectionFor reaction to fire classifications for Gyproc and Glasrocboards please refer to Section .

Fire resistanceThe fire resistances given in Tables 2 - 3 are for imperforate

ceilings tested to BS 476: Part 8: 1972, or

BS 476: Part 21: 1987, or assessments based on these tests.

Sound insulationThe airborne and impact sound ratings given in Tables 2 - 3

are for imperforate ceilings and have been tested in

accordance with BS EN ISO 140-3 :1995, and rated in

accordance with BS EN ISO 717-1: 1997.

Airtightness is essential for optimum sound insulation.

While most junctions will be sealed with standard jointing

materials, gaps at the perimeter of the floor and ceiling,

and other small airpaths, can be sealed using Gyproc

Sealant.

The sound insulation data quoted was measured in the

absence of flanking transmission. The performance of the

floor in practice will generally be governed by flanking

transmission.

Thermal propertiesMoy Isover insulation can be laid over the suspension grid

to provide increased thermal insulation.

6.1

6.7

2.1

23

GypLyner™




Control jointsGyproc Control Joints may be required in the ceiling to

relieve stresses induced by expansion and contraction of

the structure. The location of the control joints is at the

discretion of the specifier. It is recommended that they

coincide with movement joints within the structure.

FinishingPlease refer to section - Finishing Coat Plasters,

section - Jointing, and section - Decorative

Effects.

EstimatingThe estimated construction time is 3m2 / hour (single layer

ceiling) or 2 - 2.5m2 / hour (double layer ceiling) ready for

finishing.

1.5

2.2 2.4


Fig 1 - Connection to timber joists using a Gypframe GL5

Timber Connector (one hole between screw fixings into

the joists).

Fig 2 - Connection to timber joists using a Gypframe GL6

Timber Connector (two holes between screw fixings into

the joists).

24

GypLyner™




CONSTRUCTION DETAILS - CONTINUED

Fig 3 - Typical layout (12.5mm board on 450mm GL1 centres)

Fig 4 - Typical layout (15mm board on 600mm GL1 centres)

25

GypLyner™




INTRODUCTION

GypFloor SILENT is a sound insulating floor system

designed for use in the residential sector. It is specified in

conversion or improvement work to upgrade an existing

timber joist floor to meet the acoustic requirements of

national Building Regulations. It is also used in new-build

to improve the internal environment by reducing sound

transmission through upper floors.

The system employs SIF Floor Channels with integral

resilient strips which are fitted over the top of floor joists.

Gyproc Plank is cut and fitted between the joists with the

cut ends resting on the channel flanges. Moy Plus Roll is

laid between the joists to rest on Gypframe Resilient Bars

which are fixed to the underside of the joists. Gyproc

boards are screw-fixed to the resilient bars to form the

ceiling. The floor is completed by screw-fixing floor

boarding through Gyproc Plank into one flange of the

metal channel section.

GypFloor SILENT provides a resiliently mounted floor layer

and ceiling lining. Mass and sound absorption are

provided within the floor zone which minimises the

thickness of the floor. The system is simple and economic

to install and access to services is easy where traditional

square edge floor boarding is used.

26

GypFloor SILENTSound insulating floor system

6.4



27


6.4

Floor system installationFor joists 63mm or less, Gypframe SIF1 Floor Channel is

located centrally over the joists, leaving a 6mm clearance

gap at walls. Where joints in channel sections occur, sections

are butted together. Where joists run within 30mm of the

wall, Gypframe SIF2 Floor Channel is located in place of

Gypframe SIF1 Floor Channel. Gyproc Plank is cut to a neat

(not tight) fit between channels. Flooring is laid across the

channels and screw-fixed through the Gyproc Plank to the

channel flange on one side only, using Gypframe SIF5 Floor

Screws. It is important to ensure that no fixings are allowed

to connect the Gypframe floor channels to the joists.

When fixing to joists 64mm - 75mm in width, Gypframe

SIF4 Floor Channel is used in place of Gypframe SIF1 Floor

Channel. For joists over 75mm width, two Gypframe SIF2

Floor Channels (suitably overlapped) are installed.

Ceiling fixingGypframe RB1 Resilient Bars are fixed through their base

flange to each joist using Gyproc Drywall Screws. Resilient

bar noggings are fixed at perimeters. Moy Isover insulation

is laid between joists to rest on the resilient bars. Base layer

boards are fixed to resilient bars with their long edges at

right angles to the resilient bars. Face layer boards are fixed

through to all resilient bars. Select an appropriate screw

length to ensure that screws do not contact the joists.

INSTALLATION





6.4

28


EnvironmentalGypFloor SILENT is unsuitable for use in areas subject to





COMPONENTS

Gyproc plasterboards



SoundBloc 12.5, 15 1200

FireLine 15 1200

Plank 19 600


SIF1 Floor Channel

Width Length

127mm 2000mm

SIF2 Floor Channel

Width Length

85mm 2000mm

SIF4 Floor Channel

Width Length

140mm 2000mm

RB1 Resilient Bar

Depth Length

16mm 3000mm

Gypframe SIF Floor Screws – 55mm long for fixing

floorboards through Gyproc Plank into the SIF floor

channel flange.

Gyproc Drywall Timber Screws – for fixing brackets to

timber supports.

Gyproc Drywall Screws – fixing boards to metal framing.




Gyproc Skimcoat, Carlite Finish or Gyproc BoardFinish – to provide a plaster finish.




6.4

29

PERFORMANCE

Please refer to section - Introduction - for general considerations.6.1

Table 2 - Dimensions and performance1

1

Existing basic floor and ceiling

Detail Ceiling boards Fire Laboratory sound insulation Performanceresistance4 (100 - 3150Hz) substantiation

Airborne Impact reportmins Rw dB Lnw dB

Existing floor comprising 195mm x

45mm timber joists at 450mm centres

with 21mm softwood floor boarding.

Floor boarding lifted and replaced. Existing ceiling removed UPGRADING2

Floor boarding lifted and replaced. Existing ceiling retained

32 4 5

GypFloor SILENT

Comprising of 21mm softwood

floor boarding with Gyproc

Plank on Gypframe SIF Floor

Channels. 100mm Moy Plus

Roll in the cavity. Resilient

bars at 450mm centres. Ceiling

boards as below.

GypFloor SILENT

Comprising of 21mm softwood floor

boarding with Gyproc Plank on

Gypframe SIF Floor Channels.

100mm Moy Plus Roll

in the cavity. GypLyner ceiling

framework to joists (old nails may be

left in position on underside of

joists). Ceiling boards as below

GypFloor SILENT

Comprising of 21mm T&G floor boarding

(or 20mm square edge boarding topped

with 3mm hardboard) with Gyproc Plank

on Gypframe SIF Floor Channels. Cavity

bridged between joists2 by 12.5mm

Glasroc F MultiBoard resting on 100mm x

12.5mm Glasroc F MultiBoard strips screw-

fixed to each joist flush with bottom edge

at 300mm centres. 100mm Moy Plus Roll

in the cavity. Ceiling boards as below.

GypFloor SILENT

Comprising of 21mm floor

boarding with Gyproc Plank

on Gypframe SIF Floor

Channels. 100mm Moy Plus

Roll in the cavity. Ceiling

boards as below.

Existing layer of 12.5mm Gyproc plasterboard 30 (modified) 36 82 C014036

Simulated lath and plaster ceiling (one layer of Gyproc Plank 30 (modified) 40 76 C014037and one layer of 12.5mm Gyproc plasterboard)3

Simulated lath and plaster ceiling (one layer of Gyproc Plank 30 54 63 C204004and one layer of 12.5mm Gyproc plasterboard)3

Existing 12.5mm plasterboard ceiling overboarded with one 30 54 63 C204005layer of 12.5mm Gyproc SoundBloc

Two layers 15mm Gyproc SoundBloc 60 61 56 C204006

Inner layer of Gyproc Plank, outer layer of 12.5mm Gyproc SoundBloc 60 63 55 C204001

Inner layer of Gyproc Plank, outer layer of 12.5mm Gyproc SoundBloc 60 63 55 C154008

Simulated lath and plaster ceiling (one layer of Gyproc Plank 60 54 63 G104032and one layer of 12.5mm Gyproc plasterboard)3

Existing 12.5mm plasterboard ceiling overboarded with one 60 54 63 C204007layer of 15mm Gyproc FireLine

Two layers of 15mm Gyproc FireLine 90 60 57 C204002

1 The fire resistance and sound insulation performances are for imperforate ceilings with all joints taped and filled in accordance with GypsumIndustries’ recommendations. The quoted performances are achieved only if Gypsum Industries’ components are used throughout, and theCompany’s fixing recommendations are strictly adhered to. Any variation in the specification should be checked with Gypsum Industries.2 Minimum 50mm width.3 Linings to simulate a lath and plaster ceiling in good condition.4 Board joints must be reinforced with Gyproc Paper Joint Tape for the quoted fire resistance periods to be achieved. Please refer to sectionfor full details.

3

2

4

5

1

1

5

5

2

2

2.2



Fire protectionFor reaction to fire classifications for Gyproc and Glasrocboards please refer to Section .

Fire resistanceThe fire resistances given in Table 2 are for imperforateceilings tested to BS 476: Part 8: 1972, or BS 476: Part 21: 1987, or assessments based on these tests.

Sound insulationThe airborne and impact sound ratings given in Table 2 arefor imperforate ceilings and have been tested inaccordance with BS EN ISO 140-3: 1995, and rated inaccordance with BS EN ISO 717-1: 1997.

Airtightness is essential for optimum sound insulation.While most junctions will be sealed with standard jointingmaterials, gaps at the perimeter of the floor and ceiling,and other small airpaths, can be sealed using GyprocSealant.

The sound insulation data quoted was measured in theabsence of flanking transmission. The performance of thefloor in practice will generally be governed by flankingtransmission.

Site measurements on GypFloor SILENT installed betweenflats have indicated that the level of sound insulationexpected from separating floors and their surroundingstructure can be achieved. For site measurement data,please contact the Technical Sales Department.

Planning - key factorsThe system will add 7mm to the level of the top of thejoists. The finished surface of the applied ceiling liningswill be 48mm from the underside of the joists whenGypframe RB1 Resilient Bar and a layer of Gyproc Plankplus 12.5mm SoundBloc are applied. When two layers of15mm board are specified that dimension will be 46mm.Ceiling linings should be fixed prior to any installation ofdry lining or plastering on walls. If this is not possible,ceiling linings should properly butt against the wallsurface. In refurbishment work the level of existing joistsshould be checked. If there is misalignment, considerationshould be given to using a GypLyner or CasoLine MF

suspended ceiling to support the ceiling boards, and theyshould be level and straight for the flooring applications.

Structural1

The system is primarily intended for timber floors with anintensity of distributed load of up to 5.0kN/m2, and aconcentrated load of 4.5kN. An increase in the mass of thefloor will result from upgrading. The load capacity of thesupporting floor joists should therefore be checked, withdue consideration to the effects of lateral buckling and theneed for intermediate restraints. This may be particularlyimportant where the system is to be used in conjunctionwith engineered timber ‘I’ joists.

Engineered Timber I JoistsPlease contact the joist manufacturer for advice.

ServicesThe installation of services within the floor zone should becarried out so as to allow easy access from above andshould, where possible, follow the line of the floor joists.The use of square edge flooring will allow easy access toservices.

Services should be installed in accordance with all availablestandards, guidelines and recommendations.

FinishingPlease refer to section - Finishing Coat Plasters, section

- Jointing and section - Decorative effects.

EstimatingThe estimated construction time is 0.5m2 / hour ready forfinishing.

1 Gypsum Industries acknowledges the help of TJM Europe inpreparing this statement.

DESIGN

Please refer to section - Introduction - for general

considerations.

6.1

1.52.2 2.4

2.1

30


6.4



31


6.4

Fig 1 - Cut-away floor plan (chipboard flooring)


Fig 2 - Cut-away ceiling plan (12.5mm x 1200mm x 2700mm Gyproc SoundBloc over Gyproc Plank fixed to

Gypframe RB1 Resilient Bars)

450mm



Fig 3 - Typical section through floor

Fig 4 - Section through floor - joist width over 75mm Fig 5 - Perimeter junction

Fig 6 - Typical hearth construction floor boarding plugged

and screwed through packer into concrete

Fig 7 - Non-loadbearing partition (space division) sited

over joists

32


6.4



33

Notes



Timber joists ceilings and separating / compartment floors6.5


INTRODUCTION

Ceilings to timber joist floors are an established form of

ceiling construction, which is widely used in both new

housing and refurbishment. Separating / compartment

floors are often specified as fire and sound resisting floors

in residential units such as flats and apartments to meet

the requirements of national Building Regulations.

The ceilings comprise one or two layers of Gyproc

plasterboard screw-fixed or nailed to traditional timber

joist supports. Moy glass mineral wool insulation can be

included in the floor cavity to improve acoustic

performance.

Timber joist ceiling linings are quick and easy to install,

and provide a lining which can be jointed to give a

seamless finish ready for direct decoration or a traditional

gypsum plaster finish.


Timber joists ceilings and separating / compartment floors 6.5


Direct fix plasterboard ceilingBoards are fixed to ceilings, prior to lining walls and

partitions, with the long edges at right angles to the joists.

Cut-ends are located over a joist or timber nogging

support. Timber noggings (where required) are fitted

between joists at room perimeters to support board edges.

Noggings may also be required to support board edges in

the field of the boards. Boards are preferably fixed to

timber supports using Gyproc Drywall Timber Screws, to

minimise fixing defects.

Indirect fix to Gypframe RB1 Resilient BarsThe bars are fixed through the single fixing flange to the

underside of timber joists (at 90° to them) using Gyproc

Drywall Screws. The first and last rows of Gypframe RB1

Resilient Bars are located at all wall perimeters. Boards are

fixed to the underside of Gypframe Resilient Bars with long

board edges at right angles to the bars. When fixing

boards, care must be taken to ensure that the plasterboard

fixing screws do not make contact with the joists.

INSTALLATION



36

Timber joist ceilings and separating / compartment floors6.5


EnvironmentalGyproc plasterboard ceilings are unsuitable for use in areas

subject to continuously damp or humid conditions.




COMPONENTS

Gyproc and Glasroc plasterboards



Gyproc WallBoard1 9.5, 12.5, 900, 120015mm 1200

Gyproc SoundBloc 12.5, 15 1200

Gyproc FireLine1 12.5, 15 1200

Gyproc Moisture Resistant 12.5, 15 1200

Gyproc Plank 19 600

Glasroc F MultiBoard 6, 10, 12.5 1200

Glasroc F FireCase S 15, 20 600, 120025, 30 1200

1 1200mm wide boards also available in DUPLEX grades if vapourcontrol is required.


RB1 Resilient Bar - Length

providing acoustic 3000mm

isolation.

Gyproc Drywall Timber Screws , Glasroc FireCaseScrews or Gyproc Nails – fixing plasterboards to timber

framing.

Gyproc Drywall Screws – fixing plasterboards to metal

framing and timber.




Gproc Skimcoat, Carlite Finish or Gyproc Board Finish –

to provide a plaster finish.

Moy Acoustic Partition Rollor

Moy Plus Roll

Rock mineral wool (by others)



37



PERFORMANCE

Please refer to section Introduction - for general considerations.6.1

Table 2 - Dimensions and performance1 - Gyproc plasterboard linings

1 32

Timber joists with suitable timber room perimeter noggings. Noggings also required to support

board edges, unless otherwise stated.

Gypframe RB1 ResilientBars at 450mm centres to

underside of joists.100mm Moy Plus Roll in

the cavity.

Detail Board type Flooring Joist Joist Fire Estimated laboratory Performanceboard centres width resistance6 sound insulation3 substantiationtype2 (min.) 100 - 3150Hz report

Airborne Impactmm mm mins Rw dB Lnw dB

One layer of 12.5mm Gyproc WallBoard d 450 38 305 36 81 C014003

One layer of 12.5mm Gyproc WallBoard a 600 38 30 (modified)4 38 79 C016001

One layer of 12.5mm Gyproc WallBoard d 600 38 30 38 79 C016002

One layer of 15mm Gyproc WallBoard c 600 38 305 40 - C106029

Two layers of 15mm Gyproc WallBoard d 600 47 60 40 76 C016006

Inner layer of 12.5mm Gyproc WallBoard c 600 38 60 40 76 C016008and an outer layer of 15mm Gyproc FireLine

Two layers of 12.5mm Gyproc FireLine d 600 38 60 40 76 C016009

Inner layer of Gyproc Plank and an outer b 600 50 60 40 75 C016007layer of 12.5mm Gyproc WallBoard

Inner layer of Gyproc Plank and an outer d 600 45 60 50 68 C206003layer of 12.5mm Gyproc WallBoard

Inner layer of Gyproc Plank and an outer d 600 45 60 54 67 C016030layer of 12.5mm Gyproc SoundBloc

Two layers of 15mm Gyproc FireLine d 450 47 90 40 78 C014011

1 The fire resistance and sound insulation performances are for ceilings incorporating tapered edge boards with all joints taped and filledaccording to Gypsum Industries’ recommendations. The quoted performances are achieved only if Gypsum Industries’ components areused throughout, and the Company’s fixing recommendations are strictly observed. Any variations in the specification should be checkedwith Gypsum Industries. Where boards are fixed direct to timber joists, screw-fixing is the preferred alternative to nail-fixing andminimises the risk of fixing defects occuring.2 Floor types: a Any structurally suitable wood board flooring.

b Wood board t & g flooring, not less than 15mm (finished) thickness.c Wood board t & g flooring, not less than 18mm (finished) thickness.d Wood board t & g flooring, not less than 21mm (finished) thickness.

3 The acoustic ratings quoted above are based on 200mm deep joists and a walking surface of min. 9.6kg/m3.4 30 : 15 : 15. If the floor type d is used the fire resistance increases to a full 30 minutes.5 Noggings to support board edges not required.6 Board joints must be reinforced with Gyproc Paper Joint Tape for the quoted fire resistance periods to be achieved. Please refer tosection for full details.

1

1

1

1

2

2

2

2

2

3

3

2.2


1 32

Table 3 - Dimensions and performance1 - non-combustible board linings

4 65

Detail Board type Flooring Joist Joist Insulation Fire Performanceboard centres width resistance5 substantiationtype2 (min.) report

mm mm mins

One layer of 6mm MultiBoard b 450 38 - 30 G104019

One layer of 12.5mm MultiBoard a 600 38 - 30 G106021

1 The fire resistance performances are for imperforate ceilings with all joints taped and filled in accordance with Gypsum Industries’recommendations. The quoted performances are achieved only if Gypsum Industries’ components are used throughout, and the Company’sfixing recommendations are strictly observed. Any variations in the specifications should be checked with Gypsum Industries. Where boardsare fixed direct to timber joists, screw-fixing is the preferred alternative to nail-fixing and minimising the risks of fixing defects occurring.2 Floor types: a 21mm plain edge wood board flooring.

b Wood board t & g flooring, not less than 18mm (finished) thickness.c Wood board t & g flooring, not less than 19mm (finished) thickness.d Wood board t & g flooring, not less than 20mm (finished) thickness, or 20mm plain edge boarding with 3mm

hardboard or plywood.3 Use 58mm FireCase Screws at 150mm centres. 38mm x 38mm timber noggings are also required between joists and at the perimeter tosupport board edges.4 Noggings to support board edges not required.5 Board joints must be reinforced with Gyproc Paper Joint Tape for the quoted fire resistance periods to be achieved. Please refer tosection for full details.

Two layers of 10mm MultiBoard a 600 47 - 60 G106022

Two layers of 10mm MultiBoard a 600 47 100mm Moy 60 G106023Plus Roll

80mm x 10mm MultiBoard strips b 4004 50 30mm stone mineral 60 G104024(screw-fixed), with one layer of 10mm wool (64kg/m3)Glasroc MultiBoard (screw-fixed)

80mm x 10mm MultiBoard strips c 600 50 60mm stone mineral 60 G106046(screw-fixed), with one layer of 10mm wool (23kg/m3)MultiBoard (screw-fixed)

One layer of 15mm FireCase S b 600 38 - 60 G106025(screw-fixed)3

100mm x 10mm MultiBoard strips d 6004 38 25mm stone mineral 60 G106026(screw-fixed), with one layer of 12.5mm wool (48kg/m3)MultiBoard (screw-fixed)

One layer of 12.5mm MultiBoard, d 6004 38 - 90 G106027100 x 10mm MultiBoard strips andan outer layer of 12.5mm MultiBoard

One layer of 12.5mm MultiBoard, d 6004 38 100mm Moy 90 G106028100 x 10mm MultiBoard strips and Plus Rollan outer layer of 12.5mm MultiBoard

Timber joists with suitable timber room perimeter noggings.Noggings also required to support board edges, unless stated otherwise.

1

1

1

2

3

4

4

4

5

6

2.2

38




39



19mm Gyproc Bonding or with 2mm c 600 48 120 C016045Gyproc Skimcoat or Carlite Finish

Table 4 - Dimensions and performance1 - upgrading existing lath and plaster ceilings

1 32 4

Existing lath and plasterceiling supported bychicken wire securelynailed to the joists,

battened with 38mm x38mm timber (at 600mmcentres with noggings or450mm centres without

noggings).

Existing ceilingunderdrawn with

metal lath2 securelyfixed to the joists.

Existing lath and plasterceiling (up to 20mmthick) supported by

chicken wire securelynailed to the joists.

Existing ceilingremoved and metal

lath2 securely fixed tothe joists.

Detail Board type Flooring Joist Joist Fire Performanceboard centres width resistance7 substantiationtype3 (min.) report

mm mm mins

One layer of 12.5mm Gyproc WallBoard d 600 38 30 C016019

1 The fire resistance performances are for imperforate ceilings incorporating boards with all joints taped and filled according to GypsumIndustries’ recommendations. The quoted performances are achieved only if Gypsum Industries’ components are used throughout, and theCompany’s fixing recommendations are strictly observed. Any variations in the specifications should be checked with Gypsum Industries.Where boards are fixed direct to timber joists, screw-fixing is the preferred alternative to nail-fixing and minimises the risk of fixingdefects occurring.2 Where plaster is applied to ribbed metal lath, the plaster thickness is measured from the face of the lath, and the lath should be installedin accordance with the manufacturer’s recommendations. With 120 minutes fire resistance construction, the metal lath is independentlyfixed with wire supports from the joist sides.3 Floor types: a Wood board t & g flooring, not less than 20mm (finished) thickness, or 20mm plain edge boarding with 3mm

hardboard or plywood.b Wood board t & g flooring, not less than 21mm (finished) thickness, or 20mm plain edge boarding with 3mm

hardboard or plywood.c Wood board t & g flooring, not less than 22mm (finished) thickness, or 20mm plain edge boarding with 3mm

hardboard or plywood.d Any structurally suitable wood board flooring.

4 Assumes no contribution from the existing lath and plaster ceiling.5 Bridging comprises of a layer of 12.5mm Gyproc MultiBoard resting on 100mm x 12.5mm Gyproc MultiBoard strips which are screw-fixedto the sides of each joist flush with the bottom edge, strips fixed at 300mm centres, top and bottom.6 Fix MultiBoard strips at 300mm centres, top and bottom.7 Board joints must be reinforced with Gyproc Paper Joint Tape for the quoted fire resistance periods to be achieved. Please refer tosection for full details.

Two layers of 12.5mm Gyproc FireLine b 600 38 60 C016022

13mm Gyproc Bonding or with 2mm b 600 37 60 C016024Gyproc Skimcoat or Carlite Finish

Two layers of 10mm MultiBoard b 600 37 60 G106045

100mm x 10mm MultiBoard a 600 50 60 G106029with one layer of 12.5mm MultiBoard

1

1

1

2

3

4

2.2


Two layers of 15mm Gyproc FireLine b 450 45 90 60 57 C204002

4 5

Platform floor. 100mm Moy Plus Roll

between the joists. Floor type c3

Platform floor.

CasoLine MF4 hung underneath timber

joists to give a 277mm cavity, with

80mm Moy Plus Roll

between the joists. Floor type c3

GypFloor SILENT with Gyproc Plank on

Gypframe SIF Floor Channels. 100mm

Moy Plus Roll in the cavity. Gypframe

RB1 Resilient bars at 450mm centres.

Table 5 - Dimensions and performance1 - compartment / separating2 floors

1 32

Separating sub-joist floor

comprising of a platform floor.

100mm Moy Plus Roll in the cavity. Floor type c3

GypFloor SILENT with Gyproc Plank on

Gypframe SIF Floor Channels.

100mm Moy Plus Roll in the cavity.

GypLyner framework to joists.

Detail Board type Flooring Joist Joist Fire Estimated laboratory Performanceboard centres width resistance5 sound insulation substantiationtype2 (min.) 100 - 3150Hz report

Airborne Impactmm mm mins Rw dB Lnw dB

One layer of Gyproc Plank with an outer c 600 44 60 62 56 C016038layer of 12.5mm Gyproc SoundBloc

Two layers of 15mm Gyproc SoundBloc c 600 44 60 66 50 C106011

Two layers of 15mm Gyproc SoundBloc b 450 45 60 61 56 C204006

One layer of Gyproc Plank and one layer b 450 45 60 63 55 C204001of 12.5mm Gyproc SoundBloc

One layer of Gyproc Plank and one layer b 450 45 60 63 55 C154008of 12.5mm Gyproc SoundBloc

Two layers of 15mm Gyproc SoundBloc c 600 47 60 664 48 C106050

1 The fire resistance and sound insulation performances are for ceilings incorporating tapered edge boards with all joints taped and filledaccording to Gypsum Industries’ recommendations. The quoted performances are achieved only if Gypsum Industries’ components areused throughout, and the Company’s fixing recommendations are strictly observed. Any variations in the specification should be checkedwith Gypsum Industries’. Where boards are fixed direct to timber joists, screw-fixing is the preferred alternative to nail-fixing andminimises the risk of fixing defects occuring.2 If in doubt as to whether a floor is to be a compartment or separating floor, or both, please refer to the relevant Technical Guidance Document.3 Floor types: a Any structurally suitable wood board flooring.

b Softwood floor boarding, not less than 21mm (finished) thickness.c Walking surface of 18mm t & g wood board flooring, spot-bonded with Gyproc Sealant at 300mm centres to

a substrate of Gyproc Plank laid on 25mm Moy Sound Deadening Floor Slabs (64kg/m3) laid on a minimumof 12mm wood based sheet sub-deck nailed to the joists.

4 Normal fixing centres for Gypframe MF5 Ceiling sections (450mm) and Gypframe MF7 Primary Support Channels (1200mm).5 Board joints must be reinforced with Gyproc Paper Joint Tape for the quoted fire resistance periods to be achieved. Please refer tosection for full details.

1

2

3

3

3

4

5

2.2

40




41



Two layers of 10mm Gyproc MultiBoard 600 354 150mm Moy 60 G106042Plus Roll

Two layers of 12.5mm Gyproc FireLine 600 38 150mm stone mineral 60 C106048Wool (24kg/m3)

Two layers of 15mm Gyproc FireLine 600 354 30mm stone mineral 60 C106051Wool (45kg/m3)

Table 6 - Dimensions and performance1 - upgrading sound insulation of a basic floor

1 32

195mm x 45mm timber joists at

600mm centres with 18mm t&g

wood chipboard flooring.

CasoLine MF hung underneath the basic

floor (ceiling removed) to give a

277mm cavity. 80mm Moy Plus

Roll in the cavity.

CasoLine MF hung from the basic floor

using Gypframe Acoustic Hangers to

give a 277mm cavity. 80mm

Moy Plus Roll in the cavity.

UpgradingExisting basic floor

Detail Board type Approximate Floor Laboratory sound insulation Performanceweight depth 100 - 3150Hz substantiation

Airborne Impact reportkg/m2 mm Rw dB Lnw dB

Existing layer of 12.5mm Gyproc plasterboard 10 226 38 79 C106028

Two layers of 12.5mm Gyproc SoundBloc 23 320 60 60 C106007

Two layers of 12.5mm Gyproc SoundBloc 23 320 63 54 C106013

1 The sound insulation performances are for imperforate ceilings with all joints taped and filled according to Gypsum Industries’recommendations. The quoted performances are achieved only if Gypsum Industries’ components are used throughout, and theCompany’s fixing recommendations are strictly observed. Any variations in the specifications should be checked with Gypsum Industries.

1

2

3

Table 7 - Dimensions and performance2 – ceilings below roof spaces

1 32 4

Detail Board type Max. joist/ Min. joist / Insulation Fire Performancetruss centres truss type resistance5 substantiation

width reportmm mm mins

One layer of 12.5mm MultiBoard 600 38 150mm Moy 30 G106041Plus Roll

Two layers of 12.5mm Gyproc WallBoard 600 38 150mm Moy 30 C106049

Plus Roll

One layer of 12.5mm Gyproc FireLine 600 38 150mm Moy 30 C106047Plus Roll

Two layers of 12.5mm Gyproc WallBoard 600 354 100mm Moy 30 C106045

2 The fire resistance performances are for imperforate ceilings incorporating boards with all joints taped and filled according to BritishGypsum’s recommendations. The quoted performances are achieved only if Gypsum Industries components are used throughout, and theCompany’s fixing recommendations are strictly adhered to. Any variations in the specifications should be checked with British Gypsum. Whereboards are fixed direct to timber joists, screw-fixing is the preferred alternative to nail-fixing and minimises the risk of fixing defects occuring.3 For fire-rated ceilings below roof spaces, noggings are required regardless of joist spacings and plasterboard thickness.4 Nominal 50mm x 25mm timber battens should be fixed to the side of timber supports where the ceiling boards butt in order to maintain anadequate bearing surface.5 Board joints must be reinforced with Gyproc Paper Joint Tape for the quoted fire resistance periods to be achieved. Please refer tosection for full details.

1

1

2

2

3

4

4

Timber joists or bottom chord of trusses with timber noggings between joists to support board edges and at room perimeter.3

Insulation laid between joists.CasoLine MF hung from joists.

Insulation laid over ceiling grid.

2.2


Fire protection For reaction to fire classifications for Gyproc and Glasrocboards please refer to Section .

Fire resistanceThe fire resistances given in Tables 2, 3, 4, 5, 6 and 8 are for

imperforate ceilings tested to BS 476: Part 8: 1972 or

BS 476: Part 21: 1987, or BS 476: Part 22: 1987, or

assessments based on these tests.

Sound insulationThe airborne and impact sound ratings given in Tables

2, 6 and 7 are for imperforate ceilings and have been

tested in accordance with BS EN ISO 140-3: 1995 and

BS EN ISO 140-6: 1998, and rated in accordance with

BS EN ISO 717-1: 1997 and BS EN ISO 717-2: 1997.

Airtightness is essential for optimum sound insulation.

While most junctions will be sealed with standard jointing

materials, gaps at the perimeter of the floor and ceiling,

and other small airpaths, can be sealed using Gyproc

Sealant.

The sound insulation data quoted was measured in the

absence of flanking transmission. The performance of the

floor in practice will generally be governed by flanking

transmission.

Water vapour controlWhere there is a requirement for a vapour control layer,

DUPLEX grade boards should be specified as the face layer

(i.e. the second layer in double layer linings). The

application of two coats of Gyproc Drywall Sealer to the

face lining will also provide a degree of vapour control.

Please refer also to Timber noggings overleaf.

Thermal propertiesMoy Isover insulation is laid between the joists where

required to provide the specified standard of thermal

insulation.

DESIGN

Please refer to section Introduction - for general

considerations.

Planning - key factorsTo minimise the risk of ceiling finish defects occurring,

seasoned timber with a moisture content not exceeding

that recommended in BS 5268: Part 2: 2002 should be used.

The contractor should ensure that timber supports are

accurately spaced, aligned, and levelled. Consideration

should be given to using Gyproc Drywall Timber Screws as

the preferred method of fixing.

Cavity barriersCavity barriers may be required to satisfy the requirements

of national Building Regulations. Please refer to section

- Cavity barriers.

Strength and robustnessTimber should be aligned and level, and should meet the

requirements of BS 5268: Part 2: 2002. The dimensions and

assembly of timber supports should be sufficient to allow

positive fixing of boards without bounce or undue

deflection due to nailing, screwing, or other applied force.

When the minimum joist width conditions cannot be met, a

timber batten should be securely fixed to the side of those

timber supports where ceiling boards butt in order to

increase the bearing surface. Please refer to Joist width

overleaf.

Where plasterboards are fixed at maximum centres in

adverse conditions the standard of lining can be affected.

Adverse conditions can generally be described as conditions

where high humidity occurs, principally in the cold, damp,

autumn / winter period. They also refer to buildings under

construction during this period where both the structure

and wet applications such as plastering and screeding are

subject to slow drying conditions.

Where a polyethylene vapour control layer is included in

the ceiling construction in conditions described previously,

condensation can form on the polyethylene surface. This

can result in plasterboard becoming unduly damp, and

affecting the standard of acceptability of the lining and

any applied plaster or textured coating.

6.1

6.7

2.1

42




43



Imposed loadsThe designer should ensure that the floor construction is

suitable to support any imposed loads.

Timber noggingsSuitable timber noggings, normally 38mm x 38mm, may be

required between joists and at the room perimeter to

support board edges and board ends. The provision of

noggings depends on the thickness of boards used, and the

spacing of timber joists (please see Table 8). In addition, the

need for noggings is also dependent on any fire resistance

requirements, so Tables 2 and 7 must be referred to.

Timber noggings should always be provided at the room

perimeter except when using 15mm board or 19mm Gyproc

Plank in non-fire rated situations. When fixing DUPLEX grade

boards providing vapour control noggings are required

regardless of joist spacing or board thickness in order to

ensure that vapour control integrity is maintained.

In multi-layer plasterboard ceilings, the provision of

noggings relates to the outer layer board only, unless

otherwise stated.

Nail poppingLoosening of nails in timber can occur through timber

shrinkage (please see Fig 7), or as a result of fixing boards

to misaligned or twisted framing. To reduce the risks,

boards should be fixed tight to framing members.

To minimise any risk of fixing defects occurring use Gyproc

Drywall Timber Screws. If nails are the preferred fixing

method, the risk of subsequent fixing defects can occur.

Fixing to super-dried timber and engineered ‘I’ beamsIt has been established by test that Gyproc Drywall Timber

Screws are the best solution for fixing to standard softwood,

super-dried timber (approximately 12% moisture content).

If engineered I joists are to be used, please contact the joist

manufacturer for fire resistance and sound insulation claims

and for fixing recommendations.

ServicesElectrical and other small service runs can be routed within

the floor cavity. Services should be installed in accordance

with standards, guidelines and recommendations.

Fixtures / fittingsFixtures should be made into joists, or to supplementary

timber.

FinishingPlease refer to section - Finishing Coat Plasters,

section - Jointing, and section - Decorative

Effects.

EstimatingThe estimated construction time is 15 - 20m2 / hour (single

layer ceiling - boarding only) or 8 - 10m2 / hour (double

layer ceiling - boarding only) ready for finishing.

Table 8 - Provision of timber noggings*

Board Maximum joist centresthickness with noggings without noggingsmm mm mm

6 MultiBoard 450 400

9.5 & 10 450 400

12.5 600 450

15 & 19 600 600

*Tables 2 to 7 must also be referred to for fire resistant ceilings.

2.2

1.5

2.4

Joist widthWhere joist width is less than the minimum stated in Tables 2 - 7, the system may not meet its specifiedperformance.

If the minimum fixing tolerances cannot be met, 50mm x

25mm timber battens should be screw-fixed to the side of

the joists where ceiling boards abut in order to extend the

bearing surface.

Fixing to timber framesA technical information sheet is available to download

from our website: www.gypsum.ie



Fig 1 - Joists at 450mm centres using 12.5mm Gyproc WallBoard - board edge noggings not required unless stated in

performance tables*

900mm

1800mm 450mm

Fig 2 - Joists at 600mm centres using 12.5mm Gyproc WallBoard - board edge noggings required unless stated in

performance tables*

1200mm

2400mm 600mm

* Note: where Duplex grade boards are specified to provide vapour control, noggings are always required regardless of joist spacingand plasterboard thickness.

* Note: where Duplex grade boards are specified to provide vapour control, noggings are always required regardless of joist spacingand plasterboard thickness.

Room perimeter noggings required.

Room perimeter noggings required.

44




45



Fig 3 - Joists at 600mm centres using 15mm Gyproc WallBoard - board edge noggings not required unless stated in the

performance tables. Room perimeter noggings not required in non-fire rated situations*.

2400mm 600mm

1200mm

Fig 4 - Twisting of standard soft wood timber joist on drying from 20% to 8% moisture content

* Note: where Duplex grade boards are specified to provide vapour control, noggings are required regardless of joist spacing andplasterboard thickness.


Fig 5 - Fixing boards to trussed rafters

Fig 6 - Fixing tolerances1

35mm 25mm

6mmminimum

A

Table 9 - Fixing plasterboard to timber supports

Board Gyproc Drywall Timber Gyproc Nails to fixthickness Screws to fix board for plasterboard for direct

direct decoration or decoration orplastering plastering

mm mm mm

9.5 32 3012.5 38 4015 38 4019 41 5012.5 over 12.5 51 5012.5 over 19 60 6515 over 15 60 6515 over 19 60 65

1 Boards should be lightly butted with a maximum separation of3mm. Where a cut edge occurs, dimension ‘A’ is 13mm minimum,.Where a bound edge occurs, dimension ‘A’ would be 10mmminimum.

46




47

Ceiling Boards, Tiles and Planks 6.6


Geometric design, perforated boards with a special sound

absorbent tissue backing, provide a jointless finish that is

ready for on-site decoration. All Gyptone boards are capable

of giving sound insulation performance up to Dncw = 39dB.

LINE 6

Edge Nominal Weightprofile size mm kg/m2

Tapered 2400 x 1200 x 12.5 8

LINE 7 BASE

Curve Curve


Tapered 2400 x 900 x 6.5 5 (LINE 7)

6 (BASE)

QUATTRO 41


Tapered 2400 x 1200 x 12.5 8

QUATTRO 46


Tapered 2400 x 1200 x 12.5 8

QUATTRO 47


Tapered 2400 x 1200 x 12.5 8

Gypsum Industries’ ceiling systems create a new flexibility indesign and construction. Additional informationis available upon request, contact the ‘Technical SalesDepartment’. The wide range of products give fresh andcreative freedom for interior designers, enabling them to fullyrealise the visual and acoustic ambience of their designs. Forfull details on our ceilings range, please refer to the GyprocCeilings Guide. The products are available in six edge profilesas shown below.

CEILING PRODUCTS

A E15

E15/A E24

D1 Tapered

A vinyl faced, wipe clean tile ideal for use in hygenic areas,

with Gyprex BIO containing an active Biocide.

SATINSPAR


A 600 x 600 x 8 6.9

A 1200 x 600 x 8 6.9

BIO


A 600 x 600 x 8 6.9

GYPREX

GYPTONE BOARDS


48

Ceiling Boards, Tiles and Planks6.6

Decorative, perforated and pre-finished gypsum suspended ceiling tiles with integral sound absorbent backing tissue.

BASE 31


A 600 x 600 x 12.5 9

D1 600 x 600 x 12.5 9

E15 600 x 600 x 12.5 9

LINE 4


E15 600 x 600 x 12.5 8

QUATTRO 20Edge Nominal Weightprofile size mm kg/m2

D1 600 x 600 x 12.5 8

E15 600 x 600 x 12.5 8

QUATTRO 22


D1 600 x 600 x 12.5 8

E15 600 x 600 x 12.5 8

POINT 11


E15 600 x 600 x 12.5 8

POINT 12Edge Nominal Weightprofile size mm kg/m2

E15 600 x 600 x 12.5 8

BASE 33


E15/A 1800 x 300 x 12.5 9

E15/A 2100 x 300 x 12.5 9

LINE 8


E15/A 1800 x 300 x 12.5 8

E15/A 2100 x 300 x 12.5 8

QUATTRO 55


E15/A 1800 x 300 x 12.5 8

E15/A 2100 x 300 x 12.5 8

POINT 15


E15/A 1800 x 300 x 12.5 8

E15/A 2100 x 300 x 12.5 8

GYPTONE TILES

GYPTONE PLANKS

Decorative, perforated and pre-finished gypsum suspended ceiling planks with integral sound absorbent backing tissue.



49

Ceiling Boards, Tiles and Planks 6.6


CASOPRANO

ROC - plain white.


A 600 x 600 x 8 6.9

E15 600 x 600 x 9.5 7.9

E24 600 x 600 x 9.5 7.9

STAR - lightly pinned.


A 600 x 600 x 8 6.9

E15 600 x 600 x 9.5 7.9

E24 600 x 600 x 9.5 7.9

BIANCA - fine granulated texture.


A 600 x 600 x 8 6.9

E15 600 x 600 x 9.5 7.9

E24 600 x 600 x 9.5 7.9

OLA - perforated (sound absorbing).


A 600 x 600 x 8 6.5

E15 600 x 600 x 9.5 7.2

A range of pre-finished white gypsum tiles in a choice of smooth or textured finishes, with perforated or un-perforated

versions for sound absorption or insulation.

ALTO - perforated (sound reflecting).


A 600 x 600 x 8 6.9

E15 600 x 600 x 9.5 7.9

NOVA - perforated (sound absorbing).


A 600 x 600 x 8 6.5

E15 600 x 600 x 9.5 7.2

FORTE - fissured (sound reflecting).


A 600 x 600 x 8 6.9

E15 600 x 600 x 9.5 7.9

E24 600 x 600 x 9.5 7.9

VOICE - fissured (sound absorbing).


A 600 x 600 x 8 6.5

E15 600 x 600 x 9.5 7.2

E24 600 x 600 x 9.5 7.2


50

Ceiling Boards, Tiles and Planks6.6

RIGITONE

8 / 18


Square 1998 x 1188 x 12.5 10

10 / 23


Square 2001 x 1196 x 12.5 10

15 / 30


Square 2010 x 1200 x 12.5 9.5

Gypsum boards perforated with regular or random patterns with sound absorbent tissue backing. Provides a monolithic

appearance ready for on-site decoration. Boards can be dry curved to a minimum radius of 5000mm.

12 - 20 / 66


Square 1980 x 1188 x 12.5 9.5

8 - 15 - 20


Square 2000 x 1200 x 12.5 10

8 - 15 - 20 SUPER


Square 1960 x 1200 x 12.5 10



51

Notes



Suitable cavity barriers can be formed using Gyproc FireLine

or Gyproc MultiBoard of appropriate thickness.

Please refer to Technical Guidance Document B, Fire Safety

for guidance.

INTRODUCTION

52

Cavity barriers6.7



53

Cavity barriers 6.7

PERFORMANCE

Fire protectionFor reaction to fire classifications for Gyproc and Glasroc Fboards please refer to Section .

Fire resistanceThe fire resistances in Table 2 are for imperforate barrierswith all joints taped and filled according to GypsumIndustries’ recommendations. Where there is a relaxation onthe insulation requirement, the jointing stage can beomitted.

Fire-stoppingA cavity barrier must be tightly fitted to rigid construction, or,if it abuts against slates, tiles, corrugated sheeting, or otherconstruction to which it cannot be so fitted, then it must befire-stopped at the junction. Please refer to CONSTRUCTIONDETAILS, which show fire-stopping solutions using suitablerock mineral wool.

DESIGN

Planning - key factorsCavity barriers must maintain their performance during thelife of a building, taking account of any possible buildingmovement due to subsidence, shrinkage, or thermal change.In addition, the possible failure of its fixings or adjacentconstruction in the event of a fire, and the collapse in a fire ofany permitted services penetrating the cavity barrier, shouldbe considered.

INSTALLATION

The procedure for fixing timber or metal framing to theceiling / structure, and for fixing Gyproc boards to form thecavity barrier, is in line with Gypsum Industries’ normal drylining recommendations.


EnvironmentalGypsum Industries’ Cavity Barriers are unsuitable for use inareas subject to continuously damp or humid conditions.Reference should be made to national Building Regulations,or associated documentation, for the various types ofconstruction which are exempt from the requirements.

Gyproc boards

COMPONENTS


Type of board Thickness Width(mm) (mm)

FireLine 12.5, 15 1200MultiBoard 6,10 1200

Gypframe metal stud framing – to suit.

Timber framing (by others) – to suit.

Gyproc Drywall Screws.

Gyproc Drywall Timber Screws.

Rock mineral wool (by others) – for fire-stopping.

Moy Isover Sleeved Cavity Fire Barrier – for cavity closure

in external timber frame walls.

2.1



Table 2 - Fire performance1

Detail Construction Fire resistance PerformanceIntegrity : Insulation3 substantiation

minutes report

10mm MultiBoard screw-fixed to one side of a 30 : 15 G11000148S50 ‘C’ studs framework with studs at 600mm centresusing Gyproc Drywall Screws at 300mm centres. Fire stopping material, e.g. rock mineral wool to the perimeter as necessary.

10mm MultiBoard fixed to one side of a timber 30 : 15 G110002stud framework incorporating 75mm x 50mm studs at 600mm centres using Gyproc Drywall Timber Screws at 300mm centres.Fire-stopping material, e.g. rock mineral wool to the perimeter as necessary.

As above but with 12.5mm Gyproc FireLine. 30 : 15 E106002

6mm MultiBoard screw-fixed each side of 30 : 15 G11000348S50 ‘C’ studs at 600mm centres using Gyproc Drywall Screws at 300mm centres. Fire-stopping material, e.g. rock mineral wool to the perimeter as necessary.

Moy Sleeved Cavity Fire Barrier sealing the cavity between 30 : 302 E106004the outer brick wall and the internal timber leaf.

Notes:1 The fire resistances are for barriers with all joints taped and filled according to Gypsum Industries’ recommendations. The quotedperformances are achieved only if Gypsum Industries’ components are used throughout, and the Company’s fixing recommendations arestrictly observed. Any variations in the specifications should be checked with Gypsum Industries.2 Joints between sleeved cavity barriers must be compressed in accordance with Moy Isovers’ recommendations in order to achieve 30minutes insulation.3 Board joints must be reinforced with Gyproc Paper Joint Tape for the quoted fire resistance periods to be achieved. Please refer to sectionfor full details.

2.2

54

Cavity barriers6.7



55

Cavity barriers 6.7


Note: For a typical construction detail using Moy Sleeved Cavity Barrier, please see Table 2 - Fire performance.

Fig. 1 - Sub-division of ceiling void using timber framedcavity barrier.

Fig. 3 - Sub-division of ceiling void using metal framedcavity barrier.

Fig. 4 - Cavity barrier at T junction of partitions.

Fig. 5 - Sub-division of partition cavity

Fig. 2 - Capped partition.

1m orgreater

1m orgreater



Glasroc F SoffitLine combines the benefits of Glasroc F

MultiBoard with thermally efficient phenolic foam

insulation. It can be fixed to the underside of semi-exposed

soffits using the GypLyner system, the CasoLine MF system,

or timber battens. Alternatively, it can be directly fixed to

the soffit using proprietary anchors.

The smooth, off-white surface finish of Glasroc F SoffitLine

makes it ideal for carports and basements where the panels

are left undecorated.

Whilst every effort is made during manufacture to maintain

uniformity of colour and texture, there might be slight

variations. Gypsum Industries cannot guarantee exact

matching. A higher quality finish is achieved if the board is

painted.

The thermally efficient phenolic foam and foil backing allow

high standards of insulation to be achieved.

INTRODUCTION

56

Semi-exposed soffits6.8



57

Semi-exposed soffits 6.8

Fixing SoffitLine to metal framingIf the CasoLine MF option is to be used, Gypframe MF5

Ceiling Section is twice fixed directly to the concrete soffit

at 600mm centres using suitable proprietary fixings.

If the GypLyner option is used, then Gypframe GL1 Lining

Channel is fixed at 600mm centres via Gypframe GL2 or

GL9 Brackets. The Gypframe GL9 Bracket provides for a

greater stand-off to allow for deeper service routings.

Glasroc F SoffitLine is installed transverse to channel

sections using Gyproc Drywall Screws inserted at 600mm

centres. Normal 600mm framing centres will achieve

deflection criteria of L/360. Where deflection criteria are

more stringent, framing centres will need to be reduced

to 400mm.

Fixing SoffitLine to timber battensTimber battens are fixed to the soffit at 600mm centres

using suitable proprietary fixings. Glasroc F SoffitLine is

installed to the timber using Gyproc Drywall Timber

Screws inserted at 600mm centres. Normal 600mm framing

centres will achieve deflection criteria of L/360. Where

deflection criteria are more stringent, framing centres will

need to be reduced to 400mm.

Fixing directly to the concrete soffitGlasroc F SoffitLine is fixed using suitable proprietary

anchors at 400mm centres to board edges / ends and also

in the field of the boards.

There may be a slight risk of pattern staining where

temperature, humidity, and airborne pollutants are

extreme.

INSTALLATION




Health and SafetySafety Data Sheets for all Gypsum Industries’ products

are available to download from our website:

www.gypsum.ie, or via the Technical Sales Department.

EnvironmentalGlasroc F SoffitLine must not be subjected to direct exposure

and to elements such as driving rain.

COMPONENTS

Table 1 - Dimensions.

Type of board Thickness Width Lengthmm mm mm

Glasroc F SoffitLine1 26, 36, 46, 56, 1200 240066, 76, 86

1 6mm Glasroc F MultiBoard with a backing of foil faced CFC andHCFC-free phenolic foam providing integral vapour control and a highlevel of thermal insulation.

Drywall Screws – used to fix boards to metal framing,

provide minimum 10mm penetration into the metal section.

Drywall Timber Screws – used to fix boards to timber

supports provide minimum 25mm penetration into

the timber.

Glasroc board

58




Fire protection

Both Glasroc F MultiBoard and the phenolic foam surface

achieve Class 0 ratings when tested to BS 476: Part 6: 1989

and Part 7: 1997.

Phenolic foam has an obscuration of less than 5% when

tested to BS 5111: Part 1: 1974 Methods of testing for

determination of smoke generation characteristics of cellular

plastics and cellular rubber materials.

The recommended installation systems for Glasroc F

SoffitLine incorporate primary or secondary mechanical

fixings so as to maintain the fire protection afforded by the

MultiBoard facing.

Glasroc F SoffitLine is suitable for semi-exposed applications

such as soffits and car-ports, where perimeters are open to

the elements. During construction it is acceptable for Glasroc

F SoffitLine to be temporarily exposed to direct rainfall, or

other sources of water, so long as drying out has occurred

prior to decoration. The phenolic foam insulation has a

closed cell structure giving it good resistance to moisture.

Condensation control

Glasroc F SoffitLine offers significant resistance to water

vapour transmission, provided that all board joints are taped

and filled in accordance with Gypsum Industries’ standard

recommendations. The phenolic foam insulation is faced

with foil which acts as a vapour control membrane.

Surface condensation can occur at cold bridges such asaround openings. The use of Glasroc F SoffitLine minimisesthe risk of surface condensation occuring.

PERFORMANCE Thermal properties

For thermal conductivity (λ) and thermal resistance (R) values

relating to Glasroc F SoffitLine, please refer to section .

Services

The cavity between the laminate and the background can be

used to incorporate services.

Services should be installed in accordance with all available

standards, guidelines and recommendations.

Fixtures

The fixing device selected should be long enough to bridge

the cavity and give adequate penetration into the soffit.

Finishing

Joints should be filled using Pro Fin Quick-Set Filler, finished

with Readymix Pro Fin Semi-Lite Filler and Finishing

Compound.

If a paint finish is desired, once the jointing material has

dried, apply at least two coats of exterior quality paint in

accordance with the manufacturer’s instructions.

2.1

DESIGN

59

Semi-exposed soffits 6.8




Fig. 1 - Fixing to concrete soffit using MF sections. Fig. 2 - Direct fix to MF sections (plan)

600mm

600mm

Fig. 3 - Fixing to concrete soffit using GypLyner.

Fig. 4 - Fixing to concrete soffit using timber battens.

60




61

Notes




Notes


book 1_jan09.qxd:Layout 1 27/11/2008 11:41 Page 19

Dublin officeUnit 14, Park West Industrial Park, Dublin 12Telephone 00 353 1 629 8400 | Facsimile 00 353 1 623 7054E-mail [email protected]

Belfast officeThe Castleton Centre, 30-42 York Road, Belfast BT15 3HETelephone 028 90744009 | Facsimile 028 90744010E-mail [email protected]

Website: www.gypsum.ie

Gypsum IndustriesGypsum Industries is a market leader in plasterboard and plaster,manufacturing in Ireland since 1936. Our Plasters & Plasterboards are marketedunder the GYPROC brand. We are also distributors of GLASROC F glass reinforcedgypsum boards, GYPFRAME metal, GYPROC ceiling products, and ARTEX &BLUEHAWK DIY products.

Gypsum Industries is the leading supplier and foremost authority on internalwall and ceiling systems in Ireland, providing fast track lightweight buildingsystems to meet the needs of today’s ever changing construction industry.

Our SpecSure ® GuaranteeSpecSure® is a unique ‘off the shelf’ warranty to end users that confirms GypsumIndustries proprietary systems will perform to the parameters published in ourcurrent literature for the period of time that the system is used for its originallydesigned purpose – a lifetime warranty!

To qualify for SpecSure® simply specify and install Gypsum Industries systems inline with the recommendations in our current Product Manual (www.gypsum.ie).

Technical service Gypsum Industries’ Technical Sales Team is available to provide technical advicewhen the company’s systems are being specified or installed. We offer architectsand installers total system support, test back-up, technical helpline, design anddetailing assistance and on-site support by technical experts. Please contact theTechnical Sales Team for further information.

A4_F&C 6_08.qxd:A4_GYPROC_08.qxd 08/12/2008 14:32 Page 4

Documents

Book 6 - Floor & Ceilings Jan 09