BUILT-UP ROOFING SOLUTIONS WITH RIGID INSULATION BOARDS … · built-up roofing solutions with rigid insulation boards on concrete decks for new-build and refurbishment ... din 1055

BUILT-UP ROOFING SOLUTIONS WITH RIGIDINSULATION BOARDS ON CONCRETE DECKS

FOR NEW-BUILD AND REFURBISHMENT

FESCO, FESCO S, RETROFIT, RETROFIT S, FESCO FILLET,PF, PUR, EPS UNDER-LAYERS

Fully bonded roofinga. roof maintenance or serviceaccess

b. maintenance access walkways

Ballasted roofinga. roof maintenance

b. roof maintenance or service accessc. service roof

Pedestrian access roofsa. pavers on paving supports

b. tiling or paving slabs

Roof gardens

Car park roofs,…a. light-weight vehicles

b. heavy vehicles or window cleaningequipment support

Mastic asphalt roofinga. new build (except car parks)

b. total refurbishment or car park decks

Refurbishment over existingbuilt-up roofing

Solutions

E-a5

1

2

3

4

5

6

7

Long term members of:

1b 2b

1a

2c

3a

3b

4

5b 6b

7

2a

5a 6a

SOLUTIONS

Fully-bonded waterproofing

Fesco fully bonded in hot bitumen to the vapour barrier

Alternatives:- single thickness Fesco S fully bonded in hot bitumen with torch-applied waterproofing- several layers fully bonded in hot bitumen with lower layer of PF, PUR or PIR

Reinforced walkway membrane



Suitable for use in new build and refurbishment projectsResists frequent foot traffic both during and afterInstallation

Dimensionally stable in fully bonded applicationsResists heat (torch application, hot bitumen…)increases the service life of the waterproofing layer

1aRoof maintenanceor service access

1bMaintenance access

walkways

ROUTE DE LAUTERBOURG | CS 90148 | 67163 WISSEMBOURG CEDEX | FRANCE

Fully bonded roofing1

SOLUTIONS



Alternatives:- single thickness Fesco S fully bonded in hot bitumen with torch-applied waterproofing- several layers fully bonded in hot bitumen with lower layer of PF, PUR or PIR

Reinforced walkway membrane



Suitable for use in new build and refurbishment projectsResists frequent foot traffic both during and afterInstallation

Dimensionally stable in fully bonded applicationsResists heat (torch application, hot bitumen…)increases the service life of the waterproofing layer

1aRoof maintenanceor service access

1bMaintenance access

walkways


Fully bonded roofing1

Concrete or stone paving slabs

Gravel

Loose-laid waterproofingFesco loose-laid, or bonded withhot bitumen or cold adhesive to the vapour barrier

Resists frequent foot traffic both during and after installationProtects the waterproofing from perforationNo separation layer with loose-laid waterproofingResists heat (torch application, hot bitumen…)

Increases the service life of the waterproofing layerProtects lower layer of organic insulation (PF/PUR/EPS)Dimensionally stable in fully bonded applications

2aRoof maintenance

with walkwayof pavers on a bed

of gravel


Ballasted roofing2


Gravelprotections:• EPS board 20 mm min.• non-woven polyester matLoose-laid waterproofing without separationlayerFesco loose-laid, or bonded with hot bitumenor cold adhesive to the vapour barrier

2bRoof maintenanceor service access

with walkway ofpavers on a layer

of EPS

Advantages of fully-bondedsystem:-faster waterproofing

installation-the protective layer can

be installed later

Alternative:- Fesco or Fesco S, with lower layer of PF, PUR

or EPS, in independent or fully-bonded system

Alternative: see 2a


Non-woven polyester mat

Loose-laid waterproofing without separationlayer

Fesco loose-laid, or bonded with hot bitumenor cold adhesive to the vapour barrier

2cService roof

Alternative: see 2a

Concrete or (or wood) pavers

Max. load on the base of supports:0,6 daN/cm2 on Fesco

Loose-laid waterproofing without separation layerFesco loose-laid, or bonded with hot bitumen or cold adhesive to the vapour barrier

Resists frequent foot traffic both during and after installationProtects the waterproofing from perforationNo separation layer with loose-laid waterproofing

Suitable for all types of trafficDimensionally stable in fully bonded applicationsIncreases the service life of the waterproofing layer

3aPavers on

paving supports


Pedestrian access roofs3

Resists frequent foot traffic both during and after installationNo separation layer with loose-laid waterproofingHigh weight of soil permitted

Dimensionally stable in fully bonded applicationsIncreases the service life of the waterproofing layer

Roof gardens4

Alternative: see 2a

Tiling finish

Reinforced concrete


GravelLoose-laid waterproofing without separationlayerFesco loose-laid, or bonded with hot bitumenor cold adhesive to the vapour barrier

Soil

Polyester filter membrane

Drainage layer

Root-resistant waterproofing withoutseparation layer

Fesco in 1 or 2 layers, loose-laid or bonded(hot bitumen or cold adhesive) to thevapour barrier

3bTiling or

paving slabs

Alternative: see 2a

Alternative: see 2a

self-blockingpaving stoneson bed of sand



be installed later

Reinforced concrete slab (*)


GravelNon-woven polyester matLoose-laid waterproofing without separationlayerFesco in 1 or 2 layers, loose-laid or bonded(hot bitumen or cold adhesive) to the vapourbarrier

The "benchmark" for insulated car parks for light and heavy vehiclesOptimisation of the reinforced concrete slab due to theexcellent compression resistance

Protects the waterproofing from perforationNo separation layer with loose-laid waterproofingDimensionally stable in fully bonded applications

5aLight-weight

vehicles


Car park roofs and window cleaning equipment support5


Non-woven polyester matGravelNon-woven polyester matLoose-laid waterproofing without separationlayerFesco in 1 or 2 layers, loose-laid or bonded(hot bitumen or cold adhesive) to the vapourbarrier

5bHeavy vehicles

or windowcleaningequipment support



be installed later

(*) For the calculation of the reinforced concrete the specialised Engineering office should take into account the recommendations ofthe Building regulations and the following design considerations for use under reinforced concrete:• compressive stress for Fesco Rcs = 0,13 MPa (130 kPa)• corresponding deformations dsmin = 0,7 % dsmax = 1,2%• construction elements such as expansion joints, safety factor for speed, etc…

Some examples of loadings (other examples are to be found in Eurocode 1, DIN 1055 and DIN 1072):

Thermal insulation: to protect the supporting concrete deck against cracking etc... it is recommended, even if there is no specificrequirement for energy conservation, to insulate with a minimum thermal resistance of R = 1,00 m2K/W, i.e. minimum 50 mm thickfor Fesco.

Distance betweencentres

cm

Surface area of one wheel

cm2

Weight per wheel

kN

Twin wheels

Fire engine 22,5 (~ 2,25 t) 256 24Heavy goods vehicle 32,5 (~ 3,25 t) 500 35Very heavy goods vehicle 60 (~ 6 t) 625 50

Concrete or (or wood) pavers

Max. load on the base of supports:0,6 daN/cm2 on Fesco

Loose-laid waterproofing without separation layerFesco loose-laid, or bonded with hot bitumen or cold adhesive to the vapour barrier

Resists frequent foot traffic both during and after installationProtects the waterproofing from perforationNo separation layer with loose-laid waterproofing

Suitable for all types of trafficDimensionally stable in fully bonded applicationsIncreases the service life of the waterproofing layer

3aPavers on

paving supports


Pedestrian access roofs3

Resists frequent foot traffic both during and after installationNo separation layer with loose-laid waterproofingHigh weight of soil permitted

Dimensionally stable in fully bonded applicationsIncreases the service life of the waterproofing layer

Roof gardens4

Alternative: see 2a

Tiling finish

Reinforced concrete


GravelLoose-laid waterproofing without separationlayerFesco loose-laid, or bonded with hot bitumenor cold adhesive to the vapour barrier

Soil

Polyester filter membrane

Drainage layer

Root-resistant waterproofing withoutseparation layer

Fesco in 1 or 2 layers, loose-laid or bonded(hot bitumen or cold adhesive) to thevapour barrier

3bTiling or

paving slabs

Alternative: see 2a

Alternative: see 2a

self-blockingpaving stoneson bed of sand



be installed later



GravelNon-woven polyester matLoose-laid waterproofing without separationlayerFesco in 1 or 2 layers, loose-laid or bonded(hot bitumen or cold adhesive) to the vapourbarrier

The "benchmark" for insulated car parks for light and heavy vehiclesOptimisation of the reinforced concrete slab due to theexcellent compression resistance

Protects the waterproofing from perforationNo separation layer with loose-laid waterproofingDimensionally stable in fully bonded applications

5aLight-weight

vehicles


Car park roofs and window cleaning equipment support5


Non-woven polyester matGravelNon-woven polyester matLoose-laid waterproofing without separationlayerFesco in 1 or 2 layers, loose-laid or bonded(hot bitumen or cold adhesive) to the vapourbarrier

5bHeavy vehicles

or windowcleaningequipment support



be installed later

(*) For the calculation of the reinforced concrete the specialised Engineering office should take into account the recommendations ofthe Building regulations and the following design considerations for use under reinforced concrete:• compressive stress for Fesco Rcs = 0,13 MPa (130 kPa)• corresponding deformations dsmin = 0,7 % dsmax = 1,2%• construction elements such as expansion joints, safety factor for speed, etc…

Some examples of loadings (other examples are to be found in Eurocode 1, DIN 1055 and DIN 1072):

Thermal insulation: to protect the supporting concrete deck against cracking etc... it is recommended, even if there is no specificrequirement for energy conservation, to insulate with a minimum thermal resistance of R = 1,00 m2K/W, i.e. minimum 50 mm thickfor Fesco.

Distance betweencentres

cm

Surface area of one wheel

cm2

Weight per wheel

kN

Twin wheels

Fire engine 22,5 (~ 2,25 t) 256 24Heavy goods vehicle 32,5 (~ 3,25 t) 500 35Very heavy goods vehicle 60 (~ 6 t) 625 50

Protective layer

Mastic asphalt layers

Separation sheet

20 mm min. Fesco on PF, PUR or EPS (*)

Loose-laid lower layer of PF, PUR or EPS

Inaccessible, pedestrian access, roof garden and lightweight vehiclesUnaffected by the heat of the asphaltConservation of thermal insulation properties

Resists frequent foot traffic both during and after installationProtects lower layer of organic insulation (PF, PUR or EPS)Quick application with bulk asphalt trucks

6aNew build

(except car parks)


Mastic asphalt roofing6

Simplifies preparatory work on the existing waterproofingFits into available height of existing upstandsFlat, even surface for the new waterproofing

Compensates for the thermal inertia of the previousprotective layerResists frequent foot traffic both during and after installation

Refurbishment over existing built-up roofing7

(*) on EPS: 30 mm minimum Fesco when masticasphalt applied in bulk

Alternative: for improved insulation value -Fesco or Fesco S

New, fully-bonded waterproofing

Retrofit or Retrofit S fully-bonded

existing waterproofing (fully or partiallybonded, or asphalt) (*)existing insulation (*)vapour barrier (*)(*) an initial evaluation of the existing built-up roofing system should be carried out to ensure its suitability as a base for the new waterproofing.

Protective layer

Mastic asphalt layers

Separation sheet

Fesco loose-laid or bonded, in one or several layers

6bTotal refurbishment

or car park decks

ENTWURFSÜBERLEGUNGEN

Codes of Practice

The design considerations indicated in this brochure are applicable for the United Kingdom and Northern Ireland and should be assessed in accordance with BS 8217: 1994, Code of Practice for Built-up felt Roofing, BS 6339: Part 2: 1997: loading for buildings:Code of Practice for wind loads, BRE Digests Nos. 119 ofJuly 1970 and 346 parts 1 to 8 July 1989 to December 1990.

• Mechanically fastened in accordance with the technical documentation of the fastener manufacturer and approved specifications for the mechanically fastened waterproofing,• Loose-laid under ballasted waterproofing systems.

On site, insulation boards should be stored clear of the ground on a clean level surface, under cover, to protect them from moisture or mechanical damage. Boards should be installed dry and any boards that have been allowed to get wet should be put to one side to dry out before use.Boards should be laid break-bonded and all joints lightly butted.The waterproofing should be applied to the boards as soon as possible after fixing. At the end of each day's work, or whenever work is interrupted, a night joint must be made to avoid water penetration.

WaterproofingBoards are for use with waterproofing specifications of:• built-up bitumen felt to BS 747: 1994 in accordance with BS 8217: 1994• mastic asphalt in accordance with BS 8218: 1998.• other waterproofing systems should be applied in accordance with the manufacturer's recommendations and relevant Agrément Certificate.

Depending on the use of the roof, Fesco insulation boardsare suitable for use with waterproofing that is either:• fully-bonded mineral surface finish• bonded or loose-laid under ballasted systems (without the need for a separation layer)• or mechanically fastened.

When installing torch-receivable Fesco S insulation boards, the roofing felts are torched directly on to the specially coated upper surface of the insulation board, by melting the sacrificial polypropylene facing with the gas-torch.When using Retrofit S, it is recommended to melt the polypropylene layer first and then direct the flame on to the waterproofing roll to effect the welding of the two elements.

Roof ProtectionFesco insulation boards are suitable for use under all typesof ballasted waterproofing systems:• Gravel, pavers on paving supports, paving stones on a bedof sand, concrete or stone paving slabs on a protection layer,• Roof garden build-up with its specific requirements forfilter and drainage layers, etc...,• Poured concrete for reinforced concrete - pedestrian,technical or light vehicle access - or calculated specifically for use with heavy goods vehicles and window cleaning equipment support.For applications under asphalt concrete for roof deckswith pedestrian access and roof gardens, consult thebrochure E-a3 (solutions with Fesco LT and SP).

Typical U-values

The minimum thickness of insulation - either Fesco by itself or as a protection to a lower layer of organic insulation (PF, PUR or EPS) will depend on the insulation requirements and the available height at the roof upstands.The figures below show the overall insulation thickness required for a given U-value, under the following conditions:concrete deck 12 cm thick with a two layer self-protectedwaterproofing system (or under ballast). These figures are for guidance only.

Roof build-up

Concrete roof deckDecks should be designed in accordance with current andrelevant standards.Flat roofs should have a minimum finished fall to ensureadequate drainage.Tapered insulation boards can be used to achieve certainfalls (see the specific brochure - FescoDrain).

Water vapour controlA suitable vapour control layer must be installed as describedin BS 8218: 1998 or BS 8217: 1994. Care should be taken toensure continuity at joints, upstands and roof penetrations.

Application of the insulation boardsBoards can be applied to the vapour barrier as follows:• Bonded with a cold bituminous adhesive under ballastedwaterproofing systems, or according to the recommendationsof the waterproofing manufacturer,

In new building work reference should be made to the Building Regulations revised after 2001, which stipulate the minimum recommended U-values for roofs, i.e. 0,25 W/m2.K. Thickness requirements for U-values beyond those shown above are available on request.

DESIGN CONSIDERATIONS


U-value

W/m2.K

0,38

0,33

0,29

0,25

Fesco

mm

120

2x70

2x80

2x95

PF +Fesco 20 mm

mm

60

70

75

85

PUR +Fesco 20 mm

mm

70

85

95

105

EPS +Fesco 20 mm

mm

90

105

120

140


Codes of Practice

The design considerations indicated in this brochure are applicable for the United Kingdom and Northern Ireland and should be assessed in accordance with BS 8217: 1994, Code of Practice for Built-up felt Roofing, BS 6339: Part 2: 1997: loading for buildings:Code of Practice for wind loads, BRE Digests Nos. 119 ofJuly 1970 and 346 parts 1 to 8 July 1989 to December 1990.

• Mechanically fastened in accordance with the technical documentation of the fastener manufacturer and approved specifications for the mechanically fastened waterproofing,• Loose-laid under ballasted waterproofing systems.

On site, insulation boards should be stored clear of the ground on a clean level surface, under cover, to protect them from moisture or mechanical damage. Boards should be installed dry and any boards that have been allowed to get wet should be put to one side to dry out before use.Boards should be laid break-bonded and all joints lightly butted.The waterproofing should be applied to the boards as soon as possible after fixing. At the end of each day's work, or whenever work is interrupted, a night joint must be made to avoid water penetration.

WaterproofingBoards are for use with waterproofing specifications of:• built-up bitumen felt to BS 747: 1994 in accordance with BS 8217: 1994• mastic asphalt in accordance with BS 8218: 1998.• other waterproofing systems should be applied in accordance with the manufacturer's recommendations and relevant Agrément Certificate.

Depending on the use of the roof, Fesco insulation boardsare suitable for use with waterproofing that is either:• fully-bonded mineral surface finish• bonded or loose-laid under ballasted systems (without the need for a separation layer)• or mechanically fastened.

When installing torch-receivable Fesco S insulation boards, the roofing felts are torched directly on to the specially coated upper surface of the insulation board, by melting the sacrificial polypropylene facing with the gas-torch.When using Retrofit S, it is recommended to melt the polypropylene layer first and then direct the flame on to the waterproofing roll to effect the welding of the two elements.

Roof ProtectionFesco insulation boards are suitable for use under all typesof ballasted waterproofing systems:• Gravel, pavers on paving supports, paving stones on a bedof sand, concrete or stone paving slabs on a protection layer,• Roof garden build-up with its specific requirements forfilter and drainage layers, etc...,• Poured concrete for reinforced concrete - pedestrian,technical or light vehicle access - or calculated specifically for use with heavy goods vehicles and window cleaning equipment support.For applications under asphalt concrete for roof deckswith pedestrian access and roof gardens, consult thebrochure E-a3 (solutions with Fesco LT and SP).

Typical U-values

The minimum thickness of insulation - either Fesco by itself or as a protection to a lower layer of organic insulation (PF, PUR or EPS) will depend on the insulation requirements and the available height at the roof upstands.The figures below show the overall insulation thickness required for a given U-value, under the following conditions:concrete deck 12 cm thick with a two layer self-protectedwaterproofing system (or under ballast). These figures are for guidance only.

Roof build-up

Concrete roof deckDecks should be designed in accordance with current andrelevant standards.Flat roofs should have a minimum finished fall to ensureadequate drainage.Tapered insulation boards can be used to achieve certainfalls (see the specific brochure - FescoDrain).

Water vapour controlA suitable vapour control layer must be installed as describedin BS 8218: 1998 or BS 8217: 1994. Care should be taken toensure continuity at joints, upstands and roof penetrations.

Application of the insulation boardsBoards can be applied to the vapour barrier as follows:• Bonded with a cold bituminous adhesive under ballastedwaterproofing systems, or according to the recommendationsof the waterproofing manufacturer,

In new building work reference should be made to the Building Regulations revised after 2001, which stipulate the minimum recommended U-values for roofs, i.e. 0,25 W/m2.K. Thickness requirements for U-values beyond those shown above are available on request.

DESIGN CONSIDERATIONS


U-value

W/m2.K

0,38

0,33

0,29

0,25

Fesco

mm

120

2x70

2x80

2x95

PF +Fesco 20 mm

mm

60

70

75

85

PUR +Fesco 20 mm

mm

70

85

95

105

EPS +Fesco 20 mm

mm

90

105

120

140


Fire Safety

The fire rating of a roof containing Fesco insulation boardswill depend on the type of deck and the nature of the waterproofing layer and/or the surface finish used.Reference should be made to national Building Regulations:England & Wales:Approved Document B, Section 14Scotland:Technical standards D3.5 and D6.7, and Appendix to partD "Provisions deemed to satisfy the Technical standards".N. Ireland:Technical Booklet E, Regulation E8.

Resistance to roof traffic

Expanded perlite insulation boards, with D classification toUEAtc test methods, are highly resistant to compression and point loading.Flat roofs incorporating expanded perlite boards are better able to resist the constraints of frequent roof traffic, thus limiting the risks of damage to the roofing felts during and after installation. Rigid roof insulation boards contribute to the service life of the built-up roofing system by limiting the risk of perforation, and the possibility of the felts splitting or tearing at the joints in the insulation layer.

Environment

Expanded perlite insulation boards are manufactured from both natural and recycled products, have zero ODP (Ozone Depletion Potential) and are chemically neutral.For further information consult the brochure "Respectingthe Environment".

Standards and Approvals

Fesco and Retrofit insulation boards are manufacturedunder a quality control system approved to ISO 9001:2000.The high quality of all products is continuously monitored,not only internally, but also by external audits by thedifferent European Agrément Boards that certify the productionprocess.These boards also meet the requirementsof EN 13169 and are CE marked.All products in the Fesco range of insulating boards arecertified under Acermi thermal conductivity procedures,and the principal applications are covered by currentAgrément Certificates.

Health and Safety

No special precautions need to be taken when using the range of Sitek's insulation boards. A leaflet satisfying the requirements of the Control of Substances Hazardous to Health Regulations 1988 (COSHH) is available.

Product description

A technical data sheet is available, on request, for each product in the range.

PRODUCT INFORMATION

Other applications• Built-up roofing solutions over rigid insulation boards on profiled-metal decks for new-build and refurbishment

• High performance roof insulation boards for waterproofing systems on profiled-metal roof decks

• Fire protection layer under expanded polystyrene insulation boards on profiled-metal roof decks

• Transformation of standing seam cold roofs into waterproofed warm roofs

• Tapered insulation roofing systems

• Insulated car park decks for light and heavy vehicular traffic

• Thermal insulation under asphalt concrete for roof decks with pedestrian access, car parks for light vehicles, and roof gardens


WWW.SITEKINSULATION.COM

SALES OFFICE: ROUTE DE LAUTERBOURG | CS 90148 | 67163 WISSEMBOURG CEDEX | FRANCET +33 (03) 88 54 87 35 | F +33 (03) 88 54 87 39

Sitek reserves the right to amend specifications without prior notice. Whilst information contained in this publication is true and accurate to the best of our knowledge and belief, all liability for errors and omissions, damage or loss resulting herefrom, is hereby excluded. Recommendations for use should be verified as to suitability and compliance to actual requirements, specifications and any applicable laws and regulations. This publication is a guide and when the products and methods included herein are considered for purposes other than those described please contact Sitek.

Documents

BUILT-UP ROOFING SOLUTIONS WITH RIGID INSULATION BOARDS … · built-up roofing solutions with rigid insulation boards on concrete decks for new-build and refurbishment ... din 1055