SIDERISE ceiling void barriers · SIDERISE cavity void barrier guide INTERIORS: CEILING VOID BARRIERS 6 Product Type Noise Control Fire Safety Cut to Size Cut on Site Air Plenum Fibrous

Acoustic, fire and thermal insulation specialists

INTERIORS: CEILING VOID BARRIERS Version 2 : Dec 2018

Making your world

Making your

world a quieter

place.

High performance acoustic barriers designed for use in ceiling voids.

SIDERISE ceiling void barriers

SIDERISE insulation solutions for interiors

NOISE CONTROL - A KEY FACTOR

Ask people what they most want at work and they will

probably say a bit of peace and quiet. We may moan about

the noisy neighbours at home but when it comes to the

working environment we complain. The most common

demands are for improved privacy for discourse and reduced

disturbance from intrusive noise.

Noise control has become a key factor for consideration

by those responsible for building design. The designers

challenge is to create an environment that meets an

occupant’s specified acoustic needs. Proper acoustics, the

unobtrusive sum of all sounds, is the key objective for a

comfortable environment.

DELIVERING EXCEPTIONAL ROOM-TO-ROOM SOUND REDUCTION

With over 40 years of expertise we can deliver exceptional

room-to-room sound reduction performance for building

interiors. We provide interior insulation solutions for:

• Offices

• Healthcare

• Education

• Retail

• Leisure and Sports

• Industry

SIDERISE products are made from robust sustainable

materials, and we are always happy to provide customers with

bespoke acoustic and fire solutions to suit their needs.

If you have special requirements for your project our Interiors

technical team can provide you with acoustic advise so you

can ensure that the overall performance criteria for the

project is met. You can also enjoy peace of mind knowing

that our solutions will satisfy your passive fire protection

requirements.

INTERIORS: CEILING VOID BARRIERS

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SIDERISE has over 40 years of experience in designing, developing and manufacturing acoustic

and fire insulation solutions for building interiors.

One Canada Square, London, UK30 St Mary Axe, London, UK

Wales Millenium Centre, Cardiff, UK

New International Airport, Doha, Qatar

Cleveland Clinic, Abu Dhabi, UAECleveland Clinic, Abu Dhabi, UAE

St David’s Hotel, Cardiff, UK

SIDERISE ceiling void barrier range

‘CROSS-TALK’ - A COMMON PROBLEM

The sound separation achieved between adjoining rooms or

offices is often severely limited by ‘cross-talk’ via a common

void. This occurs when the transmission loss associated with

this sound path is less than that provided by the primary

separating element, for example, a partition.

Voids affected by ‘cross-talk’ include:

• Suspended ceiling voids at partitions

• Access floor voids below partitions

• Cavities at floor slab edges to façades

RESOLVING THE ISSUE OF ‘CROSS-TALK’

The inclusion of products from the SIDERISE ceiling void

barrier range can normally remedy the problem for the

conditions described above. Where a common voids sits

above the partition it is usual to install the product directly in

line with the partition.

The Sound Reduction Index or SRI (Rw) of the cavity barrier is

not normally required to equal that of the partition itself. This

is due to the presence of other obstructions in the room-to-

room sound path (e.g. the suspended ceiling). The individual

performance of the barrier need only be sufficient to correct

the shortfall between the partition and the untreated cross-

talk path.

SUSPENDED CEILING SYSTEMS

The actual value of these paths can vary substantially.

For ceiling voids, 15-40dB Dnf,w (DnCw) would usually be

associated with most suspended ceiling systems., An acoustic

engineer can assess a minimum SRI value for the cavity

barrier with knowledge of either the existing overall path

value or details of the individual path obstructing elements.

The SIDERISE technical department can assist in this area.

OPEN-CELL AND PERFORATED SUSPENDED CEILINGS

Occasionally conditions arise that demand substantially

higher SRI values of the cavity barrier, such as ceiling voids

formed by open-cell or substantially perforated suspended

ceilings. Twin barrier or multiple element arrangements can

then be employed to accommodate almost all possible sound

performance criteria.

Rw values are for the barrier arrangement alone. Room-to-

room performance (DnCw) would normally be significantly

higher.

Version 2 : Dec 2018

T: +44 1473 827695 | [email protected] | www.siderise.com 3

The SIDERISE ceiling void barrier range is designed to effectively reduce sound transmission via

hidden voids resolving the common issues that ‘cross-talk’ causes.

Fig 1. Sound Transmission Path

SIDERISE cavity barrier product range


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Key features

• Primary function - acoustic

• Acoustic performance (Rw): 29 - 33dB

• DnCw up to 55dB

• Air plenum

Key features



• DnCw up to 50dB

Key features - CVB/LAM



• DnCw up to 45dB

• Fire performance: 30 - 60 minutes

• Air plenum

Key features - CVB/P



• DnCw up to 55dB

• Air plenum

Market leading acoustic insulation systems for building interiors that help resolve the issue of

‘Cross-Talk’ and offer exceptional room-to-room sound reduction.

SIDERISE CBX

Description: Flexible acoustic barriers

for suspended ceilings. Flexible

composite quilts designed for free

hanging in ceiling voids. A fibrous based

product that contains a high mass core

Application: Fixed using angle and

strap. Vertical joints are treated by

means of overlaps and use of pins and

tape.

SIDERISE FLX

Description: Flexible acoustic barriers

for suspended ceilings. Flexible

composite sheets designed for free

hanging in ceiling voids. A foam based

composite product that contains a high

mass core.

Application: Fixed using angle and strap. Vertical joints are treated by means of overlaps and fixing strap with suitable through fixings.

SIDERISE CVB

Description: Acoustic void barriers

for suspended ceilings. Semi-rigid

composite sheets designed for free

standing in ceiling voids. A fibrous

based product that is available with and

without a central high mass core.

Application: Dependant on void

height and type, fitted free standing,

compression fixed with use of either

stabilising spikes or stabilising angle

at the head. Vertical joints are butt or

rebated and sealed with foil tape.



Key features



• DnCw up to 55dB

• Air plenum

Key features

• Primary function - fire


• DnCw up to 45dB


• Air plenum

Key features

• Primary function - fire


• DnCw up to 35dB


• Upgradable with SIDERISE AVC

SIDERISE AVC

Description: Acoustic void closures for

tops of walls. Die-cut or sheet supplied,

semi-rigid composite sheets designed

for use in small and/or irregular shaped

cavities in ceiling voids. A foam based

product that contains a central high

mass core.

Application: The product is installed as

an ‘interference fit’.

SIDERISE SC

Description: Cavity barriers and fire stops for suspended ceilings. Semi-rigid composite sheets designed for free standing in ceiling voids. A fibrous based product that does not contain a

central high mass core.

Application: Compression fitted with use of stabilising spikes. Vertical joints are butt or rebated and sealed with foil tape.

SIDERISE TW-PP

Description: Fire stops for profiled decks.

Shape cut or sheet supplied, semi-rigid

sheets designed for use in small and/or

irregular shaped cavities in ceiling voids.

A fibrous based product that contains a

central high mass core.

Application: The product is installed as

an ‘interference fit’.

SIDERISE cavity void barrier guide


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Product TypeNoise

ControlFire

SafetyCut to Size

Cut on Site

Air Plenum

FibrousFire

Performance (mins)

Acoustic Performance

(Rw)

DnCW up to

CBX 29 - 33dB 55dB

FLX 23 - 27dB 50dB

CVB/LAM 30 - 60 23 - 25dB 45dB

CVB/P 28 - 31dB 55dB

AVC 35 - 44dB 55dB

SC 30 - 120 23 - 25dB 45dB

TW-PP 60 - 120 16 - 20dB 35dB

CBX + CVB/P Up to 49dB 60dB

Quick comparison of suitablity and performances.



Generic ceiling type

SIDERISE Cavity Void Barrier upgrade options by type

SC-FS60 (23dB Rw)

SC-FS120 (25dB Rw)

CVB/5 (28dB Rw)

CVB/10 (31dB Rw)

CB5/P (29dB Rw)

CB10/P (33dB Rw)

CVB/10 + CB10/P (49dB Rw)

Metal Pan – Fleece (18dB DnCw/DnFw)

33 33 33 34 35 37 46

Metal Pan – Pad to rear

(28dB DnCw/DnFw)38 39 39 41 41 42 48

Metal Pan – Pad to rear c/w recessed

lighting etc. (24dB DnCw/DnFw)

34 35 35 37 37 38 44

MF Ceiling Tile (35dB DnCw/DnFw)

43 44 44 44 46 47 50

MF Ceiling Tile c/w recessed lighting

etc. (27dB DnCw/DnFw)

37 38 38 40 40 41 47

Plaster Board ceiling

(39dB DnCw/DnFw)46 47 47 47 48 51 53

Plaster Board ceiling c/w recessed

lighting etc. (28dB DnCw/DnFw)

38 39 39 41 41 42 48

NOTE: The analysis is based on the following assumptions:

• Negligible transmission through partition wall itself

• The ceiling void depth is 600mm (a typical value)

• No absorptive soffit lining (higher performances would result if present)

• The ceiling is discontinuous over the partition wall head

• Site installation (to a reasonably good standard) is allowed for.

• The predicted performances are rounded to integer values

DnCw performances of various ceiling constructions with upgrade options.

Ceiling and Vertical Barrier combination performance guide

Further information

PRODUCTS AVAILABLE

The following SIDERISE products for use in suspended ceiling

voids are available and can also be specified using NBSPlus:

• SIDERISE CBX flexible acoustic barriers

• SIDERISE FLX flexible acoustic barriers

• SIDERISE CVB (CVB/LAM, CVB/P) acoustic void barriers

• SIDERISE SC cavity barriers and fire stops

• SIDERISE AVC acoustic void closures for tops of walls

• SIDERISE TW fire stops for profiled decks

• SIDERISE foil tape: FT 120/45

AVAILABLE CPDS

Contact SIDERISE for further information on our CPDs:

• SIDERISE CVB range: Use and Specification for the

Suspended Ceilings Industry

• SIDERISE Acoustic Products & Performance - Information

for Noise Consultants

Technical & sales support

Contact our team for sales and

technical support:

SALES ENQUIRIES

T: +44 1473 827695

E: [email protected]

ORDERING AND CUSTOMER SERVICE

T: +44 1473 827695


TECHNICAL SUPPORT

T: +44 1473 827695


SIDERISE GROUPLady Lane Ind. Est. Hadleigh, UK, IP7 6BQT: +44 1473 827695F: +44 1473 827179E: [email protected] W: www.siderise.com

Documents

SIDERISE ceiling void barriers · SIDERISE cavity void barrier guide INTERIORS: CEILING VOID BARRIERS 6 Product Type Noise Control Fire Safety Cut to Size Cut on Site Air Plenum Fibrous