Overlay Systems: SoundLay Acoustic Underlay

Overlay Systems - SoundLay Acoustic Underlay

SoundLay Plus - Designed for timber floor applications (but can also be used for concrete floors) that require additional airborne and impact noise insulation. This high performance composite is a sandwich laminate of two layers of CMS WB7.5 acoustic barrier separated by a 6mm layer of CMS Class O acoustic foam.

Soundlay - Designed for concrete floor applications (but can also be used for timber floors) that require mainly impact noise insulation and to a lesser extent, airborne noise insulation. It is a two layer laminate, the upper being CMS WB7.5 acoustic barrier supported by a 6mm layer of CMS Class O acoustic foam.

The CMS SoundLay acoustic underlay system is an excellent under-carpet noise barrier reducing both airborne and impact noise for existing floors and is suitable for use in both commercial and residential applications, efficiently limiting the passage of noise through the floor.

The CMS SoundLay acoustic underlay system is ideal for new, retrofit or renovation projects in offices, homes and hotel applications as it is so easy to fit.

• Improves airborne sound insulation
• Suitable for all final floor finishes
• Reduces impact noise transmission
• Tested on basic floor constructions
• Thin, easy to handle tiles
• Flexible and easily cut
• Simple to install
• Cost effective

Dimensions
Standard sizes: 1200mm x 1000mm

The WB acoustic barrier and Class O PolyUrethane Non-Flammable acoustic foam are standard materials from within the CMS product range and are both fully proven acoustic products.

CMS Class O acoustic foam is a fully tested fire resistant foam that achieves the fire resistance requirements of British Building Regulations BS476: Part 6 & 7, satisfying the highest level Class O.

CMS WB acoustic barrier material is a high-density mineral loaded thermoplastic polymer. Black in colour, ecologically neutral and recyclable, it conforms to the following specifications:

The Soundlay sheets can be laid loose or bonded to the floor. When bonding to the floor, ensure that the surface is clean, dry and grease free and that the flooring is secured before bonding. An acrylic solvent based adhesive is recommended. The Soundlay sheets can be pushed up to the skirting board or wall; ensure a tight fit to prevent flanking of airborne noise.

For Carpets

CMS Soundlay is ideal for carpet applications and can be installed by using grippers or by bonding. Contact CMS Acoustics for advice on selection and fitting of carpet grippers. When bonding the carpet to the Soundlay material, ensure the adhesive is suitable for polyurethane materials, as shrinkage may result (it is recommended to bond the Soundlay sheets to the floor when bonding the carpet).

For Wooden Laminate Floors

Where a wooden laminated flooring surface is to be laid, it is recommended to bond a layer of 6mm T+G plywood to the Soundlay first.

For Vinyl Floors

Where vinyl floor coverings are to be used, again it is recommended to protect the covering by first laying a boarding of 6mm T+G plywood to the Soundlay material.

CMS Class O acoustic foam and CMS WB barrier are high performance materials that have been acoustically tested at a WAS certified independent acoustic test laboratory from which the following data has been compiled.

Airborne and Impact Sound Insulation Data

Airborne sound insulation of timber floors - R (C;C ) (example 1)

Impact sound insulation of timber floors - Ln,w (C) i

Doc E (July 2003) Building Regulations	Soundalay plus	Soundalay
62/64 dB (min)	55 dB	53 dB

Airborne sound insulation of timber floors - R (C;C )
(Ceiling with resilient bar (example 2)

Doc E (July 2003) Building Regulations	Soundalay plus
43/45 dB (min)	54 dB

Impact sound insulation of timber floors - Ln,w (G)
(Ceiling with resilient bar (example 2)