Acoustilay sound insulation
Acoustilay sound insulation is the perfect product for sound insulating floors in domestic situations and can be used above most lath and plaster and resiliently fixed, double plasterboard ceilings to bring the overall floor/ceiling construction up to the standards of Building Regulations Approved Document E (2003).
- SRS offer a range of Acoustilay products to improve both impact and airborne sound insulation performance.
- Improves performance of timber and concrete substrates
- Suitable for use beneath a variety of floor finishes
- Easily cut and shaped
- Minimises increase in floor level
- Easily and quickly installed
- Can be used to meet Part E of the Building Regulations
- Can allow access to existing floor
- 100% Recyclable
- 100% Sourced and manufactured in the UK
Installation guidance - Carpet Finishes, Fitted with Gripper (domestic only)
Acoustilay perimeter strips are nailed or glued around the perimeter of the room with the barrier layer facing down and the acoustic seal, compressed by two thirds, to the wall or skirting board. Carpet gripper rods are nailed in place on top of the perimeter strip, raising them to the correct height to take the carpet. Acoustilay panels are tightly but ted up to the perimeter detail, and loose laid in brick bond pattern on to th e floor – care should be taken to ensure that no gaps occur between the Acoustilay and the Perimeter Strips or between the Acoustilay panels themselves.
Vinyl Flooring, Carpet Tile and Bonded Carpet Finishes (Domestic and Commercial)
When installing Acoustilay beneath vinyl flooring, carpet tiles or bonded carpet, it is necessary to install Acoustilay MDF between them due to the resilient nature of the product. Acoustilay MDF prevents point loading and join tdamage to the floor finish and also aids installation in the case of bonded carpet and carpet tile finishes.
The Acoustilay should be bonded to the sub-floor in brick bond pattern, using SRS Acoustilay Adhesive. Care should be taken that the Acoustilay is butted tight against the perimeter wall or skirting and that no gaps occur between the Acoustilay panels themselves. Acoustilay MDF is th en bonded to the top of the Acoustilay with SRS adhesive. The Acoustilay MDF boards need to be bonded to each other using a PVA adhesive on the T&G joint, and any such joint should be a minimum of 50mm away from any Acoustilay joint. An isolation gap of 5-10mm should be left between the wall and the Acoustilay MDF to avoid sound transmission flanking into the structure, the isolation gap should be filled with a flexible sealer. The floor finish should then be installed on top of the Acoustilay MDF as per the manufacturer’s instructions.
In areas where the floor covering is returned, a timber fillet, the same thickness as the Acoustilay, should be placed around the perimeter to create a solid edge.
Please note that timber based products are prone to expansion and contraction, as such SRS recommend that expansion gaps are introduced across the Acoustilay MDF, as well as at the edges, in large applications. Further details on expansion gaps can be found at the Timber Research and Development Association Trada website - if yo u have a large area to treat with Acoustilay MDF, SRS recommend that you contact TRADA for advice.
Decorative Timber Floor Finishes (Domestic)
In our experience, there is no issue installing Acoustilay 8 or 15 directly beneath solid wood and engineered timber floors in domestic installations. The Acoustilay should be installed as described in the ‘Carpet Finishes, Fitted with Gripper’ section, but without the perimeter strip detail – the Acoustilay should be butted tight up to the wall or skirting. As with all floating floor installations, no fixings should be allowed to penetrate the Acoustilay and an expansion gap should be allowed between the timber floor and the perimeter wall and services. This should be filled with a flexible, elastic sealer.
For confirmation of the suitability of your timber floor for use with Acoustilay, you should check with the floor finish manufacturer prior to installation. If the manufacturer feels that the resilience of the Acoustilay is excessive, or if the installation occurs anywhere other than a domestic environment, the timber floor sh ould be supported by installing a layer of Acoustilay MDF, bonded to the top of the Acoustilay. In this si tuation the full instructions of the ‘Vinyl Flooring, Carpet Tile & Bonded Carpet’ section should be followed.
The density of the open cell resilient layer in all the Acoustilay products is 135kg/m³.
The Acoustilay panels should first be cut to the appropriate size. Acoustilay should then be bonded to the tread of the stair and, if airborne insulation is required, bonded to the riser using SRS Acoustilay Adhesive. Acoustilay 3 can be formed around the nosing of the stair, as with conventional underlay.
The Acoustilay 8 and 15 must be installed with Acoustilay Perimeter Strips. The perimeter strip is nailed to the tread or riser as displayed in the next image diagram. For the nosing detail, a fillet of MDF, the same thickness as the Acoustilay should be installed beneath the nosing to ensure a uniform height.
Fixtures and Fittings
When installing Acoustilay it is import ant not to fix directly though the product into the sub-floor due to the risk of sound bridging. When items such as kitchen or bathroom units need to be securely fixed to the floor they should first be mounted and fixed onto an MDF plinth to the same height as the Acoustilay being used. Ideally the plinth will cover the footprint of the item and the Acoustilay can then be butted up to the MDF, maintaining a consistent floor level and providing secure fixing points. In the case of fitted cupboards and wardrobes, Acoustilay should be used to treat floors inside the cupboard to prevent flanking of airborne sound.
In all non domestic environments, such as offices, hospitals and schools, it is recommended that Acoustilay MDF is installed onto the Acoustilay regardless of the floor finish. Installing Acoustilay MDF, as detailed in the ‘Vinyl Flooring, Carpet Tile & Bonded Carpet’ section above, will eliminate the risk of the carpet rucking under wheeled furniture and protect both the floor finish and Acoustilay from heavy traffic wear.
The installation guidance in this datasheet is given in good faith and to the best of our knowledge. However, due to the number of floor finishes available, the final decision regarding the compatibility of any floor finish installed directly onto Acoustilay must remain the responsibility of the flooring contractor/installer or purchaser. If in any doubt, please seek advice from the floor finish manufacturer or contact us.
Acoustilay high performance acoustic underlay - Typical floor installation
Acoustilay installed with MDF panels for wood floors