Knauf Earthwool Acoustic - Underfloor Mineral Wool Batts
Knauf Earthwool Acoustic - Underfloor Mineral Wool Batts provides a high level of sound absorption, whilst also improving the thermal and fire performance of the wall, floor or partition. Using glass mineral wool as a sound absorbent layer in partitions and floors significantly improves their acoustic performance, whilst only adding minimally to the overall mass of the structure. In partitions glass mineral wool complements the plasterboard linings by absorbing airborne sound in the cavity and reducing reverberation, it is particularly effective at preventing the hollow sound that can occur in partitions with unfilled cavities.
Knauf Insulation mineral wool products made with ECOSE® Technology benefit from a formaldehyde-free binder, which is up to 70% less energy intensive than traditional binders and is made from rapidly renewable bio-based materials instead of petroleum-based chemicals. The technology has been developed for Knauf Insulation’s glass and rock mineral wool products, enhancing their environmental credentials without affecting the thermal, acoustic or fire performance. Insulation products made with ECOSE Technology contain no dye or artificial colours – the colour is completely natural.
Earthwool Acoustic Roll is manufactured in accordance with BS EN 13162, EN 16001 Energy Management Systems, OHSAS 18001 Occupational Health and Safety Management Systems, ISO 14001 Environmental Management Systems, and ISO 9001 Quality Management Systems, as certified by Bureau Veritas.
Earthwool Acoustic Roll is odourless, rot proof, non-hygroscopic, does not sustain vermin and will not encourage the growth of fungi, mould or bacteria.
Earthwool Acoustic Roll represents no known threat to the environment and has zero Ozone Depletion Potential and zero Global Warming Potential.
Handling and storage
Earthwool Acoustic Roll is easy to handle and install, being lightweight and easily cut to size, where necessary. It is supplied enclosed in polythene which is designed for short term protection only. For longer term protection on site, the product should be stored either indoors, or under cover and off the ground. Earthwool Acoustic Roll should not be left permanently exposed to the elements.
Available dimensions per package:
||Area per pack (m²)
Prior to installation of the system, the following considerations must be taken into account:
- all invasive fittings must be properly treated;
- all structural wall should be sealed;
- the sub-floor, which must be clean and dry, should be covered with proper insulation layer consisting of mineral wool insulation, added between the floor joists;
- the entire structure needs to be watertight;
- the product must be kept and stored in dry conditions.
Installation should begin with at the furthest point from the entrance, while the decking must follow a “stretcher-bond” pattern. The boards are pushed over the joints which have been treated with a proper adhesive added both on top of the tongue and bottom of the groove. It is advised that stud partitioning should be built from the sub floor and that flanking strips should be added for improved insulation performance of the walls and floors. Once the entire system has been installed, the boards should be protected from potential damage with a proper finish layer added on top. All skirting must be isolated from the floor surface and new ceiling boards installed prior to installing the system, in order of avoiding potential flanking transmission.
When applied in bathroom and kitchen areas, some additional considerations apply. All rigid plumbing connectors that go through the system should be properly insulated from floating and sub floor by adding some flexible sealant to the hole around the services perimeter, cut up to 10mm wider. In order of supporting higher loads, additional support noggins should be installed between the joists, which is also applicable when installing underfloor heating systems in bathrooms and kitchens.
Video presentation from Knauf: