SIPs offer excellent acoustic performance, with sound resistance levels varying depending on the build-up of the system, the external finish applied and the thickness of the insulating foam core. SIPCO can offer advice on the best system components to achieve acoustic goals. If sound insulation performance needs to be improved, the use of acoustic-rated plasterboard in multiple layers is normal. An acoustic consultant can assist in determining specifications and performance requirements.
- BS EN ISO 140-3 : 1995 Acoustics — Measurement of sound insulation in buildings and of building elements. Laboratory measurement of airborne sound insulation of building elements
High Levels of Acoustic Performance
There are no specific requirements for the sound insulation performance of external walls within national Building Regulations, only considered when a significant external noise source is present (main road, rail line or airport etc.). If this is the case, the levels of prevailing ambient noise will dictate the ultimate performance of external facades. In most cases, window units and any trickle ventilators will be the dominant point of noise ingress into a building.
Building Regulations specify airborne sound insulation performance targets for internal walls, dependent on the property location. Airborne sound insulation targets are expressed as Airborne Sound Reduction (Rw) based on laboratory test data. These walls are not subject to pre-completion sound insulation testing on site. Building Regulations for separating/party/compartment walls vary across the UK, but all specify an airborne sound insulation performance target. These are pre-completion testing performance criteria and are subject to testing on-site.
Building Regulations’ requirements for intermediate, separating, party and compartment floors vary across the UK. SIPCO can offer guidance and technical support to help achieve acoustic performance objectives and meet testing requirements.