Separating Party Wall Insulation

APPLICATION OVERVIEW:
BUILT-IN

In a separating party wall, insulation is required, and should be fully-filled, for thermal performance to prevent heat loss through thermal bypass, and also for acoustic performance to reduce the noise transfer between dwellings. 

In this application, the mineral wool insulation is installed as the walls are built, with slabs being friction fitted between the inner and outer leaves of the wall and in between wall ties. 

In a party wall, it is important to use a build-up that features within a range of constructions registered in the Robust Details Handbook, reducing the need for on-site acoustic testing. 

APPLICATION OVERVIEW:
BLOWN-IN

In a separating party wall, insulation is required, and should be fully-filled, for thermal performance to prevent heat loss through thermal bypass, and also for acoustic performance to reduce the noise transfer between dwellings. 

In this application, the mineral wool insulation (blowing wool) is injected into the wall cavity via a series of pre-drilled holes once the walls are fully built. 

In a party wall, it is important to use a build-up that features within a range of constructions registered in the Robust Details Handbook, reducing the need for on-site acoustic testing. 

Why Mineral Wool?

Mineral wool is easier to install correctly than other insulants such as rigid boards because it adapts to any slight imperfections in the substrate and knits together, eliminating any air gaps.

Evidence shows the absence of air gaps is crucial to achieving real performance in the relevant application.