Acoustic & thermal performance

Party & Separating Walls

Party wall construction

High-performance separating walls

H+H aircrete provides a proven solution for party and separating walls, combining acoustic insulation with thermal performance for houses, flats and apartments. Aircrete systems can support compliance with UK Building Regulations while providing a reliable solution for modern residential construction.

Acoustic performance

Effective sound insulation between homes

H+H aircrete’s closed-cell structure provides excellent sound insulation relative to its weight, making it well suited to party and separating walls where controlling airborne sound transmission is essential. Aircrete wall constructions can meet the requirements of Approved Document E and have been successfully used in cavity separating walls for many years.

Why use aircrete for party walls?

Acoustic performance

Aircrete provides effective sound insulation, helping reduce sound transmission between adjoining homes.

Reduced flanking transmission

Using aircrete for adjoining flanking walls helps reduce sound transmission through the surrounding structure.

Building Regulations compliance

Aircrete party-wall systems are supported by Robust Details, helping meet the requirements of Approved Document E.

Thermal performance

Aircrete helps reduce heat loss through party-wall cavities and at junctions with external walls.

Building Regulations

Supporting Part E compliance

H+H aircrete party wall systems are supported by Robust Details, providing two routes to demonstrate compliance with Approved Document E: Pre-Completion Testing (PCT) or the use of approved Robust Detail constructions. This applies to both houses and apartments, helping streamline the design and approval process.

View Sound & Robust Details

Improving thermal performance

Preventing thermal by-pass

Fully filling party wall cavities with insulation and applying effective edge sealing helps prevent heat escaping through the cavity.

Reducing thermal bridging

Using aircrete for both party walls and external wall inner leaves can reduce heat loss at junctions by up to 50%, improving overall building performance.