Mansard wall acoustic upgrade by GA Interiors

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GA Interiors recently completed a mansard wall acoustic upgrade designed to significantly enhance sound insulation and overall acoustic performance within the space. The works were carefully planned and delivered to reduce both airborne and impact noise, creating a quieter and more comfortable internal environment.

Scope of Works

The project involved upgrading an existing hollow timber mansard wall using a fully decoupled acoustic system. This approach was selected to minimise vibration transfer and maximise sound absorption, ensuring a high-performing and compliant solution.

Construction Build-Up

The upgraded mansard wall was constructed using a multi-layered system specifically designed for superior acoustic performance. The build-up included:

Two layers of 15mm Soundbloc F plasterboard installed as overboarding
Counter battens to support the acoustic system
Furring channels fixed on Isomax acoustic clips with rubber isolation to reduce vibration transfer
70mm Rockwool RW3 acoustic insulation
Vapour control layer (VCL)
Retention of the original construction, incorporating two layers of 15mm Soundbloc F plasterboard

This fully decoupled system works by absorbing sound energy and isolating structural vibrations, resulting in a substantial reduction in noise transmission.