Siderise CBX Flexible Void Barrier 2000mm x 1000mm x 40mm

The Siderise CBX Flexible Acoustic Void Barrier is a thin, flexible quilt consisting of a central high-density membrane and an 'anti-creep' layer, enclosed between foil-faced glass fibre insulation.

Designed for use in ceiling voids above partitions, it improves airborne sound separation and reduces flanking transmission.

Suitable for new builds, refurbishments, and remedial works, it provides a practical solution for enhancing acoustic performance with minimal disruption.

Features Flexible composite design – Thin, lightweight quilt ideal for free-hanging installation in ceiling voids above partitions Effective sound reduction – Standalone sound reduction of 33 dB RW, tested to BS EN ISO 140-3:1995 Remedial suitability – Flexible and thin, perfect for installations requiring limited disruption to existing suspended ceilings Fire performance – Classified EN 13501-1 B-s1, d0, meeting UK Building Regulations Approved Document B for wall and ceiling linings Versatile applications – Suitable for new builds, refurbishments, and remedial acoustic treatments