CCL Masonry Stop Socks are designed to prevent fire penetration and minimise sound transmission through masonry cavity walls of buildings.

Benefits

Fire, Thermal and Acoustic solution
Simple to install
Water repellent
Maintenance free

CCL Masonry Stop Socks are supplied in 1200mm lengths and are factory cut to suit cavity widths from 50mm to 150mm.

Cavities wider than 150mm can be accommodated, although CCL Firestop Slab may be a more suitable application.

CCL Masonry Stop Sock should be compression fitted as the brick and block work progresses. In vertical applications, we recommend building up the blockwork first, then completing several courses of brickwork before installing the barrier. In horizontal applications, we recommend building the brickwork and blockwork up to the layer where the barrier is to be sited. Allow the mortar to set before friction – fitting the barrier into place. Lengths of CCL Masonry Stop Sock should be tightly butt jointed, ensuring there are no gaps. At the end of a run or at corner locations, the barriers should be cut to the required length and tightly butt jointed ensuring there are no gaps. Do not attempt to bend the barriers in corner locations or overly squash them to fit the cavity.

The mineral wool core of a CCL Masonry Stop Sock achieves a fire classification of Euroclass A1 as defined in BS EN 13501-1.

The correct use of a CCL Masonry Stop Sock will exceed the requirement for a 30 minute cavity fire barrier as defined in Approved Document B of the Building Regulations 2010 (2019 edition). Table B3 of Appendix B. Detailed performance information can be found on data sheet 1018

The product has been independently tested adopting procedures and criteria from BS476 & BS EN 1366. Approved Document B of the Building Regulations 2010 (2019 edition), Section 8 details the requirement and purpose for which a cavity barrier should be installed.

CCL Masonry Stop Socks comply with the robust details accepted to provide a solution which satisfies the Approved Document E 2003 (2015 edition) of the Building Regulations relating to the transmission of sound.