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Data Sheet 1001
MASONRY STOP SOCK
Diagram A
DESCRIPTION :
CCL Masonry Stop Sock consists of a length of flexible mineral wool slab fully enclosed in polythene .
PURPOSE : CCL Masonry Stop Socks are designed to prevent fire penetration and minimise sound transmission through masonry cavity walls of buildings .
BENEFITS :
Meet full Building Regulations Fire , thermal and acoustic solution
Simple to install Water repellent Maintenance free
Specification
Fixing : CCL Masonry Stop Socks are supplied 10mm to 15mm thicker than the cavity in which they are to be installed and are friction fitted during the brickwork process . During vertical installation it is advisable to place a length of damp proof course between the cavity stop sock and the outer leaf . During horizontal installation it is advisable to protect the Masonry Stop Sock with a damp proof course or cavity tray immediately above with a minimum 100mm upstand . Special attention must be paid to the joints to ensure these are very closely butted . Cavity barriers may fail at the joints if a gap is left .
Dimensions
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 .
Standards & Performance :
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 . The product has been independently tested adopting procedures and criteria from BS476 : part20 :( 1987 ) and achieved a 1 hour fire resistance . Further independent testing and assessment has concluded that increasing the width of the barrier an increase the fire resistance up to 4 hours . 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 .
The Cavity Barrier should fully fill the whole cavity as shown in Diagram ( B ) below .
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Barriers should be tightly butt jointed . The Cavity Barrier should fully fill the whole cavity as shown in Diagram ( B ) to the left .
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Diagram B
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