BUILDING SYSTEMS
Concept Conversions Ltd Thermal , Acoustic & Fire Solution Manufacturers
Data Sheet 1016
INTUMESCENT CAVITY BARRIERS
DESCRIPTION :
CCL Intumescent Cavity Barriers are flexible strips of high density , thermally expandable , graphite based mat enclosed in aluminium foil .
PURPOSE : CCL Intumescent Cavity Barriers are designed to prevent fire penetration in cavities and gaps where there is a need for continuous ventilation . In the event of a fire , the intumescent reaction is triggered causing the material to expand unidirectionally to form a highly effective barrier .
BENEFITS :
Allows continuous free air space Meets Building Regulations Simple to install Unaffected by moisture Maintenance free
Specification
Fixing : CCL Intumescent Cavity Barriers are designed for use in cavities typically 15mm to 50mm wide *. They are supplied with double sided tape pre - fixed to one face . This is to enable the installer to easily position the barrier prior to mechanical fixing .
Dimensions
CB30
2 . 3 x 30 x 1000mm
CB50
4 . 6 x 50 x 1000mm
CB70 4 . 6 x 70 x 1000mm Different lengths are available upon request
The barriers should be fixed using panel pins , staples or screws with a maximum head diameter of 6mm .
All fixings should be located along the centre of the barrier , minimum 4 fixings per metre length .
Standards & Performance :
CCL Intumescent Cavity Barriers have been independently tested adopting procedures and criteria from BS476 : part20 : ( 1987 ) and achieved 1 hour fire resistance in a timber frame and up to 2 hours fire resistance in a non combustible construction . The correct use of a CCL Intumescent Cavity Barrier will exceed the requirement for a 30 minute cavity fire barrier as defined in Table A6 of Appendix A to Approved Document B of the Building Regulations 1991 .
Joints in the barrier should be tightly butted to form a continuous length .
* For cavities over 50mm or for rainscreen or façade applications , please contact our sales department or refer to our data sheet ' Rainscreen Cladding Barrier '
sales @ concept - conversions . co . uk
01933 - 673100
www . concept - conversions . co . uk
Unit 13 , Trinity Centre , Park Farm Industrial Estate , Wellingborough , Northants , NN8 6ZB .
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