Building Regulations require that cavities and concealed spaces in the structure or fabric of a building are sub-divided or sealed by means of cavity barriers or fire-stopping to restrict the hidden spread of smoke and flames. This is of prime importance since many buildings are honeycombed with concealed cavities and voids within the roofs, floors, and walls. A A 30 Sector Office / commercial Education Custodial High-rise multi-occupancy Retail Healthcare Housing Auditoria Sport and leisure Industrial Apartment buildings 3 3 Applications Designed for the sub-division of cavities in a wide range of situations. 3 3 3 3 3 3 3 3 3 10 OR
Glasroc F MULTIBOARD Thickness 6, 10, 12.5mm Width 1200mm Board products Framing products Isover Cavity Barrier Cavity closure in external walls. Available in widths to suit. Timber framing Length (by others) To suit Fixing and finishing products Insulation products Gyproc FireLine 1 Thickness 12.5mm Width 1200mm Gyproc Drywall Screws For fixing boards to Gypframe metal framing less than 0.8mm thick (‘ I ’ studs less than 0.6mm thick). Gyproc Drywall Timber Screws For a positive direct fix of boards to timber joists. Stone mineral wool (by others) For fire-stopping. Gyproc WallBoard 1 Thickness 15mm Width 1200mm 1 Moisture resistant boards are specified in intermittent wet use areas, e.g. shower cubicles. Gypframe Folded Edge Standard Floor & Ceiling Channels 50 FEC 50 Channel available in 3600mm only. Cavity fire barriers 410 System components Always use genuine branded British Gypsum components to qualify for SpecSure ® lifetime warranty L I F E T I M E S Y S T E M W A R R A N T Y S P E C S U R E 10 Isover APR 1200 25mm, for improved acoustic performance. Gypframe Length 48 S 50 ‘C’ Stud 2400, 2700, 3000mm 3600mm Gypframe Length GA1 Steel Angle 2900mm
411 T 0844 800 1991 F 0844 561 8816 E [email protected] Cavity fire barriers 10 Please refer to section 3 - Basic principles of system design for general guidance Installation overview The procedure for fixing timber or metal framing to the ceiling / structure, and for fixing Gyproc and specialist boards to form the cavity barrier, is in line with British Gypsum’s normal drylining recommendations. Please refer to GypWall CLASSIC metal stud partitions, or timber stud partitions and separating / compartment walls in the current British Gypsum SITE BOOK , available to download from Design Planning - key factors The maximum distance between barriers must be appropriate to the location of each cavity. Also, due consideration must be given to the class of surface exposed within the cavity. It is also important that smoke and flames are restricted from passing from any cavity in a building element directly into a room or another cavity. Therefore, a cavity must be closed by a cavity barrier at every junction with another cavity. Any cavity contained within an element is also required to be closed by a cavity barrier around the perimeter of any opening through the element. The closure of cavities may already be provided by the construction itself, e.g.
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