Fire Rated Cavity Barriers

Fire rated barriers for eliminating damp and cold bridging around doors windows and sills.

Fire rated cavity barriers. Clause 19 2 of bs 9991 and cites 0 5mm thick steel and 38mm timber as being a suitable cavity barrier materials for the perimeter of windows advice and substantiation should be sought from a fire engineer prior to any decision regarding omitting the 15 min fire. 60 minute fire rated cavity closer. Throughout the life of the building the. The material provides compartmentation.

Cavity barriers are pieces of fire stopping material. This means that both the flames and heat cannot be transferred to other compartmental areas. These are used to slow the spread of heat smoke and fire. They are fitted within the cavity of a building at each floor horizontally and party wall in a verticle position.

It is designed to replace more traditional cavity barriers such as mineral wool cavity barriers or cavity socks or timber battens which are prone to poor installation which can render them ineffective in a fire situation. Cavity closers are also used to seal cavities but unlike cavity barriers cavity closers typically consist of proprietary insulated closer or trim which is not fire resistant. To provide thermal insulation and prevent cold bridging to provide a dpc at external doors window jambs or sills. Both documents also allow cavity barriers to provide only 30 min integrity.

Fire cavity barriers fire stops create separation within concealed spaces which prevents fire from spreading from one area of a building to another. Fire rated cavity barriers maintaining cavity line integrity performance horizontal and vertical sealed spaces often need to incorporate compartments also called cavity barriers. To close the cavity at external doors window jambs and sills. Building regulation requirements necessitate that concealed spaces and cavities in the structure or fabric of a building are sealed or sub divided using cavity barriers to restrict the hidden spread of smoke and flames.