Cavity Wall Fire Barrier

The failure to install cavity barriers in timber frame buildings poses a significant fire risk and has been reported as a key reason for the rapid spread of fire in a block of flats in worcester.

Cavity wall fire barrier.

With fb cavity barrier securo has developed a new set of applications specially designed for establishing vented fire barriers in voids or cavities behind the cladding on façades or inside fire rated walls and floors. Why are cavity barriers needed. The material provides compartmentation. Aim wall cavity fire barrier is made from foil faced high density rockwool stone wool and is suitable for use in all cavity walls as well as for fire stopping between a curtain wall system and a concrete floor slab.

Both documents also allow cavity barriers to provide only 30 min integrity. 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. Cavities are subject to building regulations and most should be fitted with fire barriers to prevent the spread of fire via the open cavity. They work by sealing off the gaps in a cavity during a fire.

Cavity barriers c06 s07 fire separation within concealed spaces. This is because the materials used in cavity barriers are sensitive to high temperatures and will expand when exposed to a fire. This means that both the flames and heat cannot be transferred to other compartmental areas. By using these simple solutions and ensuring they are installed correctly the safety levels of a building can be dramatically increased and the.

Cavity barriers are passive fire protection elements that prevent flames and smoke from spreading via the walls. These wall cavities can form unrestricted chimneys which if left unprotected can allow fire to spread both vertically and horizontally around a building. The solution is a cavity fire barrier that allows the wall cavity to perform as designed while enhancing fire protection. The unseen spread of fire within wall cavities has been an area of significant interest and debate recently and the benefits that cavity barriers provide have been demonstrated time and time again.

This slim design fire barrier only intrudes 4mm into the wall cavity leaving it open for all practical purposes until fire enters the cavity. The low profile intumescent design also allows brickwork to be laid unobstructed. The barrier prevents the passage of flame and smoke within the cavity it fills for a range of fire rating periods see fire. Regulatory requirements demand 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.