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Envirograf Cavity Strip Barrier Envirograf Cavity Strip Barrier
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Cavity Barriers

£12.81
£12.81 (excl VAT)
A flexible, PVC and foil-clad intumescent strip with self-adhesive backing to adhere it to walls. High expansion intumescent will lock against the external side of the internal wall in a fire, giving full protection...
Envirograf Thermal Fire Cavity Barrier Envirograf Thermal Fire Cavity Barrier
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Cavity Barriers

£6.64
£6.64 (excl VAT)
Thermal Fire Cavity Barrier comprising a flexible fire proof sponge 30mm deep, fixed to a thin foil faced intumescent strip. The system is completely moisture resistant. The sponge rests inside the cavity and the foil...
Showing 1-10 of 10 item(s)

Cavity Barriers are pieces of fire stopping material. They are fitted within the cavity of a building at each floor horizontally and party wall in a verticle position. The material provides compartmentation. This means that both the flames and heat cannot be transferred to other compartmental areas. Throughout the life of the building, the Cavity Barrier will remain fixed in place. In the event of a fire, the intumescent material expands and seals off the gaps. Additionally, the horizontal barriers allow for a ventilation gap within the cavity. This will be closed when the intumescent expands.

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