The VWB/M rodent protection cavity barriers, designed for the bottom edge cavity of timber-framed buildings, outer cladding sections. Used to stop fire penetration getting behind the boards and wall face, also allowing for both air flow & moisture release. This cavity barrier also offers protection from rodents getting into the cavity.

Additionally, these barriers are available in two series of ventilation holes. Pattern A for 1 line of ventilation holes. Pattern B for 2 lines of ventilation holes.

Supplied in 920mm lengths with standard sizes of  50mm, 80mm, 100mm, 120mm.

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Cavity Barriers are pieces of fire-stopping material. They fit within the cavity of a building at each floor horizontally and party wall in a verticle position. The material provides compartmentation. 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. Subsequently closing when the intumescent expands.

Our Cavity Barrier range at Envirograf® offers superb protection to your building by providing fire stopping. Explore the Cavity Barrier range online.