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Cavity Wall Barrier / Ventilated Cavity Wall Barrier

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Brand: Firewise
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Description
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A lightweight and easy-to-use cavity wall barrier available in non-ventilated and ventilated versions and in various widths, for use in cavities in block or brick walls or between brick wall and timber-framed buildings. It can be fixed across the cavity or it can be self-supporting.

There are six types of cavity wall barrier: -

Non-ventilated wall barrier (WB) is made from impregnated cloth and galvanised wire mesh and is ideal for fixing to cavity walls before fixing door/ window frames.

Ventilated wall barrier (VWB) is made from intumescent material adhered to impregnated cloth with reinforced kraft paper and galvanised wire mesh inside.

In response to requests for a non- ventilated wall barrier like WB but with a facility to let moisture out and keep smoke out of the cavity, this can be achieved with the VWBG barrier consisting of the standard WB barrier but with rubber grommets and plastic tubes coming out of the seal, through

the brick/block joints to the outside.

Non-ventilated wall barrier sponge (WBS). Compress the fireproof sponge into cavity. Can be adhered with intumescent adhesive (IA).

Ventilated wall barrier sponge (VWBS). Compress the fireproof sponge into cavity. It can have the following vent patterns: pattern A has one row of small vents, pattern B has two rows of small vents, and pattern F has one row of large vents. Can be adhered with intumescent adhesive (IA).

Non-ventilated waterproof Thermal Cavity Barrier (TCB) offers both fire protection and effective thermal protection around window and door apertures.

Tested to BS476 Part 22 (1987), achieving up to 104 minutes integrity and 100 minutes insulation. Also tested to BS476 Part 22 (1987) achieving 132 minutes. Tested to BE EN1363-1.

Technical PDFs
Cavity Wall Barrier.pdf
Date Added: 17/08/2017
File Type: pdf
Description

A lightweight and easy-to-use cavity wall barrier available in non-ventilated and ventilated versions and in various widths, for use in cavities in block or brick walls or between brick wall and timber-framed buildings. It can be fixed across the cavity or it can be self-supporting.

Specification

There are six types of cavity wall barrier: -

Non-ventilated wall barrier (WB) is made from impregnated cloth and galvanised wire mesh and is ideal for fixing to cavity walls before fixing door/ window frames.

Ventilated wall barrier (VWB) is made from intumescent material adhered to impregnated cloth with reinforced kraft paper and galvanised wire mesh inside.

In response to requests for a non- ventilated wall barrier like WB but with a facility to let moisture out and keep smoke out of the cavity, this can be achieved with the VWBG barrier consisting of the standard WB barrier but with rubber grommets and plastic tubes coming out of the seal, through

the brick/block joints to the outside.

Non-ventilated wall barrier sponge (WBS). Compress the fireproof sponge into cavity. Can be adhered with intumescent adhesive (IA).

Ventilated wall barrier sponge (VWBS). Compress the fireproof sponge into cavity. It can have the following vent patterns: pattern A has one row of small vents, pattern B has two rows of small vents, and pattern F has one row of large vents. Can be adhered with intumescent adhesive (IA).

Non-ventilated waterproof Thermal Cavity Barrier (TCB) offers both fire protection and effective thermal protection around window and door apertures.

Additional Information

Tested to BS476 Part 22 (1987), achieving up to 104 minutes integrity and 100 minutes insulation. Also tested to BS476 Part 22 (1987) achieving 132 minutes. Tested to BE EN1363-1.

Product Downloads
Cavity Wall Barrier.pdf
Date Added: 17/08/2017
File Type: pdf

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