NVFB-WB Cavity Fire Barrier
Verified by manufacturer 9 days ago
In the event of a fire, the NVFB-WB provides non-ventilated, full fill fire protection to restrict the spread of fire in external wall cavities.
Application
As a cavity barrier, within external wall cavities requiring permanent non-ventilated performance (NVFB-WB vertically and horizontally), to reinstate fire resistance performance of uninsulated cavities of up to 50 mm in fire conditions.
Description
The NVFB-WB is a highly compressible, A1 fire rated stone wool cavity barrier. This cavity barrier is tested to BS EN 1366-4 with specific fibre orientation that enables effective sealing of cavities even where an irregular outer surface is encountered such as behind lapped cladding.
In the event of a fire, the NVFB-WB provides non-ventilated, full fill fire protection to restrict the spread of fire in external wall cavities.
Features and benefits:
- “Full fill”/ “closed state” cavity fire barrier.
- BS EN 1366-4 third-party fire tested.
- Fire rated for up to 120 minutes integrity and insulation.
- Highly compressible to suit irregular outer substrates.
- Tested behind both lapped and flat external weatherboards.
- Tested on timber structural insulated panels (SIPs) panels.
- Tested for masonry outers with damp proof course (DPC) membrane.
- Sizes available to suit cavity batten widths of 25, 38 and 50 mm.
General information
Color | Beige |
Finish | Unfaced |
Material | Rock fibre mineral wool |
Shape | Rectangle |
Length | 1200 mm |
Width | 100 mm Bespoke |
Height | 40 mm 50 mm 60 mm 75 mm Bespoke Manufacturer guidanceThickness. |
Uniclass | |
CAWS | P10/40 Insulation fitted betweenor to the face ofstuds P12/40 Mineral wool rigid batts P12/360 Mineral wool rigid batts H92/776 Thermal insulation |
Specification data - Mineral wool fire-stopping
Material | |
Facing | Unfaced; plain fibre. |
Fire performance | Manufacturer guidanceInsert requirements. Up to two-hours (120 minutes) Integrity and Insulation dependent on cavity size and wall construction. Consult manufacturer's literature for more information. |
Length | 1200 mm. |
Width | 100 mm. Other. Guidance for specification option: Alternate width are readily available; consult manufacturer for more details and insert requirements. |
Thickness | 40 mm. 50 mm. 60 mm. 75 mm. Guidance for specification option: Non-standard. Other. Guidance for specification option: Alternate thickness options available; consult manufacturer for more details and insert requirements. |
Reaction to fire | To EN 13501-1, Class A1. |
Sustainability data
Material | Rock fibre mineral wool |
Expected Life | 60 year |
Literature
NVFB-WB-TDS-21-Rev1
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