Cavity Fire Closers - Cavity barrier
Verified by manufacturer 2 months ago
Semi-rigid Rockwool laminated to polythene damp proof course cavity closers.
Application
- Designed to close masonry cavities for fire, thermal and acoustic purposes; reduces cold bridging when closing cavities at door and window frames.
- AIM Cavity Fire Closers can be used in openings such as a window or door. They can also be used as a cavity barrier within extensive cavities where the cavity, within the wall structure, is in excess of 20 m long.
- For cavities in excess of 100 mm, please use the AIM Wall Cavity Barrier complete with Polythene DPC.
Description
Designed to close masonry cavities for fire, thermal and acoustic purposes; reduces cold bridging when closing cavities at door and window frames. Can accommodate movement in the building and allow for any irregularities in the cavity clips per length.
Features and benefits:
- AIM Cavity Fire Closer is supplied pre-cut in 1200 mm lengths, widths and thicknesses vary depending on the fire rating required. The product supplied is as required to fill the void.
- The product is supplied pre-cut to suit the cavity size and complete with the required fixing clips (fitted with at least two clips per length).
- A strip of Rockwool stone wool insulation laminated to a polythene DPC.
- DPC polythene conforming to BS 6515:1984.
- Closes cavities up to 100 mm thick.
- Prevents cold bridging.
- Close masonry cavities for fire, thermal and acoustic purposes.
- Helps ensure that openings in cavity walls do not encourage the spread of fire into or out of the cavity (for up to two hours).
- Reduces cold bridging when closing cavities at door and window frames.
- Test evidence supports the use within a wider range of substrates compared to other products (masonry, timber frame and SFS through wall constructions).
General information
Material | Polythene Stonewool |
Shape | Rectangle |
Length | 1200 mm |
Width | 100 mm 150 mm 190 mm |
Height | 20 mm 50 mm 65 mm 75 mm 100 mm Manufacturer guidance
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Uniclass | |
CAWS | P12/360 Mineral wool rigid batts P12/40 Mineral wool rigid batts |
Product range |
Specification data - Sleeved mineral wool cavity barriers
General requirements | Close masonry cavities for fire, thermal and acoustic purposes. |
Size | 100 mm width.150 mm width.190 mm width.Bespoke.Guidance for specification option: Insert requirements. Manufacturer guidanceNon standard widths available upon request. |
Residual cavity width | Not required. |
Fire performance | Masonry to masonry: EI 120/120 minutes; Masonry to softwood: EI 60/30 minutes; Masonry to OSB: EI 60/60 minutes; Masonry to CP board/ SFS: EI 60/60 minutes.Manufacturer guidanceThe product has been tested vertically and horizontally to BS EN 1366-4 to provide up to 120 minutes integrity and insulation. |
Sound insulation rating | To BS EN ISO 10140-2, RW 14 db (75 mm), RW 18 db (100 mm), RW 23 db (140 mm).Manufacturer guidanceAIM Cavity Closer may be used to prevent the passage of flanking sound within masonry cavities. It complies with Approved Document E 2003 to the Building Regulations. |
Thickness | 20 mm. 50 mm. 65 mm. 75 mm. 100 mm. Manufacturer guidanceAIM Cavity Fire Closers are installed under compression (5% compression required). Non standard thicknesses available. For cavities over 100 mm, use AIM Wall Cavity Barrier with DPC. |
ThermalConductivity | 0.034 W/mK. |
Semi-rigid DPC | Length: 1300 mm, Side Overlap: 40 mm, End Overlap: 100 mm. Bespoke. Guidance for specification option: Insert requirements. Manufacturer guidanceNon-standard sizes and DPC offsets are available. |
Durability | AIM fire barriers are chemically inert, will not sustain vermin and do not encourage the growth of rot, fungi, moulds or bacteria. Guidance for specification option:
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Compatibility | Compatible with all normal building materials. |
Environmental | Global warming potential = zero. Guidance for specification option: AIM fire barrier products are manufactured from stone wool insulation which is universally recognised as being a sustainable and environmentally friendly material. |
Accessories | Not required. Acrylic fire rated intumescent mastic. Fixing clips. |
Literature
AIM Cavity Fire Closer Technical Guide 2022