FV025 Small Ventilated Cavity Fire Barrier
Verified by manufacturer 7 months ago
Nullifire FV025 small ventilated cavity barrier consists of an encapsulated rigid intumescent band that is used to prevent the spread of fire for up to 60 minutes in shallow cavities.
Application
- Mechanically fixed within horizontal and vertical in shallow uninsulated cavities up to 25 mm wide to allow a ventilation and drainage gap.
- High suited to timber framed construction, masonry and external planked weatherboards.
Description
A fire-rated product designed to act as an external wall cavity barrier at the junction of compartment floors, within uninsulated cavities. Third party tested and proven to reinstate the fire resistance performance within “open state” external wall cavities for periods up to 60 minutes, for both integrity and insulation to the principles of ASFP TGD 19 guidance.
Ventilated design – developed to allow maximum ventilation of cavities reducing the need for cavity trays or weep holes. Suitable for “open-state” ventilated cavities up to 25 mm wide.
Provided in strips 1 m long, 35 mm wide and 4 mm thick lightweight - designed to be easily and quickly installed. No maintenance is required after installation
General information
Color | Silver |
Finish | Other Guidance for specification option: Plain. |
Material | Aluminium Intumescent Manufacturer guidanceCompressed rigid high expansion intumescent minerals encased in aluminium foil. |
Shape | Rectangle |
Length | 1000 mm |
Width | 35 mm |
Height | 4 mm |
Warranty description | Other Guidance for specification option: Any product which has been applied (a) in accordance with Tremco CPG UK Ltd written instructions and (b) in any applications recommended by Tremco CPG UK Ltd, but which is proved to be defective, will be replaced free of charge. |
Uniclass | |
CAWS | P12/40 Mineral wool rigid batts P12/360 Mineral wool rigid batts P10/70 Sleeved small cavity barriers P10/420 Sleeved mineral wool small cavity barriers |
Specification data - Intumescent sleeved mineral wool cavity fire barriers
Standard | Tested and certified in accordance with ASFP Technical Guidance Document TDG19. |
Fire performance | Fire-rated for up to 60 minutes.Guidance for specification option: Depending on the application. Consult manufacturer and insert requirements. |
Material | Compressed rigid high expansion intumescent minerals encased in aluminium foil. |
Thickness | 4 mm. |
Cavity width | 25 mm. |
Air gap | 21 mm.Guidance for specification option: For ventilated shallow cavities up to 25 mm (the required air gap is 21 mm max). |
Length | 1000 mm. |
Height | 35 mm. |
Bond | Fixed with ø5 mm stainless steel screws or nails with a head size no greater than 11.5 mm at 250 mm centres. Guidance for specification option: Fasteners supplied by others. |
Shape | Rectangle. |
Colour | Silver. |
Expansion | 26:1 ratio. |
Durability | Type X. Guidance for specification option: Intended for use in conditions exposed to weather (UV, rain and frost). |
Operating temperature | 80°C. Manufacturer guidanceMaximum. |
Service temperature | -20°C to + 70°C. |
Storage | Store in dry, ambient conditions between -20°C to + 70°C. |
Life expectancy | ≥60 years. Guidance for specification option: At least 60 years. Shelf life - unlimited when stored as recommended. |
Installation accessories | Tape measure. Manufacturer guidanceConsult manufacturer for guidance. |
Execution | Guidance for specification option: In strict accordance with the manufacturers Technical Data Sheet, Test Data and separately available detailed NBS Product Specification. The principal designer must approve the use of any cavity barrier, whether open-state or full-fill, in conjunction with the products fire classification reports, taking full account of the whole construction of the external wall systems and the components, including any requirements of the Building Regulations and Warranty provider standards. Ensure the installation area is free from dust, oil and any corrosive material. Check the mounting substrate is solid and free from cracks and degradation before beginning. |
Sustainability data
Country of material origin | United Kingdom |
Country of product manufacture | United Kingdom |