Nullifire FV225 (Large) Ventilated Cavity Fire Barrier
Verified by manufacturer 8 months ago
Cavity size 40–100 mm
Cavity size 40–100 mm
Suited to a ventilated cavity with a maximum air gap of 25 mm and consists of a specially formulated fire rated rock mineral fibre section with an integral high expansion intumescent seal.
Application
Applied horizontally along the compartment line to suit ventilated cavities up to 450 mm, typically with rain screen cladding or similar and will suit most construction types to provide generally up to 180 minutes of Integrity and 180 minutes of Insulation.
This is possible subject to details, please consult the Nullifire or illbruck Specification Team. Nullifire FV225 is designed to be complimented by Nullifire FJ260 non-ventilated cavity fire barriers applied to the vertical compartment lines.
Description
Nullifire FV225 ventilated cavity fire barriers are ’open state’ cavity fire barriers for ventilated cavities of up to 450 mm.
Each Nullifire FV225 ventilated cavity fire barrier consists of a specially formulated fire-rated stone mineral wool section with an integral high expansion intumescent seal fixed to the leading edge.
The Nullifire FV225 ventilated cavity fire barrier then leaves a maximum 25 mm air gap to allow for drainage and maintain ventilation in normal use. In a fire situation, the intumescent seal rapidly expands to seal off the air gap and prevent vertical fire spread within the external wall.
Nullifire FV225 ventilated cavity fire barrier has undergone extensive fire testing following the principles of ASFP TGD19 (Fire Resistance Test for ‘Open-State’ Cavity Barriers).
Nullifire FV225 ventilated cavity fire barriers are mechanically fixed horizontally within ventilated cavities behind the external wall substrate following the fire compartment line.
Nullifire FV225 ventilated cavity fire barriers are used horizontally and can be installed in conjunction with Nullifire FJ260 Non-Ventilated Fire Barriers which provide vertical fire separation along fire compartment party wall lines.
General information
Color | Beige Guidance for specification option: Stone wool. Blue Guidance for specification option: Polythene sleeve. Grey Guidance for specification option: Intumescent band. |
Material | Mineral wool Stone wool Polythene Intumescent |
Shape | Rectangle |
Length | 1000 mm Guidance for specification option: As standard. |
Width | Bespoke Guidance for specification option: Varies = total cavity width minus 25 mm. |
Height | 75 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 | P10/77 Ventilated cavity barriers P10/435 Ventilated cavity barriers |
Specification data - Intumescent sleeved mineral wool cavity fire barriers
Standard | Tested and certified in accordance with ASFP Technical Guidance Document TDG19.Guidance for specification option: Tested and certified in accordance with ASFP Technical Guidance Document TDG19 at least 60 minutes integrity and 60 minutes insulation. Typical 120 minutes integrity and insulation up to 300 mm wide cavities 90 minutes integrity and insulation for up to 450 mm wide cavities. |
Fire performance | Fire-rated for up to 180 minutes.Guidance for specification option: Depending on the application. Consult manufacturer and insert requirements. |
Material | Mineral stone wool, polythene sleeve and intumescent band. |
Thickness | 4 mm.Manufacturer guidance+10/-0 mm. |
Cavity width | Guidance for specification option: Consult manufacturer and insert requirements.
Manufacturer guidance+5 mm/0 mm. |
Air gap | 25 mm (nominal). |
Length | 1000 mm. Guidance for specification option: As standard. Other. Guidance for specification option: Can be cut to length. Manufacturer guidance+0 mm/-5 mm. |
Bond | Stainless steel countersunk head screws, maximum head diameter 11.5 mm, length to suit cavity barrier and substrate. 4 no. screws per linear metre. |
Shape | Rectangle. |
Colour | Stone wool (beige), polythene sleeve (blue), intumescent band (grey). |
Durability | Type X. Guidance for specification option: Intended for use in conditions exposed to weather (UV, rain and frost). |
Service temperature | -20°C to + 70°C. |
Life expectancy | ≥60 years. Guidance for specification option: UK, at least 60 years (refers to the active intumescent component). Shelf life - unlimited when stored as recommended. |
Installation accessories | Drill. 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. |
Sustainability data
Country of material origin | United Kingdom |
Country of product manufacture | United Kingdom |
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