Cavity Fire Barriers

Nullifire

Nullifire’s selection of closed and open state cavity barriers are tested to many construction materials. They offer a huge selection of high performance results, utilising different substrates, different insulation types and a variety of cavity widths and air gaps.

The reactive material within their ventilated cavity products meets and exceeds the requirements of ASFP TGD19, and has been tested and assessed accordingly (certification / assessment can be provided on request).

Ventilated cavity barriers prevent the spread of fire and hot gases through the cavity wall, by sealing off the gap in the cavity when exposed to fire. Keeping the fire contained in a compartmentalized space for the specified period allows people the planned time to evacuate, and permits emergency services to confidently enter the building.

KEY REQUIREMENTS for selecting and specifying a cavity barrier product:
1. Determine ventilation requirements of the facade
2. If open state, provide required air gap
3. Advise Nullifire of the internal and external wall construction substrate types
4. Confirm insulation type and thickness to be utilised within the cavity
5. Qualify maximum width of the cavity (including building tolerances)
6. Provide requirements for integrity and insulation performance
7. Ensure suitability of internal substrate for stainless steel brackets
8. Request horizontal and vertical barriers from the same supplier
9. Ask for copies of third-party certifications or assessments.

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