Double Fire Door Gaps

How big should gaps around fire doors be.

Double fire door gaps.

The development of fire door testing. Seal the space between your double doors. In general clearance for those allowed gaps are as follows. Which is designed to expand when temperatures reach beyond 200 c to seal the gaps between the door and frame.

Under the bottom of a door. Epdm resists abrasion and weather. Flat seals press against surfaces to create a seal. The filaments are nylon for good wear resistance.

Contains information on maximum gap allowances for different types of fire doors. Vinyl is the most economical choice. 1 8 meeting edges for a pair of doors. Wraparound seals create a seal on both sides of a door.

Brush seals have flexible filaments that conform to fill gaps. Best practice guidance states that the gaps at the sides and top of a timber fire door should be between 2 and 4mm. 3 4 between door and frame. The old test of fire doors to bs 476 part 8 for fire resistance was carried out simply in a furnace increasing the temperature to that found in rooms on fire and.

They are abrasion resistant neoprene. You can measure the gap with a simple gap gauge. It s recommended to aim for a 3mm gap to ensure adequate room for the intumescent strips to activate in the event of a fire and for the smoke seal strips if installed to not get damaged by the opening and closing of the door. 1 8 for more detailed gap information refer to nfpa 80 section 6 3 1 7 and section.

10mm x 4mm both sides and top 10mm x 4mm both sides and top 30 30 double pairs of doors. 30 30 double action door. The smoke and the fire will try to push through the side and top gaps around a fire door while usually drawing air from underneath the door. For a private premises it is advised to install fire doors where the risk is most imminent for example the kitchen or rooms which house lots of electrical devices.