Fire Door Gaps

Safelincs provides gap gauges free of charge on request.

Fire door gaps.

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 the door was checked to ascertain when the fire would breach the door usually at the gaps at the head and sides of the door. 3 4 clearance between door and frame. 3 4 between door and frame. 1 fire door gap solutions frame head gap90 simpler smarter and safer ngp s ul certified 90 minute fire door gap solutions will help you avoid the cost labor and disruption of replacing existing structures to achieve compliance.

Nfpa 80 fire doors and other opening protectives contains information on maximum gap allowances for different types of fire doors. 1 8 for more detailed gap information refer to nfpa 80 section 6 3 1 7 and section. How big should gaps around fire doors be. You can measure the gap with a simple gap gauge.

Whether at the head jamb or door bottom excessive gaps put lives at risk. Under the bottom of a door. Nfpa 80 fire doors and other opening protectives. The gap between the door and the frame is extremely important and must be suitable for the intumescent seal fitted.

What gaps are required around a door and its frame. Clearance for under the bottom of a door. Ngp s gap90 head jamb 9590. In general those allowed gaps are as follows.

1 8 meeting edges for a pair of doors. Best practice guidance states that the gaps at the sides and top of a timber fire door should be between 2 and 4mm.