Fire Door Gaps

How big should gaps around fire doors be.

Fire door gaps.

You can measure the gap with a simple gap gauge. The gap between the door and the frame is extremely important and must be suitable for the intumescent seal fitted. Ngp s gap90 head jamb 9590. In general the gap should not exceed 3mm along the 2 long edges and across top of the door leaf to facilitate checking of the gap on site a bwf fire door alliance scheme gap.

Whether at the head jamb or door bottom excessive gaps put lives at risk. 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. Nfpa 80 fire doors and other opening protectives contains information on maximum gap allowances for different types of fire doors.

In general those allowed gaps are as follows. Under the bottom of a door. In general clearance for those allowed gaps are as follows. 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 between door and frame. Contains information on maximum gap allowances for different types of fire doors. Clearance for under the bottom of a door. Safelincs provides gap gauges free of charge on request.

What gaps are required around a door and its 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.