The gap between the door and the frame is extremely important and must be suitable for the intumescent seal fitted.
Fire door gaps.
How big should gaps around fire doors be.
3 4 between door and frame.
Contains information on maximum gap allowances for different types of fire doors.
In general those allowed gaps are as follows.
Safelincs provides gap gauges free of charge on request.
Nfpa 80 fire doors and other opening protectives contains information on maximum gap allowances for different types of fire doors.
Whether at the head jamb or door bottom excessive gaps put lives at risk.
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.
1 8 meeting edges for a pair of doors.
What gaps are required around a door and its frame.
Nfpa 80 fire doors and other opening protectives.
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.
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.
Under the bottom of a door.
Clearance for under the bottom of a door.
You can measure the gap with a simple gap gauge.