Gap Between Double Fire Doors

1 8 meeting edges for a pair of doors.

Gap between double fire doors.

In this case an allowance should be made for the degree of bevel. The lsc does not specify a minimum gap for corridor doors of 1 8 inch and in addition the lsc specifically states that compliance with nfpa 80 standard for fire doors and fire windows is not required 18 19 3 6 3 1. 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.

Under the bottom of a door. In general clearance for those allowed gaps are as follows. Bs 8214 2008 states that the gap along the sides top and between the leaves of a double door should be 3 mm 1 mm. If the doors are solid wood they are susceptible to swelling and shrinkage in response to changes in the weather and these shifts are magnified in the case of double doors.

Control of door gaps gaps between fire doors and the door frame should never be more than 4mm or less than 2mm. Under door threshold gaps should be in accordance with the manufacturer s installation instructions for the particular doorset design. Worryingly the fire door inspection scheme fdis recently highlighted that three quarters of all fire doors inspected in 2019 were condemned as not fit for purpose. If you own a commercial or non domestic property there are strict regulations and guidelines to follow ensuring the doors can withstand certain heats.

3 4 between door and frame. When a 1 8 in thick tool fits into the gap with no lateral movement the gap is within nfpa 80 s specifications. The meeting edge clearance between double egress pairs of doors measured from one side only may potentially exceed 3 16 since the measurement would be from the pull side of one door to the push side of the other door. Therefore it is incorrect to apply the 1 8 inch gap.

For example the maximum door gap dimension for 3 4 hour and greater rated wood fire doors is 1 8 in no over tolerance dimension is permitted. Where you have a double leaf door set what is the permissible gap between the cold smoke seals on each door. Nfpa 80 fire doors and other opening protectives.