If a door is to work effectively in its normal role the door leaf must be free to move within the frame and in order to achieve this there must be a gap around the perimeter.
Maximum gap under fire door australia.
Bs9999 2008 recommends for fire doors with cold smoke control that the threshold gap should be either less than 3mm in height or should be fitted with a threshold seal.
3 4 between door and frame.
In general clearance for those allowed gaps are as follows.
If more than a 10mm gap exists between the door and.
Up to 15mm gap is approved.
Nfpa 80 fire doors and other opening protectives.
Ensure the door is not asbestos.
Contains information on maximum gap allowances for different types of fire doors.
If the gap is too wide it may compromise the door s ability to.
In the closed position gaps between the door and frame jamb head hinge and lock stiles are not to exceed 3mm door leaf to the door seat rebate to not exceed 5mm average bottom.
1 8 meeting edges for a pair of doors.
Maximum allowable gap between leaf and top of finished floor level is 10mm 3 10mm is recommended.
However as soon as the door is closed the other side of the threshold which does not have a thick carpet means there is a 1 2 inch gap at the bottom of the fire door.
Door leaf to door stop not to exceed 3mm average and maximum shall not be more than 5mm excluding pyropanel euroseal frame applications which require 4mm gaps.
Mind the gap fire door seals fire doors play a crucial role in restricting the spread of fire and smoke.
Under the bottom of a door.
Only 3mm of clearance must be evident between the custom fire door and the frame at the head and the stiles.
When speaking with manufacturers however a common statement is that a fire doors gap of up to 8 mm underneath the door is permissible.
In addition to this doors that form a final exit from a fire isolated stairwell or corridor must have signage on both sides of the door.
Up to 15mm gap is approved on some doors.
If the discussed cut amount is approved by that fire doors manufacture ensure a gap no less than 2 5mm to a maximum gap of 10mm anywhere alone the bottom of the door in the closed position.
If more than a 3mm gap exists your fire door will be non compliant no more than 10mm and no less than 3mm of clearance must be evident between the fire door and finished floor.
Maximum allowable gap between leaf and top of finished floor level is 10mm 3 10mm is recommended note.
1 8 for more detailed gap information refer to nfpa 80 section 6 3 1 7 and section.
