Fitting intumescent strips to fire doors
They are designed to swell once the ambient temperature exceeds 200°C, which will usually occur within the first 10-20 minutes of a fire. Properly installed intumescent strips will fill gaps between the door and frame to achieve fire compartmentation.
Are intumescent strips a legal requirement?
The Building Regulations indicate where you have fire doors, these would require intumescent strips. ... In a standard fire door, the door leaf must be free to move within the frame, and in order for this is to be possible, there must be a small gap around the perimeter.
Do all fire doors have to have intumescent strips?
ALL fire doors MUST be fitted with the appropriate seals.
Intumescent seals may be placed into grooves machined in the two vertical sections and top edge of the door frame.
