A fire door must be fitted with approved intumescent strips which play a crucial part in achieving the fire door rating. When subjected to heat, the intumescent strips expand and seal the gap between the door edge and the frame. Intumescent seals can be fitted within the door frame or grooved into the door edge. Advice on the intumescent strips can be obtained from the test evidence report, which we can provide.
The material from which the door frame is constructed, as well as its section sizes must comply with the required standards. Furthermore, essential hardware must also have its’ own individual test evidence to show fitness for purpose.