Reducing gaps in FD30s door

[Member 487327]

Hi there,

I'm new here and I've been reading a few of the topics posted here about reducing gaps. I have a front door to the flat that has 4mm gap on the hinge side and 6mm gap on the closing side. I wanted to ask if surface mounted fire and smoke seal can be used to close the gap on the closing side to less than 4mm?

Thank you.

[Neil Ashdown MAFDI]

The 2mm to 4mm gap requirement in BS 8214: 2016 refers to the gap between the edge of the door leaf and the inside face of the door frame.  Therefore, in order to resolve a larger gap at the closing edge it would be necessary to loosen/remove and re-position the door frame closing jamb. 

The smoke seal, in order to be effective, should completely seal the gap when the door is closed.