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It's been a while since I got my ticket and my experience apart from fitting fd30 doors as part of a loft conversion is almost entirely commercial.
But.....
Off the top of my head a door going from a communal hallway to a flat should be fd60 according to today's regs. I don't know if it would have been different in '86 (if it was you can do a like-for-like replacement) however it will be easy to tell a fd30 door is 45mm thick, fd60 is 54mm.
You should have an intumescent with cold smoke seal on the door or door liner. I'd go with brush over blade as they are less susceptible to damage. Fitting them is a peice of piss cut to length, peel off the sticky backing an insert in the rebate.
If it's too tight to go in you'll need to strip off the paint in the rebate I'm afraid. The intumescent material is contained within plastic and can be damaged by rough handling.
I wouldn't worry too much about the inspection, there are many things that they can pick up on and you should be given advice, and time, to make it right.
Before going out and buying any intumescent strips check the gap around the door, it cannot be less than 2mm or more than 4mm and should ideally be 3mm. If it doesn't fall within these tolerances, which is possible given the age of the building you'll be forking out for a new door and, quite possibly, a frame too.
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Bobbo
intumescent strips.
anyone an expert?
i have an upcoming fire inspection of the front (internal) door to my flat. there is no intumescent strip fitted in the frame but there is a channel cut 9.5x4mm so i guess there was one at some point (flat built in 1986) i think the front door is probably an FD30 the internal doors that i replaced had wired safety glass and small chain closers in the door gap so i guess there were some fire safety measures done.
any pointers? not sure what to buy? heat only? heat and smoke? are they flexible so easier to fit? i’m guessing there is a mm of gloss making the channel a tight fit so something easy to ‘persuade’ into that gap.