A standard letterbox cut into an FD30 fire door is one of the most commonly missed compliance failures on a fire door inspection, and most landlords have no idea it's a problem until an assessor flags it. The door can pass every other check, correct leaf, correct seals, working self-closer, and still fail because of a hole cut into it years earlier during a routine refurb. This guide explains why an uncertified aperture voids the door's whole rating, what an intumescent fire-rated letter plate actually does differently, and how to check every fire door on a property before it becomes someone else's finding.
Hotel & HMO refurb
Electrics, bathrooms, hotel housekeeping and fire safety from a single supplier. BOMs by room type, UK compliance checklist.
Read the hotel refurb guide

