Can a fire door have a letterbox?
Get a priceYes, but not any letterbox, and not any hole.
A letterbox cut through a fire door takes out a section of the leaf. Unless the gap is filled with something that swells in heat, fire and smoke can get through it.
What a safe one looks like
It has an intumescent lining or a fire-rated housing built in. The aim is that the opening closes up when the heat arrives.
A fire door supplier will sell a letterbox that is designed to go into a fire door. It should come with fitting instructions, and they matter.
What we find
A plain brass or plastic flap, screwed on over a hole sawn by the resident. Nothing round the edge of the hole.
Sometimes the hole is big enough to see the corridor through. Sometimes it has been cut right next to the lock.
What to do
Make a note of the doors that have one. Ask whether the door was supplied with it.
If not, the usual answer is to replace the leaf or have the letterbox properly fitted and lined by someone who knows the door.
A letterbox is a small thing and it goes in the report as a small thing. We still write it down.
Send the postcode and a rough door count. You get a price back the same day.
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