Can you fit a letterbox in a fire door?
Get a priceYes, but only if it is a letterbox made for fire doors.
An ordinary letterbox is a big hole in a door. Smoke and flame can walk straight through it.
Fire-rated ones carry an intumescent liner that swells shut in the heat. The maker also says how it has to be fitted, and the door itself has to be one that can take it.
What we see
Standard brass letterboxes cut into a flat door, with a bare hole behind the flap.
Fire-rated ones fitted with the wrong screws, or with the liner missed out.
Letterboxes cut into a door that cannot take one at all, because the maker's evidence does not cover it.
What to do
Lift the flap and look at the back. If you can see daylight round the edge of the hole, something is wrong.
Then look for the door label or its paperwork to see what the door is rated for. Unsure? Send us a photo.
Replacing the door is sometimes cheaper than putting right a bad hole in it.
Send us the postcode and a rough count of doors. A price comes back the same day.
Get a price