Who is allowed to do fire stopping?

Nobody needs a licence to do fire stopping. You pick someone, and the picking is the hard part.

Here is a made-up site visit to show what to ask for.

The contractor lifts a tile. A 110mm waste pipe goes up through a 150mm concrete floor with nothing round it. They say "collar, underneath, four screws into the slab". Good. Then you ask which collar, and they hand over the data sheet. Better.

Next tile. Twenty data cables through block. They say "mineral wool, coated". You ask how deep. They do not know. Worry.

That is the whole test. A product tested for one wall, one pipe and one hole size will not necessarily work in another. The person who knows that is the person to hire.

When they finish, ask for a numbered list. Gap 14, riser 2F, 110mm waste, collar fitted, 60 minutes, photos 14a and 14b. Insurers sometimes want a third-party scheme as well, with an inspector checking the work. If yours does, say so. Our sealing is carried out by our BM TRADA / FIRAS-certificated contractors.