UFH for Ground Floor House - Old Part and New Extension

[NDNDNDND]

dhutch said:

Presumably to install wet UFH on a suspended floor tends to involve raising the level of the floor? Which then has implications for doorways and height to the first step of the stairs? Thin pipe systems?

Or is it more common to lift the floorboards and have the insulation and pipework in below that?

There are systems that install the UFH pipes between the joists, which would avoid affecting door head heights and stairs etc.

[KurtKlaus]

garyhun said:

Those % figures are potentially misleading.

If your entire UFH system is £4K then £1k for the new and £3k for the old seems reasonable. If you’re looking at a total of £40k then £10k v £30k sounds very expensive for the suspended timber part.

Then it roughly makes sense. New part is about 30 square metres, old bit about 12. Have been quoted 1900+VAT for the new part, and 2900+VAT for old part.

[anonymous-user]

KurtKlaus said:

garyhun said:

Those % figures are potentially misleading.

If your entire UFH system is £4K then £1k for the new and £3k for the old seems reasonable. If you’re looking at a total of £40k then £10k v £30k sounds very expensive for the suspended timber part.

Then it roughly makes sense. New part is about 30 square metres, old bit about 12. Have been quoted 1900+VAT for the new part, and 2900+VAT for old part.

You may have to also lay a deck of some kind on the joists, and possibly a self levelling compound, which will also add to the costs.

Only you’ll know, by talking with the company doing the work or looking through the detail of the quote, where the difference in costs is coming from. I’m just suggesting some possibilities.

[a7x88]

Just done this in our place (we also did upstairs).
Ours was a solid concrete floor with a screed over the top. Ended up digging the whole lot up, removing some of the sub base, pouring a new slab, DPM, colotex, pipes then a new pumped liquid screed.

Not cheap but it works fantastically. Upstairs we replaced all the old floor boards anyway (about a million different sizes and most had been up and down more than a lady of the nights underwear). Chipboard flooring then pipes then a liquid/latex screed. Lovely solid floor now with minimal height build up (18mm IIRC). We used Nu-Heat for a lot of the design/spec and they were great