Hi, ive got a job coming up where the builder has put the insulation underneath the concrete slab rather than ontop of it. We have got 75mm to play with for ufh pipes and screed. Can i just have my loops straight on the slab with 75mm screed on top, or do i still need further insulation above the slab even if there is 100mm of celotex underneath it.
Ive never done it this way before so was concerned of unesesarily heating the slab aswell and having a massive thermal mass to heat up. Even though it will be set to run continously at 21deg with a night setback of 16deg.
I could potentailly put 12mm celotex down still but i wont if i dont to?
Any opinions on this will be appreciated.
Thanks
Ive never done it this way before so was concerned of unesesarily heating the slab aswell and having a massive thermal mass to heat up. Even though it will be set to run continously at 21deg with a night setback of 16deg.
I could potentailly put 12mm celotex down still but i wont if i dont to?
Any opinions on this will be appreciated.
Thanks