Insulated raft

lownhard

With an Irish company now in the insulated raft market prices are getting pretty competitive and I'm tempted by the prospect.

One issue I am having is that the 100mm floor pour is supposed to be the finished floor. If one is thinking of ufh then it is not ideal that to have ufh in 100mm of concrete.

I was trying to think of a solution to this. Going the timberframe route, I was thinking that using a soleplate on top of the raft to raise the frame and it would allow enough depth to put perhaps an additional 50mm of insulation and a 50mm screed with UFH.

What do ppl think? Is all that effort just adding ridiculously to cost. Ie, would you be aswell putting the ufh in the 100mm as the savings by putting it in a 50mm screed be negligible and defeating the point of insulated raft be adding further insulation?

BryanF

The UFH in the 100 conc just means slower response time, but if your going insulated raft your general spec (air-tightness , hrv, kw heat requirements) should mean your going for a constant but min heat, min heat loss, and once your used to the system you'll understand the time delay.

A fella called fish

Am I correct in assuming that your proposed raft is 100mm thick...possibly with pipes in it???

If so, what has the Structural Engineer got to say about that?