Hi All, I queried the matter of UFH in an up-stairs floor a few months ago and was given lots of advice Thanks. The next dilema I have, is, I have been advised the most effective/efficient method is by battons then 9mm ply and a biscuit screed (?) on and around the pipes. (with an insulation layer in there somewhere)
Advice on the following would be great. batton size and height from top of joists, what type of insulation (and where it goes in the "sandwitch" and, the main thing of concern... weight loading on joists, is there any reason the joist of a 70's built house would not be able to withstand the increased loading of the weight of the new screed floor? Maximum joist span is no greater than 4.5M
Oh, also.... is there any rough guide as to quantity of sand/cement required. e.g. if screed is 60cm thick (if that's the right thickness) what quantities of sand / cement would be required to cover what area.
Sorry if I'm being a bit vague.
Cheers