faithhealer

Here's the job, customer wants UFH under a slate floor in a converted barn.

1, How does slate compare with ceramics for heat transfer?

Can't inspect floor yet due to the fact the room is full of 'stuff', but have been informed that under the chipboard (that I can see) is the original barn floor, rough concrete with gullies for washing down. so Q2 is

2, probably looking to raise floor an 1 1/2" / 2" to bring it back to current level so do I get a new floor laid,(get the builders in) then use self leveller/backer board etc OR is there a leveller out there too give me 3/4" depth. (tiles etc to take up the rest

Into unknown terrority here lads
HELP

Dave

I did a barn conversion in January with ufh..( piped version ) and was ok with slate...check with ufh supplier to which wattage system you need....back to the floor...get the builders to screed the floor if possible .. quicker and cheaper than self levelling...use insulated backer boards then there will be no heat loss through the substrate...expensive to do but customer will get cost back within a couple of years with the savings made on heating the floor.....dave..

turner plumbing

Hi FH,
if you go on the nu-heat website there is some good info on floor construction, if you register on there it also give you access to their information library.
Floor Construction Suggestions | Underfloor Heating

Also try polyplumb, i have installed their system and was really impressed with it compared to others i've used,
Polyplumb

martin

Apologies, just realised you are talking about electric ufh

versatilene

Unlikely that origonal barn floor has DPC. So will need membrane and a decent screed on top prior to backerboard. Who does it depends on what you feel up to.

faithhealer

Cheers lads, never thought about a DPC. This quote is going through the roof, can see it getting back heeled as they have no rear access! Every thing has to go through the front door!!