Underfloor heating (electric) advice please

grumpycrab

Hi, other half wants UFH in the kitchen. Existing concrete screen dictates that we cannot use a wet system (thank God). Having dug up a couple of layers of existing tiles we have 25mm to play with. Is this enough for insulation+electric mat+tile ?

Any advice/recommendations appreciated. Cheers.

beer_tins

The mats also need to have screed on top of them for heat transfer I think. Is the 25mm including new tiles? It doesn't sound like a lot (1 inch total), but as the screed is used for heat transfer, maybe the overall depth i.e. including what is already there is what matters. I would ask one of the manufacturers to make sure.

grumpycrab

Thanks beinerts. 25mm inlcudes new tiles. Having looked around the web, on top of the concrete screed we have to do :-
1. primer or adhesive
2. insulation (6mm or 10mm is all we have room for)
3. electric mat
4. tile adhesive
5. tile
Std ceramic/porcelain tile depth is 9mm and so, as far as I can tell, it will work with 10mm insulation. Cheers.