Advice on Tiling On Underfloor Heating

[Kevboy]

Hi all, just looked at a job where the customer has fixed insulation boards in an upstairs bathroom and wants underfloor heating and then fixing ceramic floor tiles. Would the tiles be prone to cracking without a de-coupling system or should i quote for laying ditra matting?

 

[StevieBoy]

Hi all, just looked at a job where the customer has fixed insulation boards in an upstairs bathroom and wants underfloor heating and then fixing ceramic floor tiles. Would the tiles be prone to cracking without a de-coupling system or should i quote for laying ditra matting?

Should be fine with 2 part addy.

 

[Qwerty]

An S1 will see you alright there

 

[Chalker]

Prime the boards ( helps the ufh cable stick too) and tile with s1

 

[JMC tiling]

For me, assuming the boards are suitable and been fixed correctly. prime boards, connect underfloor heating alarm to feed to detect any damage whilst working, lay underfloor heating (if matting, a good tip is to use some spray on floor adhesive to help stick matting down as it can bubble up and rise to surface sometimes when used with SLC) take picture of position of underfloor heating, fill any holes in floor with something like expanding foam or whatever suites, then a suitable SLC fibre enhanced, leave to dry, prime again, tile leaving a small (between 3-5mm) gap around edge for expansion and movement, grout, dry, silicone colour match around edge and jobs a good'un!