advice needed urgently!!!!

[kilty55]

hiya all again,,regarding my last post,,customer has wooden floorboards with ply down and existing tiles on top,,wants to lay an underfloor heating mat on top then tile on top ,,been advised by your kind selves not too touch it like this with a bargepole,,so need to know if tiles are lifted and ply is adequate this is sufficient to lay mat and tile on top of yes? cheers peeps

[grumpygrouter]

I would say yes but you are still better laying an insulating board underneath the heat mat. Doubt very much if you will lift the tiles without wrecking the ply though if it was laid properly in the first place though.

[GazTech]

If the ply overlay is adequate, then yes...Gaz

[kilty55]

thanks all for your advice