Ist underfloor heating job

[Bathfix Bob]

Hi Guys, never used underfloor heating before but I'm doing one this week. Only 3 metre square, loose wire Prowarm on old but good condition floorboards.

The data sheet says no mention as such of Hardiebacker, we have some 6mm insulation boards on site already.

Is it Hardiebacker as normal, then insulation boards, heating wires, slc then tiles? Seems a lot of levels?

Porcelain tiles going down..

 

[Chalker]

If the floor is deflection free. Just prime and adhesive down insulation boards.( don't forget to screw down.
10mm far better insulation than 6mm.

 

[Qwerty]

^^what he said^^

 

[Bathfix Bob]

So these lightweight insulation boards just get glued and screwed down just like Hardiebacker?
Then heating wires, slc and tiles?

I prime the floorboard, use 6mm trowel and rapidset? Then tape joins?

 

[Old Mod]

1800 X 900 Statuerio Sept jotm

• Old Mod
• Sep 1, 2016
• conservatory rip out sept jotm statuario ufh

Conservatory rip out and re tile with UFH

Use what trowel size seems appropriate bob.

 

[Bathfix Bob]

Thanks guys, do I screw insulation boards down every 100mm or so?

 

[Qwerty]

I usually fix every 300mm

 

[Uheat - Neil]

Hi Guys, never used underfloor heating before but I'm doing one this week. Only 3 metre square, loose wire Prowarm on old but good condition floorboards.

The data sheet says no mention as such of Hardiebacker, we have some 6mm insulation boards on site already.

Is it Hardiebacker as normal, then insulation boards, heating wires, slc then tiles? Seems a lot of levels?

Porcelain tiles going down..

Hello if you would like to try an alternative to pro-warm ..
We can give excellent discounts to Forum Members
www.uheat.co.uk

 

[Flintstone]

Personally, I don't see the benifit in taping the joints!

 

[Bathfix Bob]

Thanks guys,