Ufh electric

[fiaraziqbal]

I am giving thought to underfloor heating. Which insulation boards would be best under an electric system, the floor is plywood.

[RHayes]

This depends on how much floor build up you have or floor to ceiling height you have spare.  Also what floor is this on and what floor surface will you be finishing with?  Need a bit more detail on this.

 

Regards

R

[fiaraziqbal]

On 11/08/2021 at 08:30, RHayes said:

This depends on how much floor build up you have or floor to ceiling height you have spare.  Also what floor is this on and what floor surface will you be finishing with?  Need a bit more detail on this.

 

Regards

R

Oh about 2.4 m head height 48 square meters, probably soething cheap like lino as its ust the cabin.. 

[RHayes]

Youll need a dense shallow insulation as you don't want to redcue that 2.4m any more than you have to.   Id recomend something like a 6 or 12mm insulated tile backer board, something like this, https://www.wickes.co.uk/Prowarm-Backer-Pro-Insulation-Board-Single---1200mm-X-600mm-X-6mm/p/166935.  You'll need to put a self leveling or laytex screed over this to encase the electric cables and provide something flat and firm for the lino to be adhered to.  Remember to put the floor sensor in the correct place before you put the self leveling screed down.

 

Key things to be aware of, the electric mat will need to be encased or covered by a screed or cement based materials with no air gaps. Any air gaps will limit the heat conduction away from the electric heater cable and may mean the electric heater cable over heats and trips out.  The insulation will need to be firm as the depth of screed is going to be so small.