heating under carpet as well as tile

[Chris Gibbs]

I have a job to do in this lovely house... under tile heating in all bathrooms and en-suites. Thing is though in the two main bedrooms he doesn't want to see a radiator on the walls so asked if I could continue the under floor heating under his carpet.
the flooring at the moment is wayrock chipboard. I was thinking; maybe a tilemaster membrane over the floor with a 3mm bed of flexi, then under wire heating then a 10mm latex SLC, or would you use hardi backer boards, or even cement boards on the floor instead of a membrane?
All advice greatly appreciated.
Chris.

 

[One Day]

10mm thermal boards on the tiled floors (wedi etc) then slc onto the wires. Then just tile. Belt and braces, or if it's a large area - uncouple (ditra etc).
Carpet - I would do the same as for tiled, but make sure that the underlay is low enough tog rated for ufh. VERY important or heat gets trapped and damage occurs.
Also check the requirements carefully with ufh manufacturer when it comes to fitting under carpets.
Please don't use Hardibacker - it's rubbish!

 

[Chris Gibbs]

10mm thermal boards on the tiled floors (wedi etc) then slc onto the wires. Then just tile. Belt and braces, or if it's a large area - uncouple (ditra etc).
Carpet - I would do the same as for tiled, but make sure that the underlay is low enough tog rated for ufh. VERY important or heat gets trapped and damage occurs.
Also check the requirements carefully with ufh manufacturer when it comes to fitting under carpets.
Please don't use Hardibacker - it's rubbish!

many thanks Impish

 

[Flintstone]

I darent post a link but there's a popular site that sells different kits for fitting under carpets, have a google, it's a different sort of Matt.

 

[Chris Gibbs]

I darent post a link but there's a popular site that sells different kits for fitting under carpets, have a google, it's a different sort of Matt.

yeah its like a foil backed one that you slc over... I'm just wondering about the cement board to lay it on though? the more I think about it the more bullet proof it seems.
thank you though.

 

[Flintstone]

I'd ask the supplier mate see what they recommend, totally different to tiling

 

[One Day]

Heck I must be tired! Soft floor covering over 10mm wedi would be a bad idea - SORRY! Under carpet you're probably better off using HB (there - I said it!)

 

[Flintstone]

Insulation boards or insulated underlay are what you need rather than hardie or ply or anything like that

 

[Old Mod]

You can use variopro under carpet with a 10mm SLC covering, in bathrooms over insulation board and 5mm SLC

Variopro installation manual

 

[Chris Gibbs]

You can use variopro under carpet with a 10mm SLC covering, in bathrooms over insulation board and 5mm SLC

Variopro installation manual

thank you for the link... I don't suppose you know if you can connect extra length to the heating cable? the area is about 36m, the site only says the cables go up to 19m. looks just what I'm after though