Floor build up for tiling

[Dave Dux]

Current plan for floor is 18mm chipboard + 6mm nmp, then 6mm insulation board + durabase Matt with Electra heating cable before tiling with flexible ad. Insulation board and Matt to be installed with flexible adhesive. No screed over cable.

Question, is it worth sticking with the insulation board to improve warm up time?

Thanks

 

[J Sid]

is the chip board a floating floor ?

 

[Just Rizzle]

im not a fan of insulation board over wood.as wood is an insulator and heat rises i think its a waste of money.

 

[LM]

I agree with Julian, we need to know the answer to that question first to then advise on best practice.

 

[Just Rizzle]

if its a floating floor he shouldn't be tiling in hard tiles, should be using lvt which is more adapt to movement

 

[LM]

if its a floating floor he shouldn't be tiling in hard tiles, should be using lvt which is more adapt to movement

That’s why we’re asking the question Ray, to best advise.

 

[Dave Dux]

Sorry guys, missed the update email amongst all the Black Friday stuff.

Chipboard is screwed at 150mm centres to joists and noggins with 6mm nmp glued and screwed on top.

Thanks

 

[Just Rizzle]

answer to 1st question is still no

 

[Spare Tool]

answer to 1st question is still no

Agreed wood is an insulator but cement board isnt, no point heating that up, I'd have done away with the nmp and used a 10mm insulation board, but as nmp is already down for what it is might as well insulate before ufh mat..

 

[Spare Tool]

Would you just fix the ufh directly to the chipboard Ray?

 

[Boggs]

Personally I don’t use insulating boards or uncoupling matting when installing UFH on timber floors.

6mm Hardie backer glued and screwed, heating cable, thin skim of levelling compound and tile over.

Heating up time is around 15mins.

 

[Spare Tool]

Maybe in the heat up time there's probably not a lot in it, but overall efficiency has got to be better with insulation boards..

 

[Waluigi]

Heat up time is far better with an insulation board. There’s very little heat sink with the board.

However the likes of Hardiebacker and Aquapanel do stay hot far longer than an insulation board. Whether that matters or not is another story.