insulation boards on concrete

[radim]

I got about 40 m2 of porcelain floor to do.
concrete slab, insulation boards, heating wire, and tile. Do you screw or just glue insulation boards to concrete?
cheers.

 

[nybor62]

glue down , what about latex over the ufh wire

 

[radim]

glue down , what about latex over the ufh wire

aye, will be latexing whole area.

 

[Andy Allen]

Same stick them down with flexible adhesive

 

[Just Rizzle]

how new is your concreat slab? youdidnt say

 

[radim]

how new is your concreat slab? youdidnt say

not sure. half is existing floor and half new extension.
still got a couple of weeks to go tho...

 

[Just Rizzle]

befor you go any futher you need to know the moisture content of the extension slab as putting any thing over will trap in any moisture you may need to put a liquid dpm down first

 

[High Peak Tiling]

slightly on topic, what trowel size do you guys use for fixing backer board to the floor?

 

[radim]

6 or 8