Hi all about to quote on a job which is a 24m2 kitchen floor( concrete )
One quote with undertile heating & insulation boards & one without.
If i use r/s/flexi adhesive to bed the insulation boards & again over the undertile heating for the tiles, will this be sufficient enough? Would i need to consider an uncoupling membrane?
If its just tiles straight down with rapid set, would i also need to uncouple?
Tiles will prob be porcelain or ceramic.
Many thanks,

Needs to be flexi with or without insulation boards...

Even without undertile heating?

No uncoupling material needed either then?

Originally Posted by peegee tips

Even without undertile heating?

No uncoupling material needed either then?

If porcelain tiles, you will need a flexy adhesive (polymer modified). If normal ceramic on unheated tiles you will be ok with a standard adhesive. Decoupling membranes are not required in this case either unless you think there may be movement that needs addressing.

U could use slc over the ufh if u dont fancy tiling straight over the ufh, this will protact the cables.

John

Cool so...

Boards+heating+tiles = r/s/f & flexi grout ( ceramic & porcelain )
Straight to concrete = normal r/s unless its porcelain.

Just that i have two conflicting opinions.

Decided not to self level, trying to keep the height down a as much as possible. I always use a plastic trowel over heating.

I was just going off no insulation and with insulation and ufh....


If no ufh then rapid set will do if it is suitable for porcelain...

so you got it right..

Originally Posted by peegee tips

Cool so...

Boards+heating+tiles = r/s/f & flexi grout ( ceramic & porcelain )
Straight to concrete = normal r/s unless its porcelain.

Just that i have two conflicting opinions.

Decided not to self level, trying to keep the height down a as much as possible. I always use a plastic trowel over heating.

Don't see why slc should add much height, you only level to the top of the cables, well I do anyway.

Speak to Matt manufactor as some say to cover cables with SL some say tile straight onto with RSF

Excellent.....cheers.......

As for the self levelling,Its nice to save the customer the extra expense when i can tile straight onto the heating wire.....i know we're only talking a couple of mm.......but saves money & my time especially over 24m2.

Thanks anyway.