Water Underfloor Heating - Concrete Prep? - Tile Advice

[PaulJohnson]

I have just had water underfloor heating fitted in my kitchen. The surface is now concrete and is very dusty.
I am wanting eventually tile the floor, but for the time being I want to limit the dust created by the concrete.
Is there a product (primer?) that I can use to seal the dust and also help the tile adhesive adhere when the tiles are laid?
Any other advise with regards to tiling over water UFH would also be great.

Cheers
Paul

 

[Gazzer]

Yes you can use a tile primer such as Mapei Primer G.
As for tiling you may want to consider an uncoupling membrane before fixing tiles. Although not strictly neccessary its my 1st choice.

 

[CJ]

Bal primer/APD will keep the dust down and prepare it for tiling.

Use a flexible adhesive and grout.......weather you use an uncoupling membrane or not

 

[Grace'sDad]

Please DO NOT use PVA in any form!

 

[PaulJohnson]

Thanks for the advise guys.

By the way, what is an uncoupling membrane?

 

[White Room]

This will give you some information Technical Advice - Schlüter-DITRA - Schlüter-Systems

 

[doug boardley]

in brief Paul, it allows the tiled floor to be independent of any structural movement of your substrate, so these deflections etc are not transfered to your tiles and resulting in cracking,heave and unbonding of your tiles

 

[Grace'sDad]

in brief Paul, it allows the tiled floor to be independent of any structural movement of your substrate, so these deflections etc are not transfered to your tiles and resulting in cracking,heave and unbonding of your tiles

Sorry to correct this Doug, but I'm pretty sure it is only really lateral (sideways) movement i.e. expansion and contraction which it is designed to isolate. Floors still need to be strong and free of deflection.
I guess the cushioning effect of a Ditra-like membrane will help a little though.