Prep for screed that's 2 years old - TilersForums.com

[richard8688]

Hi,

We have a Gyvlon screeded floor that was laid over 2 years ago.

We've finally got round to tiling it.

It's got wet underfloor heating.

It had all the laitence cleand off, just after laying.

As we have been using the room, there is going to be some dust, dirt, grease etc etc on the surface.

So what's the best we to pre the surface prior to laying?

As it's an anhydrite screed, I was going to go straight on with Tilemaster AnhyFix, then a decoupling mat, then more Anhyfix and then lay travertine tiles.

Does that all sound ok?

Cheers!

 

[hmtiling]

You'll need to remove the contamination. Sanding again probably best option. Fix the mat with anhyfix then change to rapid or semi rapid white cement based on top. Back skim the tile and fix as normal. Good luck

 

[richard8688]

You'll need to remove the contamination. Sanding again probably best option. Fix the mat with anhyfix then change to rapid or semi rapid white cement based on top. Back skim the tile and fix as normal. Good luck

Great! I'll give it a sand off. Thanks.