Underfloor heating - Tile Advice

[Etherglide]

Travertine tiling on a screed that has piped underfloor heating. Im using an s2 adhesive but should I overlay with Ditra 25 as a precaution?

 

[Dave]

Travertine tiling on a screed that has piped underfloor heating. Im using an s2 adhesive but should I overlay with Ditra 25 as a precaution?

I would yes but why the S2 adhesive ?

 

[Etherglide]

I would yes but why the S2 adhesive ?

Isn't S2 the industry standard for underfloor heating or floor with possible movement? Happy to be educated if Im wrong.

 

[Dave]

Isn't S2 the industry standard for underfloor heating or floor with possible movement? Happy to be educated if Im wrong.

S1 is fine.. you don’t need the deformability of an S2 on a solid screed .. i was just asking thats all 👍

 

[Ajax123]

Trav on heated screed means decoupling is essential