Schluter say detra can be layed on screed (with a suitable adhesive) as soon as you can walk on it, and can then be tiled. No need to wait weeks for full cure.
Well that's a risk I would never take. My personal opinion. Everyone is different and Everyone will say different its what yoy think os best as its your job. :thumbup:
Screed has not been poured, i will get the UFH heating commissioned after 3 weeks and give that a week's use, will the Durabase not be suitable to use after that?
What adhesive will be suitable for the Durabase and for the tiles?
Schluter say detra can be layed on screed (with a suitable adhesive) as soon as you can walk on it, and can then be tiled. No need to wait weeks for full cure.
This was one of the fundamental reasons behind the very design and development of Ditra Matting, to allow fast track installation on green screeds.
I understand how these specifications have become belt and braces over the years, particularly since I quit tiling, but we fitted 1000m2's of limestone and marble on concrete screen with UFH over the years and never needed any form of uncoupling membrane on a properly set screed.
The only time we did use Ditra was on green screeds, as back then, that's what it was designed for.
BTW, Azul Valverde (Blue Valley) is a lovely Portuguese stone, very dense for a limestone but it's an absolute pig to grout when flamed. Do consider "pointing" instead of grouting, it will save time in the long run.
