We're about to have our extension floor tiled. This is a large area of screed with wet UFH - approx. 60m2. I've had conflicting advice on whether we should have Ditra matting. The tiler we're going to use reckons it is a waste of money, but advice from elsewhere suggests otherwise. It's not a small investment to use Ditra matting, but given the cost of the tiles/labour would be worth it if it means that the tiles won't crack. Does anybody have a strong opinion on this? Don
We haven't completely decided on tiles yet although I suspect we will go with large format porcelain. It's an outside chance that we might still go with natural stone. It's another 4 weeks before we can turn the UFH on. UFH will be commmisioned and tested before tiling commences - tiling will likely be in December depending on tiler/tiles availability etc.
With large format porcelain or natural stone it is recommended to use an decoupling membrane. Ditra/Durabase. It is a belt & braces approach. Was it a pumped screed?