Quartz or similar and UFH. Can Someone explain why not

[Peter]

Is there any truth in quartz curling in conservatories?

 

[Jeff the tiler]

Thanks all for the responses. The post has given some great info. I Was asked by a local supplier to comment on a floor that has recently lifted with quartz and UFH.
The Info really helped. Quite interesting though the photo i saw showed the floor had been serrated trowelled and then dot and dabbed fixed on top.
Obviously floor uneven. When will people learn???

Everyone now has a reason to pass the buck back to the tiler.