Looking for advice on slate floor on anhydrite screed.

C'mon guys, how do you think the Roman baths fellows laid stone, in the incredibly hot steam houses?

It is all about using the correct gear for the purpose.... no decoupling mats 2000 years ago.
 
C'mon guys, how do you think the Roman baths fellows laid stone, in the incredibly hot steam houses?

It is all about using the correct gear for the purpose.... no decoupling mats 2000 years ago.

No direct bonding to poor quality substrates either. I know there's no need for uncoupling a lot of the time, but an uncommissioned heated floor of dubious quality, combined with thin, weak stone... That's getting uncoupled. And if a customer will pay for it (and generally they will if i spec' it) then why the heck not?!
 
In fact they did, it's explained in one of Schluter's Ditra video's.
The sand was used beneath the floors to decouple it from the building, that way the building would settle, and the floor would stay in tact.
Was beginning to think i'd made that up😵
 
combined with thin, weak stone...
This is the cause of most of the problems.... customers scrimping or think they are getting a bargain stone.

Most stone floors used to be 2omm minimum. Some of the trav I have fitted recently is like tracing paper.
 

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