Calcium sulphate screeds.

[Yorkshire Tiling Services]

De - coupling not always necessary

 

[Ajax123]

The popularity of these
screeds is not really related tonthe level of prep required which realistically is not much different to sand cement screeds. The popularity is based on the many benefits they offer. A sharp return to sand cement is unlikely really buthere is quite a way to go before we get to the situation like we see in france and holland where most of the screed is calcium sulphate these days

 

[simonb43]

Never heard of this type of screed. Can someone explain what it is and what prep is needed ?? Don't mean to sound like an idiot

 

[ashley600]

done 5 barn converstions in the last year to 18 months, all calcium screeds with UFH. no probs so far. all scrubed and cleaned then primed. none de-coupled yet but the next one starting in two weeks has three major stress fractures so the builder has agreed to decouple, room is 10m x 9m.

the previous 5 barns had not one expansion joint anywhere in the 200m+ of screed!!!