Started 120m of 800x800 porcelain on our favourite calcium sulphate screed! Trying another method with
cement based addy this time with a 2 coat primer, primer and adhesive from ultra, Prime it AR with pro rapid rs.
tech said lab tests have worked well.
my last anhydrite screed we went gypsum addy for ditra and
cement based after, but I wasn't confident with the bond to the ditra with the gysum addy
so this time we sanded, primed and did a test patch with ditra, a week later it's stuck like the sticky stuff to a blanket!
trying to remove the ditra test took chunks out of the screed so I am happy with the bond.
120m of ditra went down today so hopefully we are good to go , wish me luck