Anhydrite screed advise

[mike1979]

I'm tiling a 36 metre floor next week it's dried out and the builders are putting 3 coats of this blue primer on it I've ordered anhydrite adhesive but been told I don't need it as it's been primed and can use rapid flex should I still go for my anhydrite sticky and will it be ok on the primer

 

[Qwerty]

Ajax is the man to answer this, but I wonder if the laitence has been removed?

This is a good read.... http://www.tilersforums.com/18-tile-adhesive-grout/35200-method-prep-priming-anhydrite-screeds.html

 

[mike1979]

Ye the laitence has been removed thanks

 

[Qwerty]

Sounds like it could be an epoxy primer

 

[Ajax123]

It sounds like either tilemaster prime plus or f ball and co p121 primer. Both are acrylic. I personally would not use cement adhesive regardless. The other potential issue if they are putting that much primer on is that it may cause a problem itself due to love if penetration into the screed surface. Give it a damned good rub to see if it peeks off or not....

 

[widler]

Im never happy about putting all this primer on ' 1 coat at 3-1 and one neat '

I always find that a neat coat just peals off like glue with your finger nails.
Surely this is not good , especially on walls, it would compromise weight issues

 

[Stef]

I had TileMaster prime plus peeling off at a 3:1 mix, started using it at 4:1 & it was perfect.
I only use one coat & that is enough.