Priming ?

[s collins]

I need a bit of advice about priming
I've got some durabase ci+ and it's going down on sand/cement with in screed ufh
It's now been down for a couple of months so is dry
I've purchased some bal flexi and was wondering if it need priming first ?
I've got some apd for the plastered walls
If I need any thing which would use
The apd or should I get some sbr
As I'm a little worried the the floor could suck the moisture out of the adhesive before it sets
Oh and it's ins wetroom
Thanks Simon

 

[Aston]

i would say it will be very dry now!.
its easy to test, just brush some water onto the surface and see how much and how quickly it sucks it up.
if its absorbing really quick, control the suction with a weaker more absorbing 1st coat of primer, then apply the next coat at a stronger ratio so it bonds to the floor and then away you go...

 

[s collins]

Thanks
But which primer should I use ?

 

[White Room]

If the floor is dusty or absorbent prime with your Apd...1-1.

 

[s collins]

Thanks