Hello From Ireland

[coys84]

have never heard of adhesive with primer in it!! I'll be to stand corrected though. yeah the evostik is good stuff. give it a good stir first, is there a roller supplied with it? I find it easier just to use a paint brush. General rule of tanking, if you can still see the substrate through the tanking, then give it another coat.

Nice one great advice thanks,will let you know how i get on.

 

[Gazzer]

Why are you using 9mm ply ?
Backerboards is the way to go.