Damp stains can only be blocked if the cause of the damp has been cured. As well, we do not recommend this primer in bathrooms or areas with a lot of humidity as … The gennex primer is softer and results in a fine hairline cracking all over when you put Breakthrough over it. So, wait and see what happens. On the occasion when I do talk to the tech folks, they are usually more forthright about product compatibility issue, etc. There are no trackbacks for this post yet. Apply first coat of knotting solution to knots. Then painted over with emulsion paint & the finish is perfect. 28 Dry time: This primer dries to the touch in 30 minuted and can be recoated in 1 hour. How to plan and fit a new bathroom, along with advice on repairs such as fixing taps, and unblocking a toilet. To find out how easy it can be watch our video below our follow these step by step instructions! I am not sure and not really sure anyone could say for sure but I would rather have it directly on the wood. I left 24 hours between each application. Gardz seals in the paste residue to help prevent the mud cracking effect. ), and after I first became aware of it, maybe 10 or so years ago, it has become a stock item in my decorating supplies. I am at the second step, and have just applied my first coat of Zinsser BIN with a gloss roller. Quick turn, blocking on poplar, sand, great surface base for topcoats, enamel holdhout.