"The Natural Philosopher" wrote in message ...
me wrote:
"Mark" wrote in message
...

Plywood is screwed to the floorboards.

Do I tile directly on to the plywood or should I prime it first and if so, with what?

mark

I was advised to apply watered down PVa and tile before it dries. Seems to have worked ok.
Paul
Doesn't hurt, but the only function is to stop cement drying out prematurely and boards getting wet.
Decnt ply wont suck that much anyway.

My old gaffer used to say "Stop the suction". Painting, plastering, all sorts of jobs it applies to.