Marine plywood treatment
by Bernie Morin
(North BAY, Ontario, Canada)
I have a plywood boat ('66 Chris Craft Cavalier) and it has been painted several times over the years.
I noticed that some of the sanding processes have taken the plywood down past the first layer of the plywood which exposed some of the plywood grain.
I find it hard to seal it up so that the paint doesn't soak through as the grain lines are still visible in some areas.
What kind of preparation/sealer should I be applying to these areas so that I get a good finish and seal of the grain?