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?

Comments for Marine plywood treatment

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by: Hugo

The epoxy resin saturated into the aged plywood will also substantially strengthen it as well as waterproof it.

Plywood restoration
by: Hugo

Use epoxy resin thinned down with acetone at first to penetrate the inner grain of the plywood.

This will totally seal it.

Apply several coats each time a bit thicker.

You may also consider mixing in fine sawdust with the resin or other form of two part epoxy marine glue for final top coats to build up the thickness of the outer layer.

Later, sand and clean thoroughly with thinners before applying primer coat and top coats of paint.

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