[C320-list] Subfloor for cabin sole

[David Veeneman]

I’m getting ready to replace my cabin sole with Lonseal vinyl flooring. I’m going to replace my subflooring with 3/4 plywood.

Here’s my question: What sort of plywood is considered acceptable in this application? I know that I need a smooth-surface plywood, but beyond that, what should I look for for in a plywood? Home Depot doesn’t list any plywoods as ‘marine grade’, and just about the only feature they list is pressure-treated. As a result, I’m a bit at sea on this, and any advice would be helpful and appreciated.

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David Veeneman
SV Adelante, Hull #131
Dana Point, CA