Trailer Decking Finishing

[chipj29]

Originally Posted by thinkxingu

Ok, so I'm hearing regular plywood with good sealing or standard pressure treated (as opposed to marine).

Which plywood would give me the least splitting/most uniform/flat surface, and what would be the most durable finish?

This is mostly a utility trailer, but I also use it for my son's go-kart, our golf cart, etc. and I'd like it to last.

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I re-decked a snowmobile trailer with PT plywood, and it lasted at least 10 years. I have since sold that trailer so I don't know what it looks like now. But when I sold it, it was in great shape. I really think PT plywood is the way to go.And you never have to maintain it in any way.