I am reboarding a trailer with plywood. it is the outdoor type ply (is it called WBB - i cant remember!).
What is the best thing to paint it with? would varnish protect it better or should i just use some of the wood preservative stuff like you paint on the fence?
Fence treatments are made for rough surfaces like sawn timber. Try a woodstain/treatment like this
Easier to get a good finish than with varnish & it doesn't peel or crack.
The very best solution is to hit a marine chandlers and get whatever they recommend for ply.
Used to be two pack paints - epoxy? anyway these go on like treacle and set to a rock hard impervious finish, which can be polished wonderfully.
All the varnishes are, is a non pigmented version of the same thing.
Fence/shed preservative would be cheaper and quicker, and OK if you don't mind your trailer looking like a shed on wheels. You will get a better finish using an exterior varnish/wood stain.
thanks guys - looks like i need some varnish!
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