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out door furnirure marine plywood7/7/13
Any opinions about using marine plywood of Okume or Sapele to make unfinished outdoor benches?
Will plywood delaminate?
Yes, left unsheathed, all plywood will fail PDQ. Exposed plywood is only recommended when clad with epoxy/mat coatings, as in boat building. Straight painted plywood is a mortal sin.
Marine plywood can be used painted or varnished on vertical or sloped surfaces (really sloped, like 15+ deg. off level) but never unfinished or unbanded. For horizontal, sheath with glass/epoxy, then paint or varnish for uv protection.
Marine playwood can be used painted or varnished on vertical or sloped surfaces .