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You do know they have "Wolmenized or pressure treated plywood", if these are not to your liking, you can use a polyurethane but the edges will be your problem areas, the edges have to be completely sealed, (to do this is time consuming) I wouldn't use a deck sealer, this could delaminate the plywood. If the project is indoors, but in a damp or humid area, you can apply a "Vinyl sealer", 2 coats, and then apply a "Pre-cat Lacquer, 2 to 3 coats. Both these products are available for about $28.00 a gallon, AT: * http://www.hoodfinishing.com/

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15y ago
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12y ago

You cannot do that. The is NO WAY you can do that.

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Q: How do you waterproof plywood and how much?
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