My plywood (hydrotek 1088) got rained on in transport. It has water marks but is not to be finished bright. I spent two hours yeasterday sifting through each of the two dozen pieces (hot south Texas day!) and can say everthing is bone dry. I can also say plywood gets heavy and is a PITA There are water marks, plenty of them. A judicious effort with 220 grit sandpaper lifted an inch of one them so I think its just superficial. They are not warped. They are lying flat under a shed roof of a 26 foot long work shop, sitting on top of evenlyspaced 4 by 4's laid across a leveled bed made of 2 by 6's. No dew falls under there, and scrap on top and around the sides would protect from blowing rain, which is uncommon from the exposed direction. They are lying lengthwise against the wall in the center, under the shed roof, which extends about 3 feet beyond them (7 feet of roof over head, the whole length of the wall). I'll be working slowly, so they will be there awhile. If I must rethink it, so be it and I'll get 'em moved in the work shop. What do folks think? Cover with tarp? If so, plastic or canvas that can "breathe"?
Thanks for any advice,