Thanks for the vote of confidence. However, I pushed the envelope of dry a little too much. I applied the first coat (Kilz Premium) and waited about 2hrs. before applying the second coat. About 4 hours later, it rained overnight and into the next 2 days. It doesn't appear to be running off or feels soft, like I expected. It is acutally repelling and/or holding water. Granted that the application was not ideal but, I think/hope the second coat had enough time to cure properly. As far as Mfg. recommendation, everyone will tell you something different. If figure, at the most I painted 3 sides of a board, leaving at least one side to let the wood breath. I just hope the unfinished side won't allow moisture to wick up and push the paint off the deck surface from the inside out. I'll hit it w/two coats of outdoor paint at the end of the next dry spell and hope for the best.