Any humidity around the surface area (even a bit) and Superdeck will peel. This really is a comparatively new solution in my demo line up, but it really appears to be like the same these days as when I applied it to outdoor wood in Could 2015. Sand the wood http://wooddeckpainters65319.blogs100.com/6534183/details-fiction-and-how-long-does-it-take-for-deck-stain-to-dry