Last winter I had the same situation with Krylon sprays. I had a few
small projects and decided to spray bomb them with clear over Minwax
water base stain. The boxes I wanted to spray were a week dry but both
Krylon Acrylic Crystal Clear & Trilpe-Thick Crystal Clear Glaze both
fogger up something terrible after following the directions to the
letter. Through e-mail communication the conclusion was humidity. I
live in Florida which is notorious for humidity but it was winter so
I'd say it was about 40 to 50%, which is considered low for here. The
plus side worth noting are the people at Krylon were very apologetic
and even offered to send me two new cans, which I guess I can still
get but for small projects I'll stick with Rust-Oleum Lacquer High
Luster, which I never had a problem with even in summer... Ray,