Silicone caulk curing
During the hottest days of summer, with low humidity, I seam-sealed my new WB SuperFly with Permatex windshield sealant (this stuff). 36 hours later it was still soft. A Google search revealed that silicone caulk cures in teh presence of water, so I used a mister bottle on the seams. Next day it was cured (hard) but as noted by others, it still felt "tacky" as it was squeaky clean. Talc took care of that.