Mickey: I applied the liquid rubber to the roof of our camper and after a few minutes it started to bubble up. Whats going on? What do you guys think? EPDM Coatings: Thanks Mickey. Bubbling is normal. It is part of the curing process. Normally it will take anywhere from 5-10 days for all the bubbling to cure. Mickey: Hey, You were correct. I went on the roof this morning and was amazed. It looks great. Thanks for the help. The product is amazing!