Yeah, it's thin. It's designed to be that way as you are using it in an area that you don't have the opportunity to do any surface preparation. They want to make sure it can run into any nooks and crannies. Since I had all the holes and flanges sealed up it didn't really drip out on me. When I finished using a hole to put the tube in and spray, I taped it up and uncovered the next one. It was the lower horizontal taped up holes that were interesting after spraying. Once I finished spraying the rails I slowly peeled those lower tape pieces off and let any excess drain down. I didn't want big goopy puddles at the opening. As for dry time, I'm not sure. I think I pulled all the vertical and flange tape off either after an hour or the next day. I used one can to do both frame rails. I bought two just in case. Depending on the speed with which you pull the tube along as you spray will depend on how much you go through.