3M 5200 Marine Sealant et al
I currently go over my camper religiously looking for chances of leakage at least every six months. Seams on the roof, windows, etc. are checked for any signs of cracked sealant or separation. I treat...
Forum Discussion
I never use Dicor and always use Sikaflex
https://smile.amazon.com/gp/product/B00461GOKY
https://smile.amazon.com/gp/product/B000KKOO5M
Also if you're worried about water intrusion, you should do a positive pressure test. I saw the instructions on how to do it here in this forum but basically the process is seal up windows and other known gaps with tape. Tape a piece of cardboard with a hole in it in a window or door and then tape the end of a leaf blower on it so you can pressurize your camper.
Then use soapy water to find the air leaks.
https://smile.amazon.com/gp/product/B00461GOKY
https://smile.amazon.com/gp/product/B000KKOO5M
Also if you're worried about water intrusion, you should do a positive pressure test. I saw the instructions on how to do it here in this forum but basically the process is seal up windows and other known gaps with tape. Tape a piece of cardboard with a hole in it in a window or door and then tape the end of a leaf blower on it so you can pressurize your camper.
Then use soapy water to find the air leaks.
