bought this to fix a small problem on the roof of our RV. The dealer suggested this product to repair it so there would not be any leaks. We only put it on a month ago, so far so good. We have not had a lot of rain since we applied it. It was east to apply and only took a few minutes. I have been told good things about this product from other RV users.
Rating: [5 of 5 Stars!]