So last week I had a mobile rv service come out to my house to install a new foam gasket under the ac unit on the roof. I didn't think there would be any problems with this. The guy is not up there more than 2 minutes and said there is a major problem up here. So I went up there to see what the problem was. Turns out that just on the outer edge of the ac about 3" away the roof is rotten. I almost put my hand through the roof. I asked the guy how much to fix it and told me it would be about 10K to do it since it would be a complete tear off and redo. I was upset and did some research because there had to be a cheaper option. Long story short: I am going with RV ARMOR. It is half the price of a rubber roof and is guaranteed for life. I have watched their videos and seems to be a very good product.