The 5 YO roof on my Coleman is starting to show black across the trusses, which is the coating wearing off. Last fall when I washed and protected the roof I tried scrubbing to see if it was on top or ...
2 Votes for Hengs. My roof is trailer total length is 28', so rough estimate 26' of roof(but will measure for sure). Sounds like 3 gallons would be more than enough to cover it.
Of course open to hear what others have used, it will be at least a week or more before I will even be able to touch the roof, I still have to get it out of the barn.