This is a rather lengthy utube video of the Liquid Roof product. They say it will work on the f/g roof that is on the Airstream Land Yachts.
Looks like a good product if applied to a clean surface.
Fix your RV roof Leak Once Guaranteed! - YouTube
No matter what product you use, it will only be as good as the surface allows adhesion. Proper preparation is the key.
Originally Posted by bro
I did my entire roof last year with Liquid Roof. I didn't have any leaks per say but I did have some old screw holes, etc. Haven't had any leaks or problems other than a friend climbed up on the roof to check it out before it was completely cured and left an imprint of his foot where he turned to change direction.