aceinspp - Eternabond is a wonderful repair tool for RV roofs and who knows what else.
Kind of like duct tape on steroids - sticks and does not let go.
You can find it on amazon or at wallymart dot com or elsewhere.
I keep a small length I bought at wally world in the coach just in case I have an encounter of the ripping kind with a tree branch or some such with my roof.
Herk and others have posted some great information on this stuff.
Here are some threads from the Forum here.
Forest River Forums - Threads Tagged with Eternabond
Hope this helps some.
Chris in Virginia
2006 Sunseeker 3100SS/LTD
2008 Smart Passion Cabriolet TOAD
1986 Honda Helix (Original owner)