Re: Sealing a roof
Check out this stuff:
http://www.inlandcoatings.com/rc2000.htm
RC-2000 Rubber Roof Coating by Inland Coatings. Cost me $205 for 5 gallons.
I used this in lieu of gluing down EPDM roofing on my RV.
It can be rolled on with a paint roller, like I did to mine. Acutally painted it directly onto a new OSB roof on my RV. You can seal up your crack/splits with a sealant and then paint the entire roof, over the EPDM/rubber with this stuff.
After you roll it on, it will expand slightly, getting thicker. Very bright white color that reflects the UV rays. I put 2 coats on my 32' RV using the 5 gallon bucket. You can paint it up onto the roof vent bases to seal them, too.
We have been through a wet fall and now into winter (cold) with no leaks, cracks of splits. The roof looks as good today as the day I painted it on.
You can read more on my "repairs" in this thread:
http://www.rvusa.com/forum/mbbs22/forums/thread-view.asp?tid=12074&start=26&posts=44
Good luck with the Repairs!