[wiredgeorge]

Dicor makes two kinds of sealant that you might want to look at. Self Leveling is for around roof penetrations as it spreads out some and covers old sealant nicely. The other is NON self leveling which you would use where seams are vertical or on the sides of the trailer. It doesn't run. If you get the self leveling and go around something; say a window, it will run down the side of the trailer and make a disgusting mess. The stuff can be cleaned but use the right sealant and you won't have to.



Your roof is essentially a thin rubber sheet. The rubber is BLACK and colored with a white pigment. If there are black spots on your roof, the roof is starting to wear as the pigment is gone or going. Scrubbing won't make the roof white again and you should be budgeting for a new roof.