LarryJM wrote:
Yea LEAVE IT ALONE ... that white stuff is the normal deterioration of the protective layer which helps provide more protection as a somewhat sacrificial layer if left alone. By trying to remove it which BTW is going to be virtually impossible you are IMO actually SHORTENING THE LIFE of your roof.
LEAVE YOUR ROOF ALONE and GO CAMPING:B:W
Larry
I agree. I'm on my second trailer and have never cleaned a roof. They are designed to work that way. Similar roofing is used on commercial buildings and gets ZERO maintenance and they last a long time. Leave it alone and go camping!