well is it fiberglass or rubber? I have a rubber base roof on my MH. I use a diluted solution of spic and span on mine . The spic and span does not remove the oil in the rubber.
Hi Frank and welcome to the best RV forum on the web. Any RV store (including Wal-Mart) will sell you a cleaner specific to your roof type, either fiberglass or rubber. Personally, I wouldn't walk on either type of roof. Just get a good ladder and wash the roof from the sides.