Cleaning / Mantaining the Roof...

I would get a cleaning company with a hot water pressure washer to clean it. I have a Hotsy washer with hot water, that is all I use on my roof.

Well, I just spent about 3.5 hours up on the roof of the trailer this morning... I used soap, hot water, and sponge & medium bristle brush in tough spots. It barely put a dent in it. Everywhere the mulberries sat is extremely discolored... I tried some bleach white with the med. bristle brush and it doesn't help. I also noticed that the white coating on the membrane is worn out in several spots and the black rubber is showing through...

I also noticed (and this is bad) that the rubber membrane has broken loose all the way across the front of the trailer. I'm not sure when this happened, but it wasn't like this when I put it up for the winter. I'm going to have to post another thread on what I need to do to repair that issue...

I'll post some more pics after everything up there dries...

Whatever you use make sure you wet the sides of your trailer first. Otherwise you will have a mess from the runoff.

100 % Bleach will kill the mold. Have been using bleach for 4 years with no effect on material. Wash roof with Spic&Span first and then beach. I use a dish water bottle to control the bleach from running down the sides. Squirt some on and using a stiff brush spread the bleach around the surface. Wipe off with a wet rag and rinse with an other rinse rag. I do a 3x3 foot section at a time.

Murphys oil soap is pretty good stuff on the roof too. Spic and Span is another that works great. Wash the roof to get the loos stuff off, then let sunlight bleach out the rest. Don't park under any more mullberry trees.

Thanks for the great advice, fellas ! I'm going to make an attempt to clean it up with car wash solution and a soft brush, just to get most of the loose stuff off of the roof. I'll take a few snapshots afterwards and see what there is left... Hopefully it won't be too horrendous !

It is hard to find a difinitive answer as to acetone being petroleum based. It is used as a solvent in multible industries. I agree with 352 that it will remove that mess. I would consider other products first, acetone is also volital and should not be inhaled. Try Solvit,(800-276-8102) a small company in Wisconsin.
Non hazardous and biodegradable. Yon can use it on just about everything. It will require some effort on that roof for the initial cleaning but will be easy after. It is also inexpensive.

Click on Dicor's link below. They have a lot of useful info on RV roof care. I actually called & talked to one of their resident experts on re-caulking the seams on my RV.
https://www.dicorproducts.com/resources/for-rv-owners.php

Acetone will do it and do not anyone tell you that it will destroy your roof.