Re: washing rubber roof
Welcome to the forum Neal. Ken from GTS that sells the SunnyBrook line will be able to tell you how best to do the Sunnybrook.
Here is info that might help
Rubber Roofs:
If your motor home, travel trailer or fifthwheel was made in the last few years, chances are it has a rubber roof. It's not the natural latex rubber we normally think of though. It's a material called Ethylene Propylene Diene Monomer (EPDM) which is specially made for roofing. EPDM rubber roofing membrane is made to last 20 years or longer and usually has a 10 to 12 year guarantee, depending on the brand.
EPDM manufacturers advise that rubber roof membranes do not require the use of any protective roof treatment or roof protector product. The only maintenance recommended is cleaning the roof four times a year.
If you have owned a rig with an EPDM roof for a few years, you've no doubt noticed that the roof surface is chalky. Manufacturers say not to worry, this is a normal process of age and, and that even after 10 years, only 10 percent of the material is lost due to chalking. Plenty of roof is left.
Regular cleaning will reduce chalk buildup and minimize white streaks on the sides of your RV. The correct cleaning product is of great importance for your EPDM rubber roof. Never use cleaners or conditioners containing petroleum solvents, harsh abrasives or citric based cleaners on your EPDM roof. Using such solvents will cause irreparable damage and will most likely void your warranty. If you are uncertain about what is in the product, don't use it. Of course each EPDM manufacturer recommends using their own brand of cleaner, but all approve the use of mild laundry detergent.
While EPDM rubber roofing does not need to be protected from ultra violet rays (UV ) and ozone, the manufacturers do approve 303 Aerospace Protectant as a safe way to resist staining and make future cleaning easier.
To reduce the expense, you may want to treat the whole roof once a year and do only the part of the roof that can be seen from the ground the rest of the time.
After the roof is clean and before you climb down, be sure to inspect all the roof seams, around vents, etc., to make sure the caulking is still in good condition. While you1re up there you might as well check the condition of all vent covers, the air conditioner cover and the TV/satellite antenna, etc.