Before cleaning mold from the outside of an RV, wet the entire RV down and remove any debris. Work in 3- to 4-foot sections using a long-handled brush. When removing mold from the roof of an RV, have a second person on the ground to rinse the sides of the vehicle. When working in direct sunlight or temperatures over 90 degrees Fahrenheit, keep water flowing over the paint to prevent damage.
When cleaning the roof of and RV, start at the opposite end and work backwards toward the access ladder. Clean skylights and roof vents with a soft sponge, and gently scrub the sealant around these openings. To remove mold from exterior canvas surfaces on an RV, spray with a mixture of equal parts water and vinegar, and scrub with a stiff-bristled brush.
To remove mold from inside the RV, spray hard surfaces with a solution of four parts water to one part bleach. Rinse the area with clean water and dry well. Launder removable seat covers and curtains with detergent and 1/2 cup Borax dissolved in hot water. Spray cushions with a solution made from 1 teaspoon of liquid dish soap, 1 teaspoon of Borax and 1 quart of water and scrub with a soft-bristled brush.