Sweep off debris such as leaves and twigs by using a soft-bristle broom before washing.
Fill a bucket with water and regular dishwashing detergent. Agitate the water to make soap suds.
Scrub the roof with a soft-bristle brush using the water and soap mixture.
Check all seams of the roof for leaks while cleaning.
Things You Will Need
- Soft-bristle brush
- Wear soft-soled shoes while working on the roof to prevent slipping when the rubber is wet.
- Use a small amount of mineral spirits poured onto a rag to remove stains from the roof.