Keeping your RV roof clean isn’t just cosmetic — it’s functional. Dirt, algae, bird droppings, and tree sap are mildly acidic and degrade roofing materials over time. Regular cleaning extends membrane life, makes inspections easier (you can actually see what’s happening up there), and keeps your roof from becoming a slip hazard. Here’s how to do it right.
Products to AVOID
This is the most important section in this article. Using the wrong cleaner on an RV roof causes irreversible damage and voids your warranty. Avoid: petroleum-based cleaners (they degrade EPDM rubber), citrus-based cleaners (acidic, attacks rubber), household pressure washers set above 1,200 PSI (drives water under membrane edges), bleach solutions stronger than 3% (degrades rubber and polymer coatings), any cleaner containing acetone or solvents. If you have a polyurea coating, check the manufacturer’s approved cleaner list — most approve mild dish soap or approved RV roof cleaners.
Products to Use
The gold standard for EPDM and TPO roofs is a dedicated rubber roof cleaner — products like Dicor Rubber Roof Cleaner, Camco Pro-Strength, or similar. For fiberglass and coated roofs, a gentle car wash soap (pH neutral) in a bucket with a soft brush works well. Always rinse thoroughly with a garden hose. For algae and mold, a diluted solution of white vinegar (1 part vinegar, 4 parts water) is safe on most surfaces and effective on biological growth.
The Cleaning Process
Work in sections from front to back. Wet the section with water first, then apply cleaner with a soft-bristle brush (a car wash brush on a pole is ideal). Scrub gently — you’re not trying to sand the surface, just lift surface contamination. Rinse completely before moving to the next section. Don’t let cleaner dry on the surface.
After Cleaning: Inspection and Conditioning
A clean roof is the perfect time to do your 10-point inspection. You can see everything clearly, and any issues are obvious. On EPDM roofs, follow cleaning with an EPDM roof treatment that conditions and UV-protects the rubber — think of it like a tire dressing for your roof surface. For coated roofs, check with your certified applicator for recommended maintenance products.
Questions about your specific roof cleaning situation? Our community forum has active threads on this exact topic, with members who have tried dozens of products and can tell you exactly what worked.