How to Remove Black Streaks from an RV
Updated October 9, 2026 3 min readBy Dominick, owner of Slums Mobile Detailing
Those black streaks under windows and roof edges are the number one RV complaint.
How do you get black streaks off an RV?
Black streaks come from roof runoff carrying dirt, sealant residue and oxidized roof material down the sides. Remove them with a dedicated RV black-streak cleaner and soft microfiber — never abrasive pads — then wax the sides so new streaks wipe right off.
Prevention
- Keep the roof clean
- Wax or seal the sides
- Add gutter spout extenders