6 Best RV Cleaner For Fiberglass in 2026: A Practical RV Guide

LIQUISHINE Black Streak Remover is a spray made for RV sidewalls, specifically fiberglass and painted surfaces where streaks from rain runoff show most. The listing says it works wet or waterless, with 30 to 60 seconds of wait and a wipe.

Against Meguiar's M50, it removes streaks rather than polishing the surface.

STAR BRITE Instant Black Streak Remover is a large-size spray targeting streaks from water runoff and exhaust stains, and doubles as an all-around cleaner and degreaser. The listing says it cleans without damaging surfaces, wax coatings or decals.

Compared with LIQUISHINE Streak, it covers more jobs including marine, auto and siding work. Compared with Pure RV Shower Cleaner, it is an exterior product.

LIQUISHINE Roof Cleaner is sold for RV roofs and says it is safe for TPO, PVC and fiberglass roofs, with built-in UV protection and a 30 to 60 second dwell before a light scrub and rinse. It is designed to remove dirt and grime without excessive effort.

Against LIQUISHINE Streak, it is for roofs, not sidewalls.

Liquid Rubber RV Smart Cleaner and Conditioner is a 1 gallon citrus-based cleaner for EPDM rubber roofs, fiberglass, metal and wood. It has no VOCs, acid, chlorine or bleach and applies with a brush, broom or garden sprayer.

Compared with Meguiar's M50, it cleans without polishing.

Meguiar's M50 Marine/RV One-Step Cleaner Wax is a 32 oz product that removes light oxidation, haze, minor scratches and swirls and leaves protection. It uses non-abrasive cleaners and polishing oils.

Compared with the streak removers, it restores a dull finish rather than dissolving streaks.

Pure RV Shower Cleaner is a 32 oz spray for fiberglass and plastic RV bathrooms that dissolves hard-water stains and soap scum in 2 to 3 minutes. It is bleach-free, ammonia-free and low odor with a citrus scent.