303 Products RV Rubber Roof Cleaner for EPDM & TPO, 1 Gallon Concentrated Cleaner - Safe for Solar Panels, Rinses Clean

303 RV Rubber Roof Cleaner is a concentrated, environmentally safer formula designed to remove heavy dirt, grime, and buildup from EPDM and TPO RV roofs without harming solar panels or RV siding.

Routine cleaning keeps rubber roofs flexible and prevents embedded contaminants from accelerating wear. This one-gallon concentrated cleaner dilutes with water for economical use across multiple cleanings and rinses away residue so the roof is ready for a follow-up protectant such as 303 Aerospace Protectant.

How does this cleaner remove tough buildup without damaging surfaces?

The formula is engineered to break down dirt, road film, and organic growth on rubber roofing materials while remaining safe for adjacent surfaces. It rinses clean, leaving no sticky residue that can trap new grime.

• Concentrated: mix 5 oz per 5 gallons of water for general cleaning.
• Works on EPDM and TPO rubber membranes commonly used on RVs.
• Rinses fully to avoid streaking or residue on roof and siding.
• Safe to rinse off solar panels — wipe any splashes with water.

How do I apply the product correctly for best results?

Apply the diluted solution across the roof surface, agitate to lift embedded contaminants, and rinse thoroughly. Follow with a protectant product for extended performance and UV resistance.

• Mix ratio: 5 oz of cleaner per 5 gallons of water.
• Pour the solution on the roof, scrub with a soft brush or mop.
• Rinse the entire roof with a hose and allow to air dry.
• Rinse any runoff immediately on siding or panels to prevent water marks.

Is this product environmentally friendly and safe for solar panels?

This cleaner is formulated to be environmentally considerate and safe to rinse from the roof and nearby surfaces. If any cleaner reaches solar arrays, simply rinse the panels with water to remove residue.

• Biodegradable-minded formulation so rinsate is safe to wash off the RV.
• Does not require special disposal for routine rinsing from the roof.
• Solar panels remain unharmed; clean off splashes with water as needed.

What maintenance routine gives the longest roof life?

Regular cleaning to remove embedded contaminants combined with a periodic protectant is the most effective strategy to extend the life of rubber RV roofs. Use this cleaner first, then apply 303 Aerospace Protectant to help repel dirt and UV exposure.

• Clean at the start and end of camping season or as needed after heavy soiling.
• Always follow with a protectant like 303 Aerospace Protectant for UV defense.
• Store product in a cool place and use within two years of packaging date.
• Inspect roof membranes for damage while cleaning to catch issues early.

Who is this for: RV owners, campground fleet managers, and anyone who maintains campers, pop-ups, and motorhomes with EPDM or TPO rubber roofs will benefit from this cleaner. It’s aimed at people who want an effective, easy-to-rinse solution that prepares the roof for protecting treatments and helps preserve roof flexibility and appearance over time.