Cleans and Protects in one application. No two step system needed. Extends the life of your rubber roof matting by cleaning and conditioning in one easy application. Professional strength, non-petroleum formula safely and easily cleans streaks, oxidation and road film as it moisturizes, conditions and preserves your rubber roof. We recommend that you clean, condition and protect your rubber roof at least twice a year. This will help prevent mold, mildew and fungus growth as well as give your roof that continuous new look and provide added years to your roofs life. Do not use a silicone protect on your roof as it will actually attract mildew and fungus growth. 128 oz. bottle.