Enhanced Formula Reduces Maintenance Up To 75 Percent. Enhanced Protect All Rubber Roof Treatment With UV Protectant Is A Blend Of Proven Polyolefin Compounds Engineered Specifically To Retard Roof Chalking, Minimize Maintenance And Provide Additional Protection That Can Help Extend The Life Of The Rubber Roof Membrane. The Tough Polymer Anti-Static Coating Creates A Durable Shield That Keeps Dirt And Grime From Sticking. Application Of New Rubber Roof Treatment Is Now Quicker And Easier -- Just Spray, Mop And Air-Dry. The Enhanced Formula Is Safe And Compatible For Use On ALL Types Of EPDM Rubber Roof Systems. Rubber Roof Treatment Reduces Chalking That Causes Ugly Gray Streaks Down The Side Of The Vehicle Creating More Frequent Cleanups. Roof Chalk Is A By-Product Of The Rubber Material That Occurs Most Often When A Rubber Roof Is Exposed To Excessive Moisture And Heat. Depending On Environmental Conditions, Treating Should Be Performed Two To Four Times Annually. In Drier Climates, Two Applications A Year May Be Sufficient. In Climates With Moderate To Heavy Rainfall Or Humidity, It May Be Necessary To Treat Your Roof Three To Four Times A Year To Reduce The Chalking Process. Regular Treatments Of Protect All Rubber Roof Treatment Will Help Reduce Chalking And Frequent Cleanups.