Not that anyone asked...
EPDM roofing material is designed for the purpose often with 25 and 50 year life spans for the actual membrane being mentioned. Most manufacturers I've checked on indicate that coatings are not required. On TT's periodic inspection and touch up with proper sealant for questionable areas is recommended.
Be very careful with what you choose to coat an EPDM roof with. Some compounds can deteriorate the material over time. Some compounds may interfere with proper adhesion for future repairs.
The are many aftermarket coating marketing pitches which will tell you their products are necessary. Personally I wouldn't use any coatings on an EPDM roof unless specifically recommended and approved by the material manufacturer. The above particularly applies to ANY coating which contains silicone.
Contrary to aftermarket coatings hype I also do not use coating/protectant on my Hypalon inflatable rubber boats because the material manufacturers recommend no coatings.
6. WHAT IS THE DIFFERENCE BETWEEN BLACK EPDM AND WHITE EPDM MEMBRANE?
In addition to the oils and the polymers used to make an EPDM membrane, another ingredient is added to the mix to enhance UV resistance. In the case of a black membrane, carbon black is added, which converts UV rays into heat. With white membrane, in lieu of carbon black, titanium dioxide is typically used to reflect UV rays and prevent it from attacking the polymer.
8. DOES EPDM REQUIRE SYSTEMATIC MAINTENANCE OR ADDITIONAL COATINGS OR TREATMENT TO ACHIEVE ITS LIFE EXPECTANCY?
No. No special coating or other surface treatment is required. General maintenance in the form of good housekeeping should periodically be performed to remove debris and leaves, and to investigate the performance of other components.
12. WHAT IS THE EXPECTED LONGEVITY OF EPDM MEMBRANE?
With many EPDM installations exceeding 40 years of exposure in the field under various climatic conditions, none of the material tested has shown alarming signs of degradation. Even though it would be difficult to predict, studies have shown aged EPDM membrane as having a potential life expectancy of 50 years.
13. CAN EPDM BE COATED OR PAINTED?
Acrylic coatings are available that can be applied directly to a prepared EPDM surface. Preparation usually consists of cleaning the EPDM with a pressure washer and a detergent solution or wash. Latex-based paint products can also be used, however, the EPDM manufacturer should be contacted prior to application to ensure compatibility and continuation of warranty coverage.
My opinion and worth everything you'll never pay for it.