Most roof coatings have a life expectancy of 5-10 years depending on the roofing material.
Looking at a couple of different types of coating, a high-quality silicone roof coating could last up to 15 years when maintained properly. The maintenance includes regular cleaning and annual inspection for signs of wearing.
Elastomeric roof coating, on the other hand, could last from 10 to 20 years, depending on the application millage. Applying 20 mils of the coating means that you’ll get 10 years of warranty in return. To get the maximum of 20 years you’ll need to apply 30 mils of coating.
Roof coatings are available both colored and clear. If you think you have found the perfect shade of roof paint but want to get all the qualities of roof coating as well, it is enough to coat the roof after the painting.
To get the most of both products, make sure that all manufacturer guidelines are strictly followed. Hiring a licensed roof painter with experience could ensure the long-lasting result you are looking for.