Below are a few products for coating roofs white.
We have worked with these sellers in the past. Each product is certified by the Cool Roofs Rating Council, CRRC is a non-profit organization that rates the “radiative properties of roof surfacing materials". You can always do more research on which distributor and product seem right for your project!
Nationwide Coating Companies
Great White Coatings
Great White Coatings is a nationwide distributor of high performance cool roof products. Their coating products deliver superior results on multiple surfaces including metal, asphalt, modified bitumen, concrete, EPDM, TPO, PVC, KEE and Hypalon roofs.