Immediately with mineral spirits.
If one coat application is desired, apply 1 coat at 50 sq/ft per gallon. If applying in 2 coats, apply each coat at 1 gallon per 100 sq/ft. Finished coverage will be the same, at covering 250 sq/ft of roof surface per 5 gallon bucket.. Textured, porous, and worn surfaces may require more product to cover.
Rain Safe: 60 minutes. Dry to Recoat 6 hours, Full Cure 72 Hours at 70 °F and 50% relative humidity at 2 gallons per square; dry times will be accelerated by higher temperatures and higher humidity; cooler weather, thicker films, poor air flow and low humidity can slow dry time.
Metal single ply, smooth BUR, Modified Bitumen, polyurethane foam, concrete, EPDM, Hypalon, exiting asphaltic & elastomeric roof coatings: Not for use on roof shingles