Rain Armor Acrylic Primer ultra-tough, waterproofing, copolymer elastomeric coating bleed-blocking primer built for roof restoration systems. It locks down chalk and dust while sealing asphaltic oils and stains from BUR and modified bitumen so they don’t discolor the finish coat. The primer creates a uniform, high-adhesion base for silicone or acrylic topcoats, improving reflectivity and long-term performance. Fast-drying, low odor/low-VOC, and easy to spray, roll, or brush, Rain Armor helps deliver a cleaner, longer-lasting roof.