PPC RC WB Epoxy Primer is a two-component, water-based epoxy primer engineered to improve adhesion on difficult roofing surfaces before applying a topcoat or coating system. Doubling as a masonry block filler, its versatile thixotropic formula bonds effectively to built-up roofing, galvanized metal, modified bitumen, PVC, SBS systems, plastics, wood, and masonry. With a 40-minute pot life, topcoat-ready in 2 to 3 hours, and certified under UL 790, FM 4474, CRRC, NSF P151, and Miami-Dade approval, it enhances system durability and fills surface imperfections for a consistent, high-performance base coat.