Products / Karnak 502 RC-W Elasto-Kote

Karnak 502 RC-W Elasto-Kote is a two-coat reflective thermoplastic rubber roof coating system sold as a gray Base Coat, which includes a rust inhibitor, and a single component Finish Coat applied over it. The maker lists the system for metal roofs, spray polyurethane foam, TPO and most PVC membranes at least four years old, previously coated surfaces, and over 405 Bond-N-Shield on smooth built-up and modified bitumen roofs. Both grades' product pages list ASTM D6083 Type I (except solvent based) and 715 percent nominal elongation by ASTM D2370. The Finish Coat page lists solar reflectance of 0.85 initial and 0.72 three-year aged and an SRI of 107 initial and 89 three-year aged for the finish coat. Both grades are sold in 55 gallon drums, 5 gallon pails and 1 gallon cans.