Karnak 5-Gal. 502 RC-W Elasto-Kote Self Priming Base Coat

502 RC-W Elasto-Kote Base Coat is a self-priming, highly elastic, thermoplastic rubber, single component, coating with a built-in rust inhibitor to be applied as a base coat prior to applying 502RC-W Elasto-Kote Finish Coat.USES: 502 RC-W Elasto-Kote Base Coat is intended for use on metal roofs (includes a rust inhibitor), spray polyurethane foam roofs, EPDM, TPO, and most PVC roof membranes. Also good over previously coated surfaces as well as for coating concrete, concrete block, brick, cinder block, stucco and wood. May be applied over 405 Bond-N-Shield Base Coat over smooth BUR and smooth or granule modified bitumen membrane roofs. PVC and TPO roofs should be at least 4 years old before coating.