For fast-track schedules, Vulkem 360NF/ 950NF/951NF polyurethane deck coating system is a versatile, low-odor basecoat that can be applied to any thickness desired and in sloped areas where build is critical. When mixed with a catalyst, it will cure in three hours without pinholes or gassing. The fast-cure, high-performance, tough topcoats reach a hardness comparable to epoxy within 24 hours, allowing for even the abuse of vehicular traffic. Tremco Commercial Sealants & Waterproofing. 800-321-7906.