Discover the Boss 535 - the preferred choice among roofing professionals for its exceptional qualities. This high-quality sealant, formulated with Polyurethane, stands out as a 1-component, professional-grade solution designed to meet the rigorous demands of the roofing industry. Choose Boss 535 for a sealant that excels in adhesion, flexibility, and durability – meeting and exceeding the expectations of roofing professionals in every application.