MULCO^® SUPRA EXPERT^™ is a super-durable, thermoplastic, one-component sealant that dries by solvent evaporation. SSUPRA EXPERT^™ is formulated to seal outdoor joints between door frames, window frames, siding, glass and more. With excellent adhesion to a variety of building materials such as concrete, masonry, painted or anodized aluminum, steel, glass, fiberglass and more, SUPRA EXPERT^™ is the ideal choice for almost any exterior project.