Builder Slant is a "Hybrid" sealant whih is of increasing interest because they can be formulated to provide the best properties of two or more families of polymeric materials while limiting their individual inherent weaknesses. For example, a polyether or a polyurethane polymer can be terminated with silyl groups (related to silicone polymers) to yield a high performance sealant having many of the beneficial characteristics of both polyurethanes and silicones without many of the disadvantages. The main application for these materials is as sealants in the building and construction industry; Instant Bonding of Mirrors with wood, metal, cement, stone with Neutral Sealant, Bonding with almost all kind of substrate with instant bonding & structural strength. Hybrid sealants are claimed to combine the strength of polyurethanes with the weathering resistance of silicones. In addition to their high performance properties, these sealants are achieving popularity due to their solvent-free and isocyanate-free nature and due to their formulation versatility that allows the customization of viscosity and early strength development for various applications