Tower Sealants AU-1 Commercial Construction Sealant per 5 Gallon Pail - White

Tower Sealants AU-1 is a highly elastic and extremely durable high-performance construction sealant. It is an aqueous-based urethane acrylic polymer and one of the first high performance sealants of its’ kind for the commercial building industry. The active ingredient in AU-1 is an Aqueous Polyurethane Dispersion. As internally plasticized resin it requires no mixing or priming to bond molecularly to most construction materials.

AU-1 is paintable with no shine through or plasticizer bleed. It has very low VOC content meeting both CARB non-chemically curing sealant VOC (less exempt solvents): less than 1.5% and SCAQMD (less water and exempt compounds): less than 50 g/L requirements. AU-1 is extremely UV resistant and maintains high elasticity in all climates. It maintains its adhesive force even after years of exposure by bonding to surfaces through crosslinking on a molecular level. Once cured has exceptional mold and mildew resistance. AU-1 does not lose its elasticity under constant, greatly varying mechanical stress.