AU-1 Commercial Construction Sealant

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Premium-Grade, High-Performance, High-Movement, Single-Component, Construction Sealant

AU-1 is a highly elastic, non-sagging, high-performance construction sealant with extreme resistance to aging. Uniquely formulated from state of the art ingredients, including Aqueous Polyurethane Dispersion (PUD), which makes it an ideal sealant for commercial and industrial applications. AU-1 requires no mixing or priming to bond at the molecular level to most construction materials. AU-1 is paintable and will never bleed through the paint finish or create tacky surfaces, making it resistant to dirt pickup. Once cured AU-1 is exceptionally resistant to mold and mildew. AU-1 has outstanding UV resistance and maintains high elasticity and adhesion in all climates even after years of exposure. It is VOC compliant nationwide including all CARB and SCAQMD requirements. AU-1 can be used with confidence in all weather conditions and does not lose elasticity under constant, varying mechanical stress.

  • ASTM C-920 Type S, Grade NS, Class 25, Use NT, M, G, A & O
  • Exterior vertical sealing applications
  • Excellent unprimed adhesion to most construction materials including: concrete, glass, aluminum, wood, vinyl, stucco, EIFS, Hardie board, and vapor barriers
  • Exceptional resistance to UV and aging; unaffected by sunlight, rain, ozone or extreme temperatures - won't fade, crack, craze, or revert
  • 50% joint movement, 800% elongation - withstands all weather conditions and will not lose elasticity under constant, varying mechanical stress
  • 99% recovery and low stress relaxation - keeps shape and exerts less strain on bonded substrates when under stress
  • Paintable  - won't react with or revert coatings reducing dirt pickup
  • Low VOC <1.5% - meets VOC requirements in all 50 states including CARB and SCAQMD
  • Soap and water clean up - no solvents required



Download (.doc): AU-1 Guide Spec



Click for a Link to the Current AU-1 Specs