AU-1 is an elastomeric, modified acrylic urethane sealant that is unlike the polyurethane and silicone sealants available on the market. This joint sealant uses high-performance ingredients, including Aqueous Polyurethane Dispersion (PUD), that offer the durability needed for concrete joint applications. 

Other features of AU-1 include its internally plasticized composure. AU-1 contains no plasticizers, making it more eco-friendly and more durable than other sealants. The composition allows for high adhesion and elasticity through all climates, even after years of exposure to rain, snow and sun. Once cured, AU-1 is also resistant to dirt.

In addition to these performance benefits, AU-1 is easy to apply. Mixing and priming are not required, and the product is simple to gun and tool for quick and neat application ./uploads/2023/03/au-1-joint-application-ii-noupsize-w1024.jpg

Applications for Concrete Joint Construction & Restoration:

AU-1 is ideal for various types of concrete joint construction & repair. Use this product for the following applications:

  • Concrete expansion joint sealant: Expansion joints allow a structure to move and expand without putting stress on the concrete and other parts involved. These joints are made with cuts through a concrete slab to the base material of a foundation. AU-1 maintains high elasticity through high mechanical stress, offering a durable, waterproof seal. As concrete expands due to shifts in climate, AU-1 will shift as needed to prevent cracking and keep concrete structures stable.
  • Concrete joint panels: When creating a joint between two different panels, an elastic sealant is ideal for preventing cracking when the concrete shifts. In addition, the sealant needs to offer durability and adhesion to maintain the integrity of the structure. AU-1 provides both durability and adhesion through all climates to ensure the stability of the structure.
  • Tilt-wall joints: Tilt-up concrete walls use a series of tilted concrete panels to form an exterior wall. Elasticity is required for any concrete joints, and tilt-up walls also need ease of application to keep the process moving effectively. AU-1 does not require any mixing or priming, and it's quick to gun and tool, with soap & water clean-up. Tilt-up, or precast panels can be placed efficiently with the help of AU-1, and the product will last through years of weather and concrete expansion.

The Right Size for Any Application:

We carry AU-1 in various packaging sizes:

  • 10.1 oz. cartridge
  • 20 oz. sausage
  • 2 or 5 gal. pail

AU-1 also comes in various colors to support your applications. Choose from:

  • White
  • Almond
  • Aluminum Gray
  • Black
  • Bronze
  • Clear
  • Limestone
  • Redwood Tan
  • Stone
  • Clay
  • Tan
  • Textured White
  • Woodtone

At TOWER® Sealants, we maintain a stock of AU-1 sealant for concrete joints, and we are ready to ship the moment you need a supply. When you order AU-1, we offer lead times as fast as 2-5 days.

Contact TOWER® Sealants:

TOWER Sealants offers a revolutionary product for concrete joint sealing. AU-1 is UV-resistant and waterproof with high elasticity, and it offers simple preparation and cleanup. Contact us today to learn more about AU-1, or find out where to buy near you. For dealers, explore our resources for selling our products in stores.

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