Home

Emseal™

AST is a self-adhering tape seal made from resilient, open-cell polyurethane foam impregnated with a water-based acrylic-modified asphalt emulsion and then compressed to a sealing density level appropriate to the application. Typically, higher compression levels are required for water tightness in water run-off applications; lower compression can be used, for example, for snow seals at roof ridges. AST replaces and outperforms liquid and butyl-tape sealants as well as closed-cell and unimpregnated open-cell foam closures.

AST sealant tape is used to seal out dust, air, wind-driven snow, and moisture through joint details in metal buildings and roofs. AST is ideal as a filler in expansion/compression joints subject to movement from thermal expansion and contraction, and as a gasket in mechanically fastened, non-moving applications such as lap seams. AST is suitable for use against metal, plastic, wood, concrete, and other materials common in metal building structures.

FEATURES

  • Will not dry out and become hard and brittle
  • UV-stable
  • Highly resistant to bugs and vermin
  • Will not extrude from between joints like caulk or butyl tapes
  • Conforms to contours and fills gaps
  • Maintains a seal during thermal expansion and contraction  of building panels
  • Excellent compressibility and recovery (minimal compression set)
  • Good thermal and sound insulator
  • No shrinkage or blow-out due to closed-cell breakage
  • Supplied with self-adhesive on one side. After removal of  packaging, material begins gradual expansion – more slowly  in cold weather than in hot.

Providing Alternative Fastener and Foam Solutions!™

For Further Inquiries Call

1-800-537-4160

You can request a quote by contacting our customer service team via email, phone, or by clicking the button below and filling out our contact form.

Providing Alternative Fastener
and Foam Solutions!™

Subscribe to Our LCF eNewsletter

Name(Required)
Privacy(Required)