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Willseal Seismic, a pre-compressed, self-expanding open micro-cell polyurethane foam impregnated with a hydrophobic, acrylic polymer and coated with a factory-applied silicone sealant.

Willseal Seismic

Pre-Compressed Expansion Seal

Willseal® Seismic is a pre-compressed, self-expanding open micro-cell polyurethane foam impregnated with a hydrophobic, acrylic polymer and coated with a factory-applied silicone sealant. It is designed to provide a watertight, dust-proof, noise-reducing, thermally insulating, and UV stable primary seal that does not require invasive anchoring for installation.

Basic Uses

Typically used as an external joint sealant, Willseal Seismic can be used as a primary seal in vertical applications. The following are acceptable applications for Willseal Seismic:

  • Primary expansion, control, isolation joints
  • Primary construction joints
  • Retrofit and seismic joints
  • Vertical expansion joints (Willseal Seismic HS for horizontal joints)
  • Joints in pre-cast concrete, masonry, brick and facades
  • Exterior insulation finish systems (EIFS)
  • Exterior panel systems (masonry, granite, metal, curtainwalls)
FAQ
  • No frequently asked questions for this product
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