Willseal® STC

Sound and Dust Barrier

Willseal® STC is a compressible type joint sealant for both static vertical, and horizontal joints on a vertical plane, for use in applications where interior sound control is needed. Not intended for movement joints. Comprised of a fire resistant acrylic impregnated polyurethane foam with factory coated silicone sides, STC can be color matched to blend in with the surrounding and for a better aesthetically pleasing appearance. 

Typically used as an interior joint seal that blocks sound, dust, drafts, heat and cold in interior spaces such as offices, quiet rooms, lobbies, and conference rooms.

Basic Uses
  • Window to wall
  • Moveable or permanent partitions
  • Head of wall
  • Curtain wall
  • Partition to wall
Product Details, Safety, and Installation