Related Products

  • Gaskets. Hollow, preformed strips, usually rubber, which are overcompressed before insertion into the joint.
  • Compressible foam sealer. Plastic foam strips that are overcompressed before insertion into the joint.
  • Accessories. These include materials that are typically required for joint sealants, such as backer rods and bond breaker tape.
  • Manufactured expansion joint covers. Used instead of sealants for big joints that have large movement, such as building expansion joints and seismic movement joints.
  • Fire-stopping sealants. Used for closing openings in fire-resistance–rated assemblies; specified in a separate section.

    The following types should be specified with the affected work, rather than in the joint sealants section:

  • sealants used as adhesives;
  • sealers used to join sections of roofing and waterproof membranes;
  • joint fillers and sealers that must be installed as part of a manufactured or fabricated assembly; or
  • sealants and gaskets used to install glass and plastic glazing, including those for structural glazing.

    References and Sources

    Visit for a complete bibliography, including links to free design guides, ASTM standards on sealants, laws and regulations relating to VOCs, and principal sealant manufacturers.

    Susan McClendon is executive vice president of Building Systems Design, the publisher of BSD SpecLink, the automated specification software service. Visit for more information.