Joint Sealants

When joints fail, leaks and damage to buildings follow. this technical review of sealants can help ensure that your buildings stay tight and dry.

15 MIN READ
Building joints move in three different ways that affect the sealant in the joint: expansion, contraction, and shear.

Building joints move in three different ways that affect the sealant in the joint: expansion, contraction, and shear.

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 www.bsdsoftlink.com/library/guides/div07/079200.htm 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 www.bsdsoftlink.com for more information.

About the Author

No recommended contents to display.

Upcoming Events

  • Archtober Festival: Shared Spaces

    New York City, NY

    Register Now
  • Snag early-bird pricing to Multifamily Executive Conference

    Newport Beach, CA

    Register Now
  • Elevate

    Miami, FL

    Register Now
All Events