SYMPOSIA PAPER Published: 01 January 1992

Difficult Sealant Joints


Many premature sealant failures occur in joints which differ from the “archetype” -- the common parallel-sided, uniform, panel-to-panel expansion joint, with an hour-glass sealant profile. Parameters are discussed for obtaining good long-term performance from non-classical types of weatherseal joints. The conditions which are addressed include problems with substrate surface profile, intrinsic properties of substrates, joint shape, and dimensions. Also presented is a summary of the considerations in preventing premature sealant failure which are common to all types of exterior weatherseal joints.

Author Information

Nicastro, DH
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Developed by Committee: C24
Pages: 189–200
DOI: 10.1520/STP14882S
ISBN-EB: 978-0-8031-5220-5
ISBN-13: 978-0-8031-1857-7