Senior Materials Engineer, Law Engineering, Inc., Houston, Texas
Pages: 12 Published: Jan 1992
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.
Sealant joint failure, substrate, fillet, dimension, surface profile
Paper ID: STP14882S