Expansion Joints

Expansion Joints

Buildings in Los Angeles can be made from a variety of materials.   Expansion joints are used in a variety of applications to accommodate for those materials’ movement.   Clay masonry, Exterior Insulation and Finish Systems (EIFS), and stone are all examples of substances that may need expansion joints when used in construction.  Without these joints, various types and amounts of damage could occur.  For instance, clay masonry will expand when it is exposed to water.  If this is not accounted for by the use of expansion joints, spalling, displacement, and other damage could arise.

When a building is constructed, expansion joints should be built into key areas.  For instance, in clay masonry, the joints are placed at corners, at predetermined intervals, and at other such areas.  As with most joints, sealants may be needed to keep moisture and other elements out of the joint.  Should moisture seep into such areas, it could result in damaging effects.  Thus, maintenance of the joints is essential.  An important aspect of maintenance is to replace the sealant at regular time periods.  If any damage occurs because the expansion joint or its sealant has failed, a professional should be called to take care of it.  They can help ensure that building will remain strong and sound.