How often should sealants and expansion joints be replaced?

Sealants and expansion joints are essential for maintaining waterproofing and structural flexibility in commercial and institutional properties. Their lifespan typically ranges from 5 to 15 years, depending on material quality, building movement, weather exposure, and installation practices. In New England, regional challenges like freeze-thaw cycles, heavy snow, wind-driven rain, and salt exposure can accelerate wear, especially on joints located at facades, roofs, parking structures, and other high-movement or high-exposure areas.

Degraded sealants or failed expansion joints can lead to water intrusion, façade deterioration, and ultimately impact the integrity of building envelopes. Common early warning signs include visible cracking, loss of adhesion, shrinking, splits, or water infiltration near joints and transitions. Regular professional inspections are recommended, typically as part of a broader building envelope maintenance program. Most facility managers and property owners in the region incorporate annual or biannual evaluations to catch early sealant issues, as well as scheduled proactive replacements based on manufacturer guidelines, historical performance, and site conditions.

Best practice includes not waiting until failures are visible. Planning periodic sealant and joint assessments, especially after harsh winters, significant weather events, or major building movement, helps protect long-term asset value and minimizes costly repairs. Timely replacement and proper installation using manufacturer-approved commercial-grade materials are essential for maintaining waterproofing, preventing structural damage, and ensuring code compliance.

For buildings with unique exposures, such as parking garages frequently exposed to salts or historic structures where joints contribute to preservation, specialized evaluation and replacement schedules may be appropriate. Consult with a professional envelope contractor such as ESI Waterproofing & Masonry Restoration, Inc. who is familiar with New England conditions to develop a maintenance plan tailored to your facility and assets.