What are the most commonly overlooked maintenance issues in commercial buildings?

Several maintenance issues commonly go unaddressed in commercial buildings, leading to long-term damage if not properly managed. Failing sealants around windows, doors, and expansion joints are a frequent oversight. These compromised areas allow moisture intrusion, which can be particularly problematic in New England, where freeze-thaw cycles drive water deeper into substrates, accelerating deterioration.

Deteriorated or missing mortar joints in brick and stone masonry are another frequent issue. Even minor mortar loss can allow water to infiltrate, potentially damaging the structural integrity of masonry facades, historic elevations, or parapet walls. Similarly, cracks in concrete decks, balconies, or parking garages often go unnoticed until significant corrosion or spalling develops.

Poorly sloped drainage systems, including roof gutters, downspouts, scuppers, and plaza deck drains, are often missed during routine upkeep. Blocked drainage can cause localized flooding, ice dams, and saturation at the building perimeter. Over time, this persistent moisture exposure contributes to facade staining, efflorescence, and accelerated material breakdown.

Façade coatings and waterproofing membranes may also be neglected. Protective coatings lose effectiveness due to UV exposure, abrasion, and age—especially in regions experiencing harsh winters, high winds, or seasonal salt application. Without routine inspection and scheduled recoating, water management systems become less reliable.

Other overlooked areas include:

• Expansion joints and flashings that have reached the end of their service life
• Small cracks in exterior concrete, which may signal underlying structural movement
• Unsealed penetrations from mechanical installations or previous repairs
• Buildup of biological growth or efflorescence indicating prolonged moisture issues

Preventative maintenance should always be informed by periodic, professional inspections and a long-term management plan. Risks are higher in New England due to repeated freeze-thaw cycles, road salt exposure, and aging building stock. Early identification and remediation of minor issues can prevent expensive, disruptive repairs and protect both the structure and occupants. Routine attention to these areas contributes to the longevity, safety, and value of commercial assets.