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  • Writer's pictureM K

What Causes Commercial Roof Leaks

Roof leaks can be caused by various factors, and identifying the source of a leak is essential for timely repairs to prevent water damage and maintain the integrity of your building. Here are some common things that can cause a roof leak:

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  1. Damaged Roofing Material:

    • Cracked, curled, or damaged material can expose the underlying roof layers to water infiltration.

    • Aging or deteriorating roofing material can become less effective at repelling water.


  1. Flashing Issues:

    • Damaged or improperly installed flashing around chimneys, vents, skylights, and roof valleys can allow water to seep in.


  1. Roof Penetrations:

    • Improperly sealed or damaged roof penetrations, such as vents, pipes, or HVAC units, can create entry points for water.


  1. Clogged Gutters Downspouts, and Drains:

    • Debris buildup in gutters, downspouts and drains can lead to water backup and overflow, causing leaks and potential water damage.


  1. Improper Installation:

    • Poor workmanship during roof installation, including incorrect sealing or flashing, can result in vulnerable areas prone to leaks.


  1. Condensation and Poor Ventilation:

    • Inadequate attic ventilation can lead to condensation buildup, which can cause moisture-related issues and potentially lead to leaks.


  1. Ice Dams:

    • In cold climates, ice dams can form at the roof's edge, preventing proper drainage and causing water to back up.


  1. Ponding Water:

    • Flat or low-slope roofs with improper drainage can lead to ponding water, which can deteriorate roofing materials and cause leaks.


  1. Tree Damage:

    • Overhanging tree branches or fallen debris can damage roofing material and create openings for water infiltration.


  1. Animal Damage:

    • Animals such as rodents or birds can create holes in roofing material, causing leaks.


  1. Storm Damage:

    • Severe weather events, such as hail, strong winds, or heavy rain, can damage roofing materials and lead to leaks.


  1. Roof Wear and Tear:

    • Over time, roofs naturally wear out, and the protective layers degrade, making them more susceptible to leaks.


  1. Sealant Deterioration:

    • Sealants around roof penetrations, flashing, and other areas can degrade over time, leading to gaps that allow water to enter.


  1. Saturation and Water Seepage:

    • Excessive rain or melting snow can saturate roofing material, causing water to seep through.


  1. Skylight Leaks:

    • Improperly sealed or damaged skylights can allow water to infiltrate.


Prompt identification and repair of roof leaks are crucial to prevent further damage. Regular roof maintenance, inspections, and addressing any issues promptly can help extend the lifespan of your roof and protect your property. If you're unsure about the source of a leak, it's advisable to consult a professional roofing contractor for a thorough assessment and proper repairs.

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