Attic Mold

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Attic Mold

A roof leak happens, what to do next? The answer to that is simple, call a licensed roofer out as soon as possible to fix the issue. Although this is the proper approach to take, what most homeowners do not know is that most leaks go unidentified for prolonged periods of time. Catching the leak as soon as possible is crucial, mold can begin to grow in as little as 24 hours. Mold only needs time and a sufficient moisture source to begin growth. We are going to outline how to identify mold in your attic and how to remedy the issue.

Some of the most common causes of mold growth in your attic are:

  • Roof Leaks
  • Improper roof ventilation
  • Improper venting into the attic



Roof leaks from rain can lead to mold growth if gone undetected. Below are some ways to check for a roof leak.

  • Check for moisture staining on insulation and wood components of the attic.
  • Observe the skylights, chimneys, attic windows, and any portion of the attic/roof where dissimilar materials join each other (including flashing). These places are hotbeds for potential moisture intrusion.
  • Check for condensation build-up on vapor barriers (if present) this can indicate a possible moisture issue within the attic.
  • Checking roof coverings for damages or deficiencies that would allow moisture intrusion.


Improper ventilation in the attic can lead to mold growth. The biggest we see here is insulation covering up attic vents. Do not cover up attic vents with insulation! Air from the home travels up to the attic anywhere from cooking and showering produces moisture and if the attic vents are blocked by insulation this will result in moisture being trapped inside the attic and will cause mold growth.



Kitchen exhausts from cooking and bathroom exhaust fans are designed to terminate outside of the home normally through the roof. You want to ensure that these systems are not venting into the attic. This condition can result in moisture damage to the roof structure itself and promote mold growth.

If you suspect mold may be hiding in your attic we recommend contacting us at 949-230-6800, we can have an ACAC certified mold inspector to your home the same day to perform a comprehensive mold inspection and assess the damage to develop a proper remediation protocol (scope of work).

After the mold inspection is complete and mold has been confirmed by your inspector we highly recommend that you retain an ACAC board certified mold remediation professional to perform mold abatement at the impacted areas. We will work closely with the remediation company to ensure that all mold efforts have been executed properly and your attic is mold-free.

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Joseph Gutierrez

Mr. Gutierrez is a highly certified Environmental Hygienist and Property Inspector. He is well known and respected for his knowledge of the industry, work ethics, and superb customer service.