How does a Roof Leak lead to Mold Infestation in a Building?

by / Monday, 10 September 2018 / Published in Tips

One of the common allergens, mold is the primary cause of most respiratory allergies. Some of the symptoms include sneezing, runny nose, congestion and itchy eyes. However, unknown to most people, the culprit might be the leak in the roof. According to experts, mold and mildew thrive in moist ambience and breed extremely quickly. Thus, a roof leak that penetrates within the attic or walls can be a source of irritants and allergens, including mycotoxins. Although mold is present in the outdoor air, it is usually not a reason for alarm, but when the mold infests inside the house, breathing or touching the spores can lead to a respiratory reaction.

Growth of mold

Mold and mildew need warm air and moisture to grow and that is why most of the mold infestations at home or at the workplace grow due to water leakages. Roof leaks forms a basis of most infestations as these leakages go undetected for longer period of time. Additionally, plumbing issues and clogged rain gutters are other causes of the leakages. Usually, when gutters get clogged the water starts to backup and that seeps into the fascia boards, walls and the roof deck. This, if ignored can create a safe haven for mold to thrive and infest the attic, air intakes and support rafters. If you add the intrusion of water and moisture to the dark attic and improper ventilation, it is the perfect place for the mold to grow over time.
Usually, mold is associated as slimy black or dark green film that spreads over the moisture laden surfaces. However, this is the tip of the iceberg. Mold goes deep into the wood as the spores penetrate into the surface. This weakens the wooden structure and causes unnecessary expenses as the lumber damage can be extensive.

Prevent damage due to mold

Prevention is always better than cure and that is why preventive maintenance can help you secure your home or commercial establishments from mold infestations. Here are some tips to help you get started:
• Clean the gutters and downspouts by roofing professionals in Napa so that it is cleaned sealed and checked professionally every year.
• Check for leaks on the roof periodically, especially after storms of heavy rains by a licensed roofing expert.
• Use diluted bleach on any lumber that is suspected to harbor mold.
• Ensure that the ventilation in the attic is proper and is checked often.
• Don’t ignore the rooftop and check for signs of any crack or leak and mold growth
• Change the air filter of the air conditioner
• Replace any wood that has been infested with mold

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