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What is attic mold and what does it do to a home?

May 02, 2019

Attic mold is stuff that can look like a discoloration or stained area or a light powdery growth on the roof sheathing in your attic especially in damp places. There are different types of molds such as the pink mold e.g. aureobasidium, yellow mold such as serpula lacrymans and blue-green mold such as penicillium. However, the most common types of mold are:

  1. Black mold, which is caused by excessive moisture that can emanate from kitchen or bathroom exhaust fans and dryers which pump moisture out of the house. When this moisture is vented into the attic, molds start forming on your roof.
  2. White mold- this type of mold is mostly caused by excessive build-up of salt deposits that come from water seepage.

Even though attic mold seems perfectly normal, it can be a hazard to your home if left unattended.

 Here is what attic mold does to your home if you choose to ignore it;

  1. It can lead to deterioration of attic sheathing and roofing system

    Attic mold means there is an underlying moisture issue that needs to be resolved. Moisture means the room is not properly ventilated and improper ventilation could make your roof fall apart. The longer you wait to fix the issue, the more expensive it will cost.

  2. Causes structural and material damage

    Mold can cause immense damage to organic materials such as paper, wood or even glue as it eats away at these materials, causing them to fall apart or rot. Left unattended, it can cause great damage that could lead to the collapse of ceilings and falling of walls. It can spread in your home and feed on carpet, wooden studs and floorboards, quickly leading to their destruction.

  3. Causes health problems

Some types of mold pose a health risk to people living in your home;

  • Allergenic molds can irritate the respiratory system if inhaled in large amounts. They can exacerbate asthmatic symptoms such as wheezing and breathing difficulties. Coughing, fatigue and diarrhea are other effects of this type of mold.


  • Pathogenic molds, which are mainly a threat to people with low immune systems.



  • Mycotoxic molds are the most dangerous ones and can affect everybody. These molds attack the immune system and in severe cases lead to death. The seriousness of this type of mold can cause mental confusion, brain damage, miscarriages in pregnant women and depression among others.

If you notice any signs of attic mold such as visible or mold spores, lingering flu, a damp or musty smell, a collection of water or moisture in a specific place, ensure that you fix the problem right away. It is easy to get rid of allergenic molds since they are less toxic. Pathogenic and myotoxic molds are critical and you should contact professionals immediately you take note of them.

For any queries or problems regarding mold in your home, or any other issue relating to your roof, feel free to contact our team of experts.







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