Common Causes of Attic Mold

March 1, 2022 5:09 pm Published by Leave your thoughts

The attic is a vital component to the integrity of your home. It’s essential to keep track of any damage within it, including mold. There are plenty of reasons why mold gathers and grows in this area. Whatever the reason, it’s vital to check on the condition of your attic. Mold removal is costly and can lead to severe structural damage. So, what causes attic mold?

Roof Leaks

Mold loves water. If your roof contains an open-source for water leaks, then mold can grow. The causes of roof leaks range from roof age, damage, or improper installation. Water will find a way into your attic, rest within the wood, or gather in a puddle. Check your attic for leaks after a rainy day and see if there are any signs of water damage.

Improper Ventilation

Although your roof may not contain any leaks, there is still a way for moisture to appear within your attic. During the winter months, condensation collects inside your attic due to the cold. A proper ventilation system expels the water from the air to keep your attic dry. An improper ventilation system allows moisture to gather and encourages mold growth.

Not Enough Insulation

Insulation has many benefits to a home. Mainly, it keeps your home warm in the winter and cool in the summer. It’s also a helpful tool in mold prevention. Most air within the home moves upward toward the attic. When warm air meets the cold roof, condensation begins to form. Sometimes insulation is not installed correctly, or the attic may not have enough. Invest in quality insulation and cover the entirety of your attic to prevent mold growth.

No Kitchen or Bath Exhaust Fans

Common exhaust fan designs go through the attic to the outside. However, if the exhaust fan is not installed correctly or damaged, the air may expel directly inside the attic. The moisture from the bathroom and kitchen carries into the attic and stays within the air. Check your exhaust fans every once in a while to make sure the air is adequately expelling outside and not inside your attic.

Ceiling Gaps

Although your roof and attic may be secure from leaks, your ceiling may require maintenance. Cracks in ceilings are typically due to structural damage or simply with the age of the home. Although some cracks have no cause for alarm, others should be patched up immediately — especially the ones that lead directly to the attic. Moisture finds its way through the cracks and roams to the attic.


The best way to prevent mold growth is to stop moisture from entering the attic. Keep up with your attic and check on its integrity every few months. Do not let the growth of mold put you under financial stress. Remember, you can prevent mold growth, and if worse comes to worst, you can also get rid of it. Be sure to check on your attic for mold growth routinely.

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