What Causes Mold to Grow in Attics

The attic is one of the areas that are most susceptible to mold growth. Because most homeowners rarely access this area of the house, attic mold often grows unnoticed. Molds can spread quickly. As such, we highly recommend you conduct regular inspections to prevent mold from spreading to other parts of your home. 

There are several causes of mold growth. Learning about the common causes of attic molds will prevent mold from growing in the first place. By eliminating these potential causes, you’ll stand a better chance of keeping mold from growing in your attic.

Leaking roof

When homeowners find out about mold growth in the attic, many of them assume that it is caused by a leak in the roof. 

Wear and tear are inevitable, whether you have an old or new roof. Roofing issues make it less effective at keeping water out. Remember that moisture is the main ingredient for mold growth. Just a tiny leak causes enough moisture to build up and grow a large mold colony. A regular roof inspection is a must to keep it in top shape. Also, repair roof problems promptly to prevent mold growth. 

Exhaust vents going into the attic 

In most homes, a bathroom or kitchen vent can dump warm, moist air into the attic space. Exhausting hot, humid air directly into the attic will result in moisture formation. The moist environment, combined with a food source such as wood, creates an ideal environment for mold growth. 

Mold in the attic is often due to excess moisture in the area. Ensure that your exhaust fans and dryer vents pump moisture as far away from your home as possible and never in your attic. 

Poor ventilation 

Warm air from daily activities such as bathing or cooking often rises into the attic. When it does, it carries with it large amounts of moisture. Moisture gets trapped in the attic if there is poor ventilation. This can lead to attic mold. Ensuring you have good ventilation in the attic will help reduce moisture build-up; hence, preventing mold. 

Mold growth in the attic does not necessarily affect indoor air quality. But if left unaddressed, it can lead to structural damage, which will cost you thousands and thousands of dollars on repair.