3 Hidden Places Mold Spores Can Thrive In Your Home

A typical individual mold spore is as small as 3 microns. By comparison, a human hair is over 100 microns wide. Mold is ubiquitous in nature and dormant mold spores pervade the environment, both outdoors and indoors. Once specific conditions of moisture, temperature and food supply are met, dormant spores can quickly become active and start to multiply. Live reproductive spores are released into indoor air, spreading contamination. Inhaling these living spores is a known cause of allergic reactions and even chronic illness in certain individuals.  

Here are three hidden locations where conditions are favorable for mold growth inside your house:

Down in the Basement

Damp basements are common due to lack of ventilation. Persistent dampness provides moisture for growing mold. Also, since household plumbing is often routed through the basement, small leaks and condensation on pipes contribute to the dampness. Mold dislikes natural sunlight and grows best in cool temperatures, so a darkened basement is a preferred location. The pungent musty odor often associated with basements is usually a giveaway that mold is growing there.

Up in the Attic

Mold spores lying dormant in a dark attic are waiting to be activated by contact with water. In enclosed attics, humidity often accumulates to high levels, providing sufficient water vapor to activate dormant spores. These spores grow well in porous material such as beds of insulation.  Minor roof leaks which may not be evident in living spaces below are another water source in the attic. Insulation material itself doesn’t provide mold food. However, the dust that accumulates within insulation fibers often contains nourishment and the paper backing attached to roll-out insulation batts provides cellulose, as well.

Inside the HVAC System

The condensate drip pan beneath the indoor air handler diverts condensation from the A/C evaporator coil into a household drain. If the pan drains sluggishly due to a clog, however, the continuous presence of warm stagnant water in the pan provides a perfect environment for mold. Spores pulled through the system airflow infect the water. Active mold growth may thrive in the drip pan and/or the system evaporator coil above.

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