Mold vs. Mildew: Mold is a fairly common problem in foodservice operations, and it’s something that owners, managers, and health inspectors pay close attention to. What’s the Difference?
By Grainger Editorial Staff
Mold and mildew are fungi that develop due to excessive, unchecked moisture. Both mold and mildew start as tiny spores that often require a similar environment to flourish, making them easy to confuse. However, mold and mildew shouldn’t be treated the same. It’s important to understand the differences in appearance and health effects to prevent more significant issues from taking root in your property. Identifying Mold vs. Mildew Though the term is often used interchangeably with mold, mildew refers to specific types of fungus, including some types of mold. Both are considered fungi that require water, oxygen, and food to live and survive. They grow in multiple temperatures and environments, with some strains thriving at higher temperatures. According to the EPA, mold can spread on any organic matter, including clothing, leather, and paper, as well as ceilings, walls, and floors. Mildew often appears on shower walls and windowsills, but can also grow on plants, paper, or cloth.
Mold and mildew differ in appearance and possible health risks. Mildew has a gray, white or light brown color and generally rests flat on the surface of a moist area. It has a powdery appearance that may have a distinct, foul odor. Mold has a fuzzy, raised appearance and in unaired areas has a strong, musty smell. It often appears in darker shades of black, green and red. Mold and mildew can appear on damp surfaces as soon as 24 to 48 hours. Mildew typically appears first as small dots and grows in an outward pattern, but it remains on the surface. Mold, however, can quickly grow inward and upwards, eating into walls, ceilings and other surfaces causing substantial property damage.
Health Effects
Although mildew can cause minor respiratory problems like coughing fits, it is not as invasive or troublesome as mold. Mold can produce allergens that can trigger allergic reactions, asthma attacks or produce potent toxins and/or irritants. Hypersensitivity pneumonitis (lung inflammation) has also been linked to mold exposure. People with the greatest risk of health effects from mold exposures are the elderly, the very young and expectant mothers, as well as individuals with mold allergies, asthma and other chronic respiratory ailments.
HOSPITALITY NEWS SEPT | Page 37
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