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Summer Mold Hotspots: What to Look For

As summer rolls in, so does the potential for mold growth in our homes and workplaces. Mold thrives in warm, humid conditions, making the hot, sticky months of summer a prime time for it to flourish. Whether you’re heading to your summer home or just trying to keep your primary residence mold-free, it’s essential to know the common hotspots for mold and the signs to watch out for.

Top Summer Mold Hotspots

Kitchens and Bathrooms

These areas are constantly exposed to moisture from cooking, washing dishes, and taking showers. Common mold-prone spots include behind sinks, under dishwashers, around toilets, and in shower stalls. Don’t forget to check less obvious places like behind the refrigerator and under the microwave where condensation can build up.

Basements and Crawl Spaces

Basements and crawl spaces are notorious for dampness. Moisture seepage, flooding, or poor ventilation can create ideal conditions for mold growth. Look for signs of mold on walls, floors, and insulation materials.

Attics and Roofs

Poor ventilation and roof leaks can lead to mold growth in attics. Inspect the insulation and wood beams for any signs of mold, especially if there have been roof leaks or ventilation issues.

Air Conditioners

While air conditioners help keep your home cool, they can also harbor mold if not properly maintained. Check the condensate drain and evaporator coils regularly to ensure they are clean and free of mold.

Laundry Rooms

Laundry rooms often have high humidity levels due to washing machines and dryers. Mold can grow inside washing machines, particularly front loaders, if they are not regularly cleaned and dried. Also, inspect the area around the machines and under any laundry sinks.

Flooring and Carpeting

Moisture can get trapped under carpeting and wood floors, especially in basements. Check for any musty odors or discoloration in these areas, as they can indicate hidden mold.

Signs of Mold

  • Visible Mold

The most obvious sign is seeing mold itself. Mold can appear in various colors, including black, green, white, yellow – even pink. It often grows in clusters and can have a fuzzy texture.

  • Musty Odors

A persistent musty smell is a strong indicator of mold, even if you can’t see it. This smell is caused by microbial volatile organic compounds (MVOCs) released by mold.

  • Health Symptoms

Unexplained health issues like itchy eyes, coughing, sneezing, or respiratory problems that improve when you leave the house can indicate mold. Mold exposure can exacerbate allergies and asthma.

Keeping an eye on these hot spots and recognizing the signs of mold early can help you maintain a healthy, mold-free home this summer. If you suspect a mold problem, it’s best to have a professional inspection to identify and address the issue promptly.

For more information on mold testing and remediation, visit RTK Environmental Group.


Water should be tested once each year for total coliform bacteria. (CDC)

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