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Prevent Mold in Your Home with A Whole-Home Humidifier

4 minute read

October is the time of the year when most of us start thinking about sealing the hatches in our homes for the season. But before you do that, it’s healthy to check if your home is mold-free. You might be trapping it inside to keep you company all winter long. Use our guide below to prevent mold from growing in your home.

Prevent Mold in Your Home Guide

According to the Centers for Disease Control and Prevention, mold growth can exist practically anywhere. Whether you are inside or outside, mold spores are there. They can enter your home through openings as large as doors or windows, or as small as the tiniest gap you ever chased with a caulk gun. Once in your home, the spores can grow on clothes, shoes, toys, or even pets. Worse yet, mold is almost certain to release clouds of potentially harmful spores that, once airborne, can take the shortest path to your lungs.

Some molds are harmful, others are benign. And, how mold affects you can depend on your own personal sensitivity. Mold expert Jeff May learned this first hand. The Johns Hopkins University Press author of three books (‘My House is Killing Me,’ ‘My Office is Killing Me’ and the ‘Mold Survival Guide’), wasn’t always such an accomplished expert on how mold can make you really sick.

“For years, I had an office air conditioner that was probably too big for the space. As a result, my office was always damp and I’d cough whenever the AC came on. Then one day I opened it up and found that everything inside had turned black — with Cladosporium mold. That was the defining moment when I put two and two together,” he said.

According to May, the first step in preventing mold in your home is to understand what makes it tick. Mold needs three things to grow: moisture, air and food, and this combination can be found just about anywhere in your home. “Mold grows where it can find food: the dust on a bathroom ceiling, the starch paste on the back of wallpaper, or the plant fibers that make up the jute pad under a carpet. Add moisture, and mold growth begins,” said May.

Mind the Moisture

Keep relative humidity between 40-60 percent. Improve outside grading and drainage by keeping gutters clean and soil always sloping away from your home. Cover dirt crawlspace floors with plastic to reduce moisture.

Store Safely

Keep all storage at least several inches up off concrete floors and away from foundations where dampness can easily seep in. This is especially important with organic material like cardboard boxes. Avoid using wooden shelves; metal or plastic shelves are preferable.

Heat Finished Basements

Below-grade spaces like finished basements are more likely to become infested and should always be heated to at least 60 degrees, even when not being used. The warmer the space, the less the chance that condensation will form and feed a mold problem.

Build Mold Resistant

When choosing building materials, use materials that don’t feed the mold. Tom Combs took this option when remodeling the bathroom in his family’s 1990 lake house outside of Atlanta, Georgia. “The ceiling was covered with mold and I wanted to take immediate action before the situation worsened.” Combs’ solution was Dens Armor Plus, a wallboard made by Georgia Pacific that is specifically designed to create a mold-free space. Unlike regular drywall that has a paper face, Dens Armor Plus has a fiberglass face that cannot feed a mold problem. For roofing specifically, make sure to consider algae, mold, and bacteria-resistant shingles when installing a new roof. Metal infused in these shingles will prevent mold in your home by killing off the bacteria that causes algae and mold growth naturally without the need for chemicals.

Ventilate Vigorously

Poor or missing ventilation fans in damp spaces like baths and kitchens can leave enough moisture behind to sustain a mold problem. Make sure all baths and kitchens are vented by properly sized fans that take moisture outside and NOT into attics. Keep the bathroom door open after bathing to speed up the drying of surfaces.

Avoid Basement Carpets

More than almost any other material in a house, carpets can be incredibly effective havens for mold. Even non-organic carpets can collect dirt, dust, and moisture that combine to provide mold a fertile ground in which to grow, especially in below-grade spaces where relative humidity tends to be higher. Hard surface products like laminate flooring or engineered hardwoods are always a better choice to prevent mold in your home.

Filter the Air

If your home has a forced-air heating and cooling system, using a top-quality air filter is a must. May recommends pleated filters with a Another option is a whole-house electronic air cleaner. Mounted permanently to the home’s HVAC system, a whole-house air cleaner uses ionization technology to charge particles making them stick to filters like a magnet. According to Consumer Reports, the most effective unit is the AprilAire Model 5000, which can trap virus-sized particles as small as one micron (one millionth of a meter) and just needs annual filter replacement.

Insulate Ducts

Duct systems that carry heated or cooled air throughout your house must be insulated whenever they pass through unheated or uncooled spaces like attics or basements. If not, condensation can form inside the ducts and, when combined with dust in the air, can allow mold to grow in the ducts, and then spores can easily circulate throughout your entire house.

Clean Carefully

Use mold-inhibiting cleaners in bathrooms and kitchens. Portable air conditioning units should be taken apart and cleaned at the start of every season. When painting damp spaces like kitchens and bathrooms, use paint with a mold inhibitor EPA-approved for indoor us to prevent mold in your home.

Fix Floods Fast

If you do have a major leak or flood, quick action can stop mold before it starts. Thoroughly dry soaked carpets and padding, and remove any wet upholstery. Then wash and disinfect all surfaces before the carpet and pad are replaced.

Mold may be a part of Mother Nature’s plans, but following these tips will make sure recovering from the sickness it can cause doesn’t ever have to become part of your plans. For more information, visit the Web site for the Centers for Disease Control and Prevention or review the Mold Resource Guide on the Web site for the national radio show, ‘The Money Pit.’

Find a Pro

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