10 Tips for a Mold-Free House -
especially if you live in the south, this is good advise.
By Tom Kraeutler, AOL Home Improvement Editor
Tom Kraeutler is AOL's Home Improvement Editor and host of The Money Pit, a nationally-syndicated home
improvement radio show.
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 think about exactly what you might be trapping inside to keep you company all
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.
remedies to over come the lung investation you have by breathing in these mold spores. I have heard of those when
they have a systemic mold (usually black form) they will do the detoxification products and then this stuff comes
out their pours as the cleansing products work at killing it. Y
“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 to avoiding mold 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.
Here’s what you need to know to keep your home mold-free:
MIND THE MOISTURE – Keep humidity below 50% in basements. 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 oisture.
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 prevent mold growth. Unlike
regular drywall that has a paper face, Dens Armor Plus has a fiberglass face that cannot feed a mold problem.
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 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 for basement spaces.
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 MERV rating of at least 6-8, or 11 if the family is prone to allergies. 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 needs just yearly 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 use.
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 website for the Centers for Disease Control
and Prevention or review the Mold Resource Guide on the web site for our national radio show, The Money Pit.
Note: Tom Kraeutler is the Home Improvement Editor for AOL and host of The Money Pit, a nationally syndicated home
improvement radio program. To find a local radio station, download the show’s podcast or sign-up for Tom’s free weekly
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