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Dealing with Mold
The Facts
In the
last several years mold has caught our attention in the
newspapers, on television and in magazines. It's been
around for thousands of years - so what's the deal? Molds
and mildew are found everywhere in our environment. It can
grow virtually there is adequate moisture and a food
source, such as wood, paper, dirt, drywall, wallpaper,
carpet and fabrics. Depending on the type of mold or mildew
it can be almost any color from black to white, pink to
green. Common household molds include Cladosporium,
Penicillium, Aspergillus, Alternaria and Mucor. No one
knows how many species of mold exist, but there are always
dozens of kinds of mold and mildew spores present at all
times in the indoor and outdoor environment.
Mold and mildew can be very destructive to the materials on
which they grow. They may cause staining, rotting of
materials, and musty odors. When colonies of mold are
extensive, they can produce enough spores and by-products (mycotoxins)
to be harmful to health, causing irritation to the skin,
eyes and respiratory tracts. |
Where
does mold grow?
Mold will grow in places where leaks or flooding have
occurred: leaking pipes, toilets, dishwashers, water
heaters, other appliances, or leaking roofs. Many building
materials provide suitable nutrients that encourage mold
growth. Materials such as dust, paints, wallpaper,
insulation materials, drywall, carpet and upholstery,
commonly support mold growth. Molds cannot grow on dry
materials even if all other conditions are ideal for mold
growth. Conversely, mold and mildew cannot be controlled
where moist materials exist.
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Mold can hide in many places in you home.
Take a look at the red Danger Zones in the image below. |
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How can
I detect and prevent mold and mildew?
The easiest way to prevent the mold from gaining a foothold
is to control dampness. |
Detection - watch for
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Moisture
condensation on windows or around doors |
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Cracking of
plasterboard |
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Peeling or
cracking paint |
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Drywall tape
loosening |
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Wood warping |
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Musty odor |
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Increase in water
bills without justification |
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Prevention
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Keep humidity
levels below 40% and ventilating showers, cooking
areas and clothes dryer vents can slow mold growth.
Other ways to slow mold growth are: |
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Use an air
conditioner or a dehumidifier during humid months. |
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Add mold
inhibitors to paints before application. |
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Clean bathrooms
with mold killing products. |
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Do not carpet
bathrooms, laundry rooms or other areas, which
frequently get wet. |
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Remove or replace
previously soaked carpets, pads and upholstery. |
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How can I tell if there is mold in my
home or building?
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Look for visible
mold growth. |
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Look for signs of
excess moisture or water damage (water leaks,
standing water, water stains, and/or condensation
problems). |
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Search behind and
underneath materials (wallpaper, carpet and pad, sink
cabinets), furniture, pictures or stored items. |
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Check around
heating and cooling appliances (air conditioners,
evaporative coolers, furnaces) for standing water.
Keep these clean and serviced regularly. |
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Search areas with
noticeable mold odors. If you can't see it but you
can smell it, you can assume you have a mold problem. |
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How can I rid my home (office,
workplace, building) of mold and mildew?
Determine where the excessive
moisture is coming from, and correct the problem. After
fixing the moisture problem the cleanup can begin. In many
cases mold can be removed by a thorough cleaning with a
household bleach solution (one-cup bleach to 9 cups water).
But be careful - exposure to mold can occur during the
cleaning stage. Mold counts are typically 10 to 100 times
higher than background levels during the cleaning of mold
damaged materials. If you have an extensive amount of mold
and you don't think you can manage the cleanup on your own,
you should contact a professional who has experience in
cleaning mold in buildings and homes. |
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How can I determine if a remediation
contractor is qualified?
Since there is the potential for high levels of mold to
be released during removal, it is important to hire a
qualified contractor. Asking questions such as the
following can help save you time and money:
 | What is the contractors prior
experience? |
 | Will they provide references from
their 25 most recent projects? |
 | How many projects have they
completed which would be similar to what you need done? |
 | Do they have certified microbial
remediation supervisors? |
 | Do they have Microbial Liability
Insurance Coverage? |
 | Do they offer independent
third-party testing? |
 | Are they licensed and bonded? |
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ERI has successfully completed
over 400 microbial remediation/mold cleanup projects
including schools, government agencies, medical facilities,
commercial and industrial sites, and private residences, in
just the last four years, with contracts totaling over
$12,000,000. Contact ERI for more information. |
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