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Black Mold growing in Fiberglass Batts
Newspapers and television programs are increasingly
reporting on mold problems with newer homes and
buildings.
In one such instance,
the Ballard family of Texas had their home demolished in April due to mold
infestation that could not be removed. Their son suffered permanently scarred
asthmatic lungs, while the father lost his memory and his job. The mold got so
bad they needed HEPA filters to enter the house.
Erin Brockovich and her
family are also battling mold related illnesses, like respiratory ailments and
chronic headaches, to name a few. Tests on the home revealed serious
construction flaws and high levels of several molds. Blood test results
indicated a severe reaction to two of the molds that showed up in the home. For
more information, visit http://www.epa.gov.
There are specific environmental conditions required for mold to
propagate. A specific temperature range and source of food are the basic factors
that must be in place, but the most important element is the presence of
moisture. Moisture can be present within building
walls, ceilings,
attics, and crawlspaces via:
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gravity
capillary action
air leakage
diffusion
In order to minimize the potential for mold
growth, a building envelope system has to meet all of the following criteria:
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The components of the building should
resist moisture and once wet should then have the potential to dry quickly
(they should be hydrophobic). As supported by test results from leading
building product laboratories, All Tech Industries' Foam does not wick or
absorb water. Moisture passes through, and once dry, the product returns to
its full performance value.
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All components should be installed with
relative ease and should not be installation-dependent for their ultimate
performance. Installed by a Licensed Dealer, All Tech Industries' Foam
Insulation is a quick and effective, one-step insulation and
air barrier
system. No costly additional labor is required for caulking, taping, window
gap foaming, etc.
Prevention
from Dangerous Mold in Your Home
Recent reports of mold remediation
projects shutting down schools or office buildings
have raised awareness regarding the potential
hazards of interior mold contamination. While
scientists still have much to learn regarding the
danger molds may present, some basic knowledge about
interior mold prevention and remediation has been
established. There are also an increasing number of
resources available for additional information on
the topic.
Molds are one category of non-green
plant-like organisms (along with mildew, mushrooms,
rusts, smuts and yeast) that fall within the fungus
family. All fungal matter shares the common
characteristic of being capable of growth without
sunlight. Because of this, molds can be found almost
anywhere and can grow on almost anything as long as
moisture and oxygen are present.
Many types of molds exist. According
to the Environmental Protection Agencys (EPAs)
Mold Remediation in Schools and Commercial
Buildings resource, All molds have the potential to
cause health effects. Molds can produce allergens
that can trigger allergic reactions or even asthma
attacks in people allergic to mold. Others are known
to produce potent toxins and/or irritants.
Currently, there are no Threshold
Limit Values (TLVs) assigned for airborne
concentrations of mold or mold spores. There also
are no EPA or Occupational Safety Health and
Administration (OSHA) regulations or standards for
airborne mold contaminants. OSHA does reference a
sampling protocol for fungi (PathCon Technical
Bulletin 2.4, A Suggested Air Sampling Strategy for
Microorgamisms in Office Settings) under the Indoor
Air Quality heading on its Web site. The protocol
states, Fungal amplification (excessive levels of
mold) should be considered when the indoor
concentration is above 200 colony forming units per
cubic meter of air and substantially exceeds that
detected in the outdoor air.
Mold Prevention
There is not a feasible way to
eliminate all mold and mold spores indoors, so the
most effective way to control indoor mold growth is
to control moisture. Mold growth frequently occurs
when excessive moisture or water accumulates
indoors. In buildings where mold is a problem, the
mold must be remediated and the sources of moisture
eliminated. This is where Spray Polyurethane Foam be
used very effectively. Used as a
primary source of
insulation, it seals the cracks, gaps and holes in
the buildings structure and sheathing to create a
tight space by reducing
air and moisture flow
from
infiltration and
exfiltration.
It is important to dry water-damaged
areas and items within 24 to 48 hours to prevent mold
growth from starting. Water-damaged porous or
absorbent materials, such as ceiling tiles, wallboard
or cellulose and fiberglass insulation should be
discarded and replaced. Discard nonvaluable books
and papers and be sure to photocopy important
paperwork before discarding the originals. Use a
water extraction vacuum to remove water from
carpeting. Then use dehumidifiers and fans to
accelerate the drying process. Carpet that becomes
moldy usually must be replaced. Nonporous surfaces
can be vacuumed or wiped with mild detergent and
allowed to dry completely.
Moisture Control
Identify and repair leaky plumbing
and other sources of water in a timely fashion to
prevent moisture and mold growth. You can minimize
mold growth by reducing indoor humidity to between
30 and 50 percent. This can be done by venting
bathrooms, dryers and other moisture-generating
sources to the outside; using air conditioners and
dehumidifiers; increasing ventilation; and using
exhaust fans whenever cooking, dishwashing and
cleaning.
Also, reduce the potential for
condensation on cold surfaces like windows, piping,
exterior walls, roofing and floors by adding
insulation. Do not install carpeting in areas where
there is a continuous moisture problem, such as near
drinking fountains, sinks or on concrete floors with
leaks or frequent condensation.
Contamination Identification
A visual inspection is the most
important initial step in identifying a possible
contamination problem. The extent of any water
damage and mold growth should be visually assessed.
This assessment is important in determining remedial
strategies.
Ventilation systems should also be
visually checked, particularly for damp filters, but
also for damp conditions elsewhere in the system and
overall cleanliness. Ceiling tiles, gypsum
wallboard, cardboard, paper and other porous
surfaces should be given careful attention during a
visual inspection.
The use of special equipment to view
spaces in ductwork or behind walls or a moisture
meter to detect moisture in building materials may
be helpful in identifying hidden sources of mold
growth and the extent of water damage.
Mold Remediation
The EPAs remediation guide for
schools and commercial buildings offers detailed
recommendations for a variety of mold removal
scenarios and is a tremendous resource for anyone
facing a mold problem.
Mold should be cleaned as soon as it
appears. Small areas of mold can be cleaned using a
detergent/soapy solution or an appropriate household
cleaner and allowed to dry completely. A HEPA vacuum
can be used to clean items such as furniture,
concrete, carpeting or books after the material has
been thoroughly dried.
For small areas of mold growth, an
N95 respirator, goggles and gloves should be worn
during cleaning. For larger mold remediation jobs,
or in situations where high levels of airborne dust
or mold spores are likely or long-term exposures are
expected, the EPA suggests a full-face, powered air
purifying respirator (PAPR) equipped with HEPA
filters along with disposable coveralls, gloves and
shoe covers. The cleaned area should be thoroughly
dried. Dispose of any sponges or rags that were used
to clean the mold, along with the used personal
protective equipment.
If the mold returns quickly or
spreads, it may indicate an underlying problem, such
as a leak or excessive humidity. Any underlying
water problems must be fixed to successfully
eliminate mold problems. If mold contamination is
extensive, an experienced remediation professional
may need to be consulted.
The
key to winning the war against mold is to take pre-emptive measures for the
future health of your family. For more information on how to evaluate your home
for susceptibility to mold infestation, call or
contact us
.
Contact an All Tech Industries
engineer today (989-826-9999) for a deeper discussion
about your insulation requirements.
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