The Connection Between
Toxic Mold and Disease
Toxic Mold &
Disease
by Margot B
Asthma
has increased 300 percent in children in the past ten
years. Research by WHO, in Germany, finds prostate
cancer, breast cancer, and
other cancers increasing due to
mold-related problems.
Mold is the number one health problem with one in every
three persons affected by mold and one in ten with a severe
problem related to mold. These can range from the common cold,
tonsillitis, otitis, sinusitis, bronchitis, asthma, and
pneumonia, to cancer.
Check your home's humidity levels; buy or borrow a hygrometer
and watch the changes in R.H. that occur throughout a typical
day in different rooms of the house and over the heating
season. To inspect your home for mold growth, winter is the
best time except for basements which should also be inspected
in the summer. With a flashlight and some simple tools, go
through the entire house, both inside and outside, searching
for moisture damage and mold growth and their potential
causes.
The Stachybotrus species of mold is dangerous; it will start
growing in 80 percent humidity but, once established, can grow
at 55 percent humidity. This mold can develop from the decay of
building materials and is much harder to control. If more than
ten square feet develop, it is advised that a professional
clean it up. When you see a small speck of mold, that's only
part of the problem - the remainder being inside the walls.
'Frog Page' is a manual of the health of the environment and
states that frogs are declining because of mold.
Some of the causes of mold are brush and trees within 30 feet
of the building; venting the clothes drier inside the home;
furniture against outside walls; old fill, causing building
movement leading to cracks causing water ingress; concrete will
wick up water even to several feet above ground; ventilation
not directed outside, such as the kitchen range hood, which
should be vented outside; plants and aquariums; drying clothing
indoors; standing water, such as keeping cold water in the
kitchen sink; hot tubs; using several gallons of water to wash
floors.
'Sick Building Syndrome' is caused by moisture and mold growth.
It migrates through foundations up from the soil. A
dehumidifier is not the final answer as it only does the air
and not the walls. What is required is a combination of
ventilation, circulation, and heat.
Carpenter ants and termites will smell moisture from miles away
and they only attack damaged wood.
Ventilation alone won't help a crawl space. In the summer the
vents bring in warm, moist air.
Mold forms on the coldest space. The only
way to deal with it is with heat. Wall heaters with fans are
more efficient than baseboard heaters.
Pull furniture and store material away from exterior walls and
off basement floors; leave closet doors ajar; leave bedroom
doors open as much as possible; undercut doors; don't block or
deflect warm air registers; open drapes, blinds, and curtains;
set the furnace fan to run continuously. This will use more
electricity but can be offset by installing a two-speed
energy-efficient motor; don't cut off the heating supply or
close off unused rooms.
Uninsulated or poorly insulated areas such as exterior corners
or foundation walls, should be improved with additional
insulation. Be sure to install an air-vapor barrier, usually
polyethylene, on the room side of the insulation to prevent
hidden condensation behind the insulation. Seal hidden opening
into the attic, tighten the attic hatch, weatherstrip and caulk
around windows and doors, gasket electrical outlets, caulk
baseboards and seal the top of foundations. Using an air
conditioner on muggy summer days also helps take out the
moisture.
|
|
|
|
|
|
Mold can be dangerous to your
health. Find out what you can do
about it by reading this
article. |
|
|
|
|
|
|
Humidifiers, dehumidifiers, air-conditioning units and
filtration systems can be a source of mold growth if they are
not regularly cleaned.
Key areas to check for moisture sources leading to condensation
inside the home are roof leaks [especially at chimneys,
flashings, skylights and eavestroughing]; wall leaks
[especially at window and door flashing and sills]; foundation
leaks [especially where the ground slopes toward the
foundation]; and plumbing leaks [especially at toilet bases and
under sink drains].
Check any fuel-burning equipment - furnaces, hot water heaters,
boilers, fireplaces, and wood stoves - to ensure that they are
venting properly. A blocked chimney could mean that combustion
products, including large amounts of water vapor, are spilling
into your house. Along with that moisture come dangerous
combustion gasses, such as carbon monoxide, which cause deaths
every year. Have heating equipment and venting systems checked
by a trained service person.
If your moisture remedial work includes extensive air sealing,
be sure that all fuel-burning equipment has an adequate supply
of combustion air. High efficiency furnaces, for example, have
their own air supplies and exhaust fans but conventional
equipment may rely on house air for combustion and on 'natural
draft' to move combustion products up the chimney flue. If
starved for air or overpowered by an exhaust fan somewhere else
in the house, such equipment can spill combustion gasses
indoors. Examples of this include stains near the vent of a gas
water heater, smoke entering the room from a wood-burning
fireplace or stove, and pilot lights being blown out.
Mold growth often occurs in out-of-the-way areas like closets,
corners, walls behind furniture and unused rooms. Increasing
air circulation to these areas warms the cold surfaces and
lowers local humidity levels.
To solve moisture problems, cover any exposed earth in a crawl
space or basement with heavy polyethylene, sealed and
weighted-down; slope soil away from foundations to keep
basement walls and slab dry; patch any foundation leaks; don't
use humidifiers, unless humidity levels are below 30 percent
R.H.; avoid drying firewood indoors; operate bathroom exhaust
fans during a bath or shower; use your range hood exhaust when
cooking; avoid steam-cleaning carpets in winter; clean mold
from wood and gyproc with a 10 percent to 30 percent solution
of hydrogen peroxide applied with a spray bottle. This is more
effective than bleach and water.
If you use chlorine bleach, mix one part bleach with two parts
water and a little detergent to clean nearby surfaces. Leave
for 15 minutes and rinse well. Use gloves and protective
glasses and good ventilation. Badly mildewed carpets,
furnishings and books will probably need to be thrown out.
Molds are parasitic micro-organisms that appear as black, white
or multi-colored stain or fuzz. In addition to causing asthma,
they can cause other allergies and serious health problems.
There are tens of thousand of varieties of molds and are
difficult and expensive to identify, even for experts. Health
officials recommend eliminating all molds from inside your
home.
Most mold spores need condensation or damp materials to
germinate and once are established, many colonies generate
their own moisture and can continue to survive even under dry
conditions. They also need mild temperatures and a source of
food, such as house dust or drywall paper.
Resources:
1. Natural Resources Canada [NRCan] "Air-Leakage Control" Pg.
11 [20 Feb 2002]
2.WHO [World Health Organization] [20 Feb. 2002]
3. Cormier, Dr. Y., Centre de Recherche, Hopital Laval, 2725
Chemin Ste-Foy, Ste Foy, Quebec Canada, G1V-4G5 Institut de
Recherche en Sante et Securite du Travail (IRSST), Quebec
Canada July 21, 1999; revised; accepted for publication
November 26, 1999.
4. http://www.cdc.gov/ncidod/dbmd/
[20 Feb. 2002]
5. http://ehpnet1.niehs.nih.gov/qa/105-10news/NIEHSnews.html
[20 Feb.2002]
6. http://water.usgs.gov/pubs/FS/fs-043-01/
[20 Feb. 2002]
About the Author
Margot B, Writer, Information Broker, Web Developer at
Margot B & Associates
mailto:margotb@wonderport.com
http://www.writers.Org-HQ.com
Are Moldy Schools Destroying Our Kids?
Black
Mold
Exposure to Mold Infestation Is a Proven and Serious Health
Threat to Residents and Workers
Got Attic Mold? Lets Talk Energy Conservation!
How Employers and Commercial Landlords Can Maintain a Mold-Safe
Workplace
How Is Mold Like Aids?
How
Not To Kill Mold
How to Collect Physical Mold Growth Samples for Low-Cost Mold
Laboratory Identification of Mold Species
How to Do Low-Cost Mold Sample Collection and Mold Laboratory
Identification of Mold Species
How to Use Do-It-Yourself Toxic Mold Test Kits
If You Think Mold and Mildew Hibernate During The Winter, Think
Again!
Is Mold a Menace in Your Home? Now There’s A Way to Find Out
For Sure
MCS, Toxic Mold, Sick Building Syndrome, and Chronic Fatigue
Syndrome
Mold
Testing
Ten Mold Facts for Homeowners, Landlords, Tenants, and
Employers
Ten Steps to Avoid Mold Problems and Lawsuits in the Rental of
Residential and Commercial Real Estate
Ten Tips To Avoid Mold Problems and Lawsuits in Selling and
Buying Real Estate
The Unadulterated Truth About Black Mold: What You Don’t Know
Is Destroying Your Home And Your Health
Toxic
Mold & Diet
|