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Asbestos In The Home
If you think asbestos may be in your home, don't panic! Usually the
best thing is to LEAVE asbestos material that is in good condition
ALONE.
Generally, material in good condition will not release asbestos fibers.
THERE IS NO DANGER unless fibers are released and inhaled into the
lungs.
Check material regularly if you suspect it may contain asbestos. Don't
touch it, but look for signs of wear or damage such as tears,
abrasions, or water damage. Damaged material may release asbestos
fibers. This is particularly true if you often disturb it by hitting,
rubbing, or handling it, or if it is exposed to extreme vibration or
air flow.
Sometimes, the best way to deal with slightly damaged material is to
limit access to the area and not touch or disturb it. Discard damaged
or worn asbestos gloves, stove-top pads, or ironing board covers. Check
with local health, environmental, or other appropriate officials to
find out proper handling and disposal procedures.
If asbestos material is more than slightly damaged, or if you are going
to make changes in your home that might disturb it, repair or removal
by a professional is needed. Before you have your house remodeled, find
out whether asbestos materials are present.
How To Identify Materials That Contain Asbestos
You can't tell whether a material contains asbestos simply by looking
at it, unless it is labeled. If in doubt, treat the material as if it
contains asbestos or have it sampled and analyzed by a qualified
professional. A professional should take samples for analysis, since a
professional knows what to look for, and because there may be an
increased health risk if fibers are released. In fact, if done
incorrectly, sampling can be more hazardous than leaving the material
alone. Taking samples yourself is not recommended. If you nevertheless
choose to take the samples yourself, take care not to release asbestos
fibers into the air or onto yourself. Material that is in good
condition and will not be disturbed (by remodeling, for example) should
be left alone. Only material that is damaged or will be disturbed
should be sampled. Anyone who samples asbestos-containing materials
should have as much information as possible on the handling of asbestos
before sampling, and at a minimum, should observe the following
procedures:
- Make sure no one else is in the room when sampling is done.
- Wear disposable gloves or wash hands after sampling.
- Shut down any heating or cooling systems to minimize the spread of any released fibers.
- Do not disturb the material any more than is needed to take a small sample.
- Place a plastic sheet on the floor below the area to be sampled.
- Wet the material using a fine mist of water containing a few
drops of detergent before taking the sample. The water or detergent
mist will reduce the release of asbestos fibers.
- Carefully cut a piece from the entire depth of the material
using, for example, a small knife, corer, or other sharp object. Place
the small piece into a clean container (for example, a 35 mm film
canister, small glass or plastic vial, or high quality resealable
plastic bag).
- Tightly seal the container after the sample is in it.
Carefully dispose of the plastic sheet. Use a damp paper towel to clean
up any material on the outside of the container or around the area
sampled. Dispose of asbestos materials according to state and local
procedures.
Label the container with an identification number and clearly state when and where the sample was taken.
Patch the sampled area with the smallest possible piece of duct tape to prevent fiber release.
Send the sample to an asbestos analysis laboratory accredited by the
National Voluntary Laboratory Accreditation Program (NVLAP) at the
National Institute of Standards and Technology (NIST). A directory of
NVLAP-accredited laboratories is available on the NVLAP web site. Your
state or local health department may also be able to help.
How To Manage An Asbestos Problem
If the asbestos material is in good shape and will not be disturbed, do
nothing! If it is a problem, there are two types of corrections: repair
and removal.
REPAIR usually involves either sealing or covering asbestos material.
Sealing (encapsulation) involves treating the material with a sealant
that either binds the asbestos fibers together or coats the material so
fibers are not released. Pipe, furnace, and boiler insulation can
sometimes be repaired this way. This should be done only by a
professional trained to handle asbestos safely.
Covering (enclosure) involves placing something over or around the
material that contains asbestos to prevent release of fibers. Exposed
insulated piping may be covered with a protective wrap or jacket.
With any type of repair, the asbestos remains in place. Repair is
usually cheaper than removal, but it may make later removal of
asbestos, if necessary, more difficult and costly. Repairs can either
be major or minor.
Asbestos Do's And Don'ts For The Homeowner
Do keep activities to a minimum in any areas having damaged material that may contain asbestos.
- Do take every precaution to avoid damaging asbestos material.
- Do have removal and major repair done by people trained and
qualified in handling asbestos. It is highly recommended that sampling
and minor repair also be done by asbestos professionals.
- Don't dust, sweep, or vacuum debris that may contain asbestos.
- Don't saw, sand, scrape, or drill holes in asbestos materials.
- Don't use abrasive pads or brushes on power strippers to strip
wax from asbestos flooring. Never use a power stripper on a dry floor.
- Don't sand or try to level asbestos flooring or its backing. When
asbestos flooring needs replacing, install new floor covering over it,
if possible.
- Don't track material that could contain asbestos through the
house. If you cannot avoid walking through the area, have it cleaned
with a wet mop. If the material is from a damaged area, or if a large
area must be cleaned, call an asbestos professional.
Major repairs: Must be
done only by a professional trained in methods for safely handling
asbestos. Minor repairs should also be done by professionals since
there is always a risk of exposure to fibers when asbestos is
disturbed.
Doing minor repairs: yourself
is not recommended since improper handling of asbestos materials can
create a hazard where none existed. If you nevertheless choose to do
minor repairs, you should have as much information as possible on the
handling of asbestos before doing anything. Contact your state or local
health department or regional EPA office for information about asbestos
training programs in your area. Your local school district may also
have information about asbestos professionals and training programs for
school buildings. Even if you have completed a training program, do not
try anything more than minor repairs. Before undertaking minor repairs,
carefully examine the area around the damage to make sure it is stable.
As a general matter, any damaged area which is bigger than the size of
your hand is not a minor repair.
Before undertaking minor repairs, be sure to follow all the precautions
described earlier for sampling asbestos material. Always wet the
asbestos material using a fine mist of water containing a few drops of
detergent. Commercial products designed to fill holes and seal damaged
areas are available. Small areas of material such as pipe insulation
can be covered by wrapping a special fabric, such as rewettable glass
cloth, around it. These products are available from stores (listed in
the telephone directory under Safety Equipment and Clothing") which
specialize in asbestos materials and safety items.
Note: REMOVAL is usually the
most expensive method and, unless required by state or local
regulations, should be the last option considered in most situations.
This is because removal poses the greatest risk of fiber release.
However, removal may be required when remodeling or making major
changes to your home that will disturb asbestos material. Also, removal
may be called for if asbestos material is damaged extensively and
cannot be otherwise repaired. Removal is complex and must be done only
by a contractor with special training. Improper removal may actually
increase the health risks to you and your family.
Do not dust, sweep, or vacuum debris that may contain asbestos.
These steps will disturb tiny asbestos fibers and may release them into
the air. Remove dust by wet mopping or with a special HEPA vacuum
cleaner used by trained asbestos contractors.
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