
About Lead Based Paint...
Lead-based paint is hazardous to your health.
Lead-based paint is a major source of lead
poisoning for children and can also affect adults. In children, lead poisoning
can cause irreversible brain damage and can impair mental functioning. It can
retard mental and physical development and reduce attention span. It can also
retard fetal development even at extremely low levels of lead. In adults, it can
cause irritability, poor muscle coordination, and nerve damage to the sense organs
and nerves controlling the body. Lead poisoning may also cause problems with reproduction
(such as a decreased sperm count). It may also increase blood pressure. Thus,
young children, fetuses, infants, and adults with high blood pressure are the
most vulnerable to the effects of lead.
Children should be screened for lead poisoning.
In communities where the houses are old and
deteriorating, take advantage of available screening programs offered by local
health departments and have children checked regularly to see if they are suffering
from lead poisoning. Because the early symptoms of lead poisoning are easy to
confuse with other illnesses, it is difficult to diagnose lead poisoning without
medical testing. Early symptoms may include persistent tiredness, irritability,
loss of appetite, stomach discomfort, reduced attention span, insomnia, and constipation.
Failure to treat children in the early stages can cause long-term or permanent
health damage.
The current blood lead level which defines
lead poisoning is 10 micrograms of lead per deciliter of blood. However, since
poisoning may occur at lower levels than previously thought, various federal agencies
are considering whether this level should be lowered further so that lead poisoning
prevention programs will have the latest information on testing children for lead
poisoning.
Consumers can be exposed to lead from paint.
Eating paint chips is one way young children
are exposed to lead. It is not the most common way that consumers, in general,
are exposed to lead. Ingesting and inhaling lead dust that is created as lead-based
paint "chalks," chips, or peels from deteriorated surfaces can expose
consumers to lead. Walking on small paint chips found on the floor, or opening
and closing a painted frame window, can also create lead dust. Other sources of
lead include deposits that may be present in homes after years of use of leaded
gasoline and from industrial sources like smelting. Consumers can also generate
lead dust by sanding lead-based paint or by scraping or heating lead-based paint.
Lead dust can settle on floors, walls, and
furniture. Under these conditions, children can ingest lead dust from hand-to-mouth
contact or in food. Settled lead dust can re-enter the air through cleaning, such
as sweeping or vacuuming, or by movement of people throughout the house.
Older homes may contain lead based paint.
Lead was used as a pigment and drying agent
in "alkyd" oil based paint. "Latex" water based paints generally
have not contained lead. About two-thirds of the homes built before 1940 and one-half
of the homes built from 1940 to 1960 contain heavily-leaded paint. Some homes
built after 1960 also contain heavily-leaded paint. It may be on any interior
or exterior surface, particularly on woodwork, doors, and windows. In 1978, the
U.S. Consumer Product Safety Commission lowered the legal maximum lead content
in most kinds of paint to 0.06% (a trace amount). Consider having the paint in
homes constructed before the 1980s tested for lead before renovating or if the
paint or underlying surface is deteriorating. This is particularly important if
infants, children, or pregnant women are present.
Consumers can have paint tested for lead.
There are do-it-yourself kits available.
However, the U.S. Consumer Product Safety Commission has not evaluated any of
these kits. One home test kit uses sodium sulfide solution. This procedure requires
you to place a drop of sodium sulfide solution on a paint chip. The paint chip
slowly turns darker if lead is present. There are problems with this test, however.
Other metals may cause false positive results, and resins in the paint may prevent
the sulfide from causing the paint chip to change color. Thus, the presence of
lead may not be correctly indicated. In addition the darkening may be detected
only on very light-colored paint.
Another in-home test requires a trained professional
who can operate the equipment safely. This test uses X-ray fluorescence to determine
if the paint contains lead. Although the test can be done in your home, it should
be done only by professionals trained by the equipment manufacturer or who have
passed a state or local government training course, since the equipment contains
radioactive materials. In addition, in some tests, the method has not been reliable.
Consumers may choose to have a testing laboratory
test a paint sample for lead. Lab testing is considered more reliable than other
methods. Lab tests may cost from $20 to $50 per sample. To have the lab test for
lead paint, consumers may:
• Get sample containers from the lab
or use re-sealable plastic bags. Label the containers or bags with the consumer's
name and the location in the house from which each paint sample was taken. Several
samples should be taken from each affected room (see HUD Guidelines discussed
below).
• Use a sharp knife to cut through
the edges of the sample paint. The lab should tell you the size of the sample
needed. It will probably be about 2 inches by 2 inches.
• Lift off the paint with a clean putty
knife and put it into the container. Be sure to take a sample of all layers of
paint, since only the lower layers may contain lead. Do not include any of the
underlying wood, plaster, metal, and brick.
• Wipe the surface and any paint dust
with a wet cloth or paper
towel and discard the cloth or towel.
The U.S. Department of Housing and Urban
Development (HUD) recommends that action to reduce exposure should be taken when
the lead in paint is greater than 0.5% by lab testing or greater than 1.0 milligrams
per square centimeter by X-ray fluorescence. Action is especially important when
paint is deteriorating or when infants, children, or pregnant women are present.
Consumers can reduce exposure to lead-based paint.
If you have lead-based paint, you should take steps to
reduce your exposure to lead. You can:
1. Have the painted item replaced.
You can replace a door or other easily removed
item if you can do it without creating lead dust. Items that are difficult to
remove should be replaced by professionals who will control and contain lead dust.
2. Cover the lead-based paint.
You can spray the surface with a sealant or
cover it with gypsum wallboard. However, painting over lead-based paint with non-lead
paint is not a long-term solution. Even though the lead-based paint may be covered
by non-lead paint, the lead-based paint may continue to loosen from the surface
below and create lead dust. The new paint may also partially mix with the lead-based
paint, and lead dust will be released when the new paint begins to deteriorate.
3. Have the lead-based paint removed.
Have professionals trained in removing lead-based
paint do this work. Each of the paint-removal methods (sandpaper, scrapers, chemicals,
sandblasters, and torches or heat guns) can produce lead fumes or dust. Fumes
or dust can become airborne and be inhaled or ingested. Wet methods help reduce
the amount of lead dust. Removing moldings, trim, window sills, and other painted
surfaces for professional paint stripping outside the home may also create dust.
Be sure the professionals contain the lead dust. Wet-wipe all surfaces to remove
any dust or paint chips. Wet-clean the area before re-entry. You can remove a
small amount of lead-based paint if you can avoid creating any dust. Make sure
the surface is less than about one square foot (such as a window sill). Any job
larger than about one square foot should be done by professionals. Make sure you
can use a wet method (such as a liquid paint stripper).
4. Reduce lead dust exposure.
You can periodically wet mop and wipe surfaces
and floors with a high phosphorous (at least 5%) cleaning solution. Wear waterproof
gloves to prevent skin irritation. Avoid activities that will disturb or damage
lead based paint and create dust. This is a preventive measure and is not an alternative
to replacement or removal. Professionals are available to remove, replace, or
cover lead-based paint.
Contact your state and local health departments
lead poisoning prevention programs and housing authorities for information about
testing labs and contractors who can safely remove lead-based paint.
The U.S. Department of Housing and Urban
Development (HUD) prepared guidelines for removing lead-based paint which were
published in the Federal Register, April 18, 1990, page 1455614614. Ask contractors
about their qualifications, experience removing lead-based paint, and plans to
follow these guidelines.
• Consumers should keep children and
other occupants (especially infants, pregnant women, and adults with high blood
pressure) out of the work area until the job is completed.
• Consumers should remove all food
and eating utensils from the work area.
• Contractors should remove all furniture,
carpets, and drapes and seal the work area from the rest of the house. The contractor
also should cover and seal the floor unless lead paint is to be removed from the
floor.
• Contractors should assure that workers
wear respirators designed to avoid inhaling lead.
• Contractors should not allow eating
or drinking in the work area. Contractors should cover and seal all cabinets and
food contact surfaces.
• Contractors should dispose of clothing
worn in the room after working. Workers should not wear work clothing in other
areas of the house. The contractor should launder work clothes separately.
• Contractors should clean up debris
using special vacuum cleaners with HEPA (high efficiency particulate air) filters
and should use a wet mop after vacuuming.
• Contractors should dispose of lead-based
paint waste and contaminated materials in accordance with state and local regulations.
Government officials and health professionals continue to develop advice about
removing lead-based paint. Watch for future publications by government agencies,
health departments, and other groups concerned with lead-paint removal and prevention
of lead poisoning.
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