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.