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LEARN MORE ABOUT ASBESTOS

What Is Asbestos?

Asbestos is a mineral fiber. It can be positively identified only with a special type of microscope. There are several types of asbestos fibers. In the past, asbestos was added to a variety of products to strengthen them and to provide heat insulation and fire resistance. 

How Can Asbestos Affect My Health?

From studies of people who were exposed to asbestos in factories and shipyards, we know that breathing high levels of asbestos fibers can lead to an increased risk of: 

  • lung cancer
  • mesothelioma, a cancer of the lining of the chest and the abdominal cavity; and
  • asbestosis, in which the lungs become scarred with fibrous tissue.

The risk of lung cancer and mesothelioma increases with the number of fibers inhaled. The risk of lung cancer from inhaling asbestos fibers is also greater if you smoke. People who get asbestosis have usually been exposed to high levels of asbestos for a long time. The symptoms of these diseases do not usually appear until about 20 to 30 years after the first exposure to asbestos. 

Most people exposed to small amounts of asbestos, as we all are in our daily lives, do not develop these health problems. However, if disturbed, asbestos material may release asbestos fibers, which can be inhaled into the lungs. The fibers can remain there for a long time, increasing the risk of disease. Asbestos material that would crumble easily if handled or that has been sawed, scraped or sanded into a powder, is more likely to create a health hazard. 

Where Can I Find Asbestos And When Can It Be A Problem?

Most products made today do not contain asbestos. Those few products made which still contain asbestos that could be inhaled are required to be labeled as such. Up until the 1970s, many types of building products and insulation materials used in residential areas contained asbestos. Common products that might have contained asbestos in the past and conditions which may release fibers, include: 

  • STEAM PIPES, BOILERS, and FURNACE DUCTS insulated with an asbestos blanket or asbestos paper tape. These materials may release asbestos fibers if damaged, repaired or removed improperly.
  • RESILIENT FLOOR TILES (vinyl asbestos, asphalt, and rubber), the backing on VINYL SHEET FLOORING, and ADHESIVES used for installing floor tile. Sanding tiles can release fibers.
  • CEMENT SHEET, MILLBOARD, and PAPER used as insulation around furnaces and wood burning stoves. Repairing or removing appliances may release asbestos fibers; so may cutting, tearing, sanding, drilling or sawing insulation.
  • DOOR GASKETS in furnaces, wood stoves, and coal stoves. Worn seals can release asbestos fibers during use.
  • SOUNDPROOFING OR DECORATIVE MATERIAL sprayed on walls and ceilings. Loose, crumbly or water-damaged material may release fibers. So will sanding, drilling or scraping the material.
  • PATCHING AND JOINT COMPOUNDS for walls and ceilings and TEXTURED PAINTS. Sanding, scraping or drilling these surfaces may release asbestos.
  • ASBESTOS CEMENT ROOFING, SHINGLES and SIDING. These products are not likely to release asbestos fibers unless they are sawed, drilled or cut.
  • ARTIFICIAL ASHES AND EMBERS sold for use in gas-fired fireplaces. Also, other older household products such as FIREPROOF GLOVES, STOVE-TOP PADS, IRONING BOARD COVERS and certain HAIRDRYERS.
  • AUTOMOBILE BRAKE PADS AND LININGS, CLUTCH FACINGS and GASKETS.

Where Asbestos Hazards May Be Found In The Home

  • Some roofing and siding shingles are made of asbestos cement.
  • Houses built between 1930 and 1950 may have asbestos as insulation.
  • Asbestos may be present in textured paint and in patching compounds used on wall and ceiling joints. Their use was banned in 1977.
  • Artificial ashes and embers sold for use in gas-fired fireplaces may contain asbestos.
  • Older products such as stovetop pads may have some asbestos compounds.
  • Walls and floors around wood burning stoves may be protected with asbestos paper, millboard or cement sheets.
  • Asbestos is found in some vinyl floor tiles and the backing on vinyl sheet flooring and adhesives.
  • Hot water and steam pipes in older houses may be coated with an asbestos material or covered with an asbestos blanket or tape.
  • Oil and coal furnaces and door gaskets may have asbestos insulation.

What Should Be Done About Asbestos In The Home?

If you think asbestos may be in your home, donít 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. Donít 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 airflow.  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, stovetop 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 canít 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.

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.  

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 Doís And Doníts 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.
  • Donít dust, sweep or vacuum debris that may contain asbestos.
  • Donít saw, sand, scrape or drill holes in asbestos materials.
  • Donít use abrasive pads or brushes on power strippers to strip wax from asbestos flooring. Never use a power stripper on a dry floor.
  • Donít sand or try to level asbestos flooring or its backing. When asbestos flooring needs replacing, install new floor covering over it, if possible.
  • Donít 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 glass cloth, around it. These products are available from stores (listed in the telephone directory under Safety Equipment and ClothingĒ) which specialize in asbestos materials and safety items. 

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. 

If You Hire A Professional Asbestos Inspector

  • Make sure that the inspection will include a complete visual examination and the careful collection and lab analysis of samples. If asbestos is present, the inspector should provide a written evaluation describing its location and extent of damage, and give recommendations for correction or prevention.
  • Make sure an inspecting firm makes frequent site visits if it is hired to assure that a contractor follows proper procedures and requirements. The inspector may recommend and perform checks after the correction to assure the area has been properly cleaned.

Caution! 

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.

For more information

Contact your local American Lung Association for copies of: 

  • Indoor Air Pollution Fact Sheet - Asbestos
  • Air Pollution In Your Home?
  • Other publications on indoor pollution

For more information on asbestos identification and control activities, contact the Asbestos Coordinator in the EPA Regional Office for your region or your state or local health department. 

Source: American Lung Association, the US Consumer Product Safety Commission, and the US Environmental Protection Agency

 

All Clear Environmental, Inc.
License #824771
DOSH #897
Serving Southern California
office: 818-762-2030
fax: 818-762-8931

email: info@aclear.net

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