The short answer
The Risks of DIY Testing
Asbestos is a hazardous material that was commonly used in building products until the late 1970s. If you suspect asbestos in your home, disturbing it without proper precautions can release microscopic fibers that are dangerous to inhale. These fibers can remain in the air for hours and may cause serious health issues over time.
The pros who handle asbestos use specialized equipment and follow strict safety protocols. They wear protective gear and use wet methods to keep fibers from becoming airborne. Without this training, you risk exposing yourself and your family. Even a small sample taken improperly can create a hazard.
What a Home Test Kit Involves
Home test kits typically include a collection bag, gloves, and instructions for taking a sample. You must carefully remove a small piece of material, place it in the bag, and mail it to a lab. The lab then analyzes the sample using polarized light microscopy or transmission electron microscopy.
The accuracy of the result depends on how well you collect the sample. If you sample the wrong layer or contaminate the sample, the lab may give a false negative. That could lead you to believe an area is safe when it is not. For reliable results, the pros recommend having a professional take the sample.
- Wet the material with water to reduce fiber release.
- Wear a respirator with a P100 or HEPA filter, not a dust mask.
- Seal the sample in a leak-proof container immediately.
- Clean the area thoroughly with a damp cloth after sampling.
- Dispose of any contaminated clothing or materials properly.
When to Call the Pros
If your home was built before 1980, asbestos may be present in insulation, floor tiles, ceiling tiles, siding, or pipe wrap. If you plan to renovate or demolish any part of the structure, you should have a professional assessment. The pros can identify all asbestos-containing materials and advise on safe handling.
In humid coastal areas, older homes may have damaged materials from moisture and weather. Damaged asbestos is more dangerous because fibers are more likely to be released. If you see crumbling or friable material, do not touch it. Call a professional who can test and, if needed, remediate.
Understanding Lab Results
Lab results will tell you if asbestos is present and what type it is. There are six regulated types, and some are more hazardous than others. The results will also indicate the percentage of asbestos in the sample, which helps determine the level of risk.
If asbestos is confirmed, you need a plan for management or removal. In many cases, encapsulation or enclosure is safer and cheaper than removal. A professional can help you decide the right course of action. Always keep records of the test results for future reference.
Safety Precautions for Any Sampling
If you decide to take a sample yourself, take every precaution to minimize fiber release. Work in a well-ventilated area, but avoid using fans that could spread fibers. Wear disposable gloves and a respirator. After sampling, double-bag the sample and label it clearly.
After you have collected the sample, clean the area with a wet cloth, not a vacuum. Vacuuming can stir up fibers. Wash your clothes separately and shower after handling the material. These steps reduce but do not eliminate the risk. For peace of mind, consider hiring a professional.
- Turn off any HVAC systems to prevent fiber spread.
- Use a spray bottle to mist the material before cutting.
- Cut with a sharp knife or chisel, not a saw.
- Place the sample in a sealed plastic bag, then another.
- Wash your hands and face thoroughly after handling.
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Call Now (617) 404-2753Frequently asked questions
Can I buy an asbestos test kit at a hardware store?
Yes, many hardware stores sell test kits. However, the kit only provides the collection materials. The actual analysis is done by a lab you send the sample to. Follow the instructions carefully to avoid contamination. For a more reliable result, have a professional collect the sample.
How much does asbestos testing cost?
The cost depends on the number of samples and the lab you choose. A single sample analysis may cost $50 to $150, but prices vary. If you hire a professional to take samples, the total will include their time and travel. Always ask for a detailed breakdown before agreeing.
What should I do if the test comes back positive?
If the test is positive, avoid disturbing the material. Seal off the area if possible and limit access. Contact a qualified asbestos abatement professional to discuss options. They can recommend encapsulation, enclosure, or removal. Do not attempt to remove large amounts yourself.