How do you identify asbestos tiles?

• <div><p>If you can locate building records, you may be able simply to see what type of tiles (or bonding agent) was used. Any flooring made between 1950 and 1989 more than likely contains asbestos. <a href="https://www.angi.com/articles/how-to-tell-if-you-have-asbestos-floor-tile.htm">Asbestos tiles</a> can also be slightly thicker than other tiles and often measure 9” x 9”, 12” x 12”, and 18” x 18. Black mastic was a commonly used adhesive that contains asbestos.</p></div>

How long does it take for asbestos to harm you?

• <div><p>According to the National Cancer Institute, asbestos-related diseases can take anywhere from <b>10 to 40 years</b> for symptoms to appear. The health risks increase with prolonged and heavier exposure. Risk factors also include:</p><ul><li><p>Amount of exposure</p></li><li><p>Chemical makeup, size, and shape of the asbestos fibers</p></li><li><p>Length of time a person is exposed to asbestos</p></li><li><p>Genetic factors </p></li><li><p>Source of exposure (direct exposure or secondhand exposure from someone directly exposed)</p></li></ul><p></p></div>

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*The Angi rating for Percolation Testing companies in Represa, CA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Percolation Testing needs.

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Last update on February 19, 2026

Reviewed in February 2026
Mike was very helpful and professional. He came out same day and did a quick inspection for any apparent mold or water damage/leaks. Ultimately saved hundreds on further testing that wasn’t necessary. Appreciated his transparency and hospitality overall great experience would use again in the...
PuroClean of Rocklin
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Reviewed in January 2025
Yes. They were efficient, neat and so good about explaining all the processes and answering all my questions. Just had the testing done and it?s above standard!
Maverick Electrical Services, LLC
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Reviewed in June 2022
I was very happy to learn that Norcal was able to perform an asbestos test the same day that I called.
Norcal Environmental Management, Inc.
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Reviewed in October 2019
Barry brought over the pump and hose. I cleaned the bottom and sides as the pool drained. Then refilled the pool. Barry came over with all of the chemicals and said wait a week then have it tested. Went to Leslie's today with a water sample and don't need anything Price was $275. other...
Splash Pool Care
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Reviewed in June 2015
Jack was professional and answered all my questions. He was able to perform a mold test when I was available which was very convenient for me. I would recommend
Superior Home Solutions
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Reviewed in June 2015
<p>The plumber and I'm assuming his apprentice showed up between the time they were slotted. They began their work by installing a water hammer and a new angle stop on the hallway bathroom. The water hammer was $172.00. I told him if he thinks it will solve the problem, go ahead and do it. ...
Ace Plumbing Heating & Air Conditioning
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Reviewed in April 2015
Carl was very knowledgeable and also personable. He came over immediately to perform the tests, sent it to the lab and we had the results 2 days later.
A1 Certified Environmental
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Reviewed in March 2014
Jason P, the plumber, showed up the first day to inspect the job-did a test to show the re-circulator (14 years old) was not working---needed a part that had to be ordered and returned to complete the job the next day-left the work area spotless, was very cordial and knowledgable--explained to...
Bonney Plumbing Heating Air & Rooter Service
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Percolation Tests questions, answered by experts

Asbestos itself does not typically leak from a roof. However, if an asbestos-containing roof is damaged or deteriorated, it can release asbestos fibers into the air. This can occur when the roof is disturbed, such as during maintenance or repairs, or due to weathering over time. Exposure to airborne asbestos fibers can be harmful to health, so it is important to address any damaged asbestos roofs promptly and safely.

If you can locate building records, you may be able simply to see what type of tiles (or bonding agent) was used. Any flooring made between 1950 and 1989 more than likely contains asbestos. Asbestos tiles can also be slightly thicker than other tiles and often measure 9” x 9”, 12” x 12”, and 18” x 18. Black mastic was a commonly used adhesive that contains asbestos.

According to the National Cancer Institute, asbestos-related diseases can take anywhere from 10 to 40 years for symptoms to appear. The health risks increase with prolonged and heavier exposure. Risk factors also include:

Amount of exposure
Chemical makeup, size, and shape of the asbestos fibers
Length of time a person is exposed to asbestos
Genetic factors
Source of exposure (direct exposure or secondhand exposure from someone directly exposed)

Often found in old insulation, tiles, and roofing materials in pre-1980s buildings.

There are products that still contain asbestos, but they were typically installed decades ago. Common places where you may still find asbestos-containing materials are in siding, wrapped around ductwork, in older appliances (i.e., stove and gravity furnaces), and in floors. Asbestos was primarily used as an insulator, so anywhere in an older home where you lose heat is where you will most likely find asbestos.

The Represa, CA homeowners’ guide to percolation testing services

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