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>

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

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

Last update on June 28, 2026

Reviewed in June 2026
I’m happy with the results!
BETTER CITY TREE SERVICES INC
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Reviewed in November 2025
I was very happy with my experience- I had an inspection done and both Sophia and La Quisha were very thorough in their inspection and talking through potential explanations and options. They put me at ease!
Sophie's Pest Solutions
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Reviewed in December 2022
Armando was knowledgeable and thorough. The final test will be to see if the termites return in 6 mow to a year. Service seemed comprehensive and tidy.
Vanguard Termite Control, Inc.
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Reviewed in July 2020
Oak called 2nd but came next day/ UN-prepared to do either repair or water test (requested on phone) or even replace with ready new ADA toilet that the lying receptionist booker said they have “some in stock and if not he will show a catalog of choices”. Guy came punctually with Nzo tools or...
Oak Plumbing Inc
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Reviewed in May 2017
I went on to Angie's List looking for mold remediation. I found this company and they came out and tested for mold. I worked with JC, she used some machines and tested the spore levels for mold. It was very high because there was no ventilation in the bathroom. She recommended some mold...
Certified-Environmental
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Reviewed in October 2016
Smoothly. It was several hours of work by Randy, and the result is a fully functioning fireplace. We are delighted with the result and very appreciative of Kidd Fireplace's action to find and implement a definitive and successful solution. As well, the new fireplace passes the cat test. No more...
Kidd Fireplace & Spa
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Reviewed in September 2016
Testing was complete and results within a few days.
A1 Certified Environmental
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Reviewed in October 2008
The process was mostly smooth, however, there were a few odd miscommunication along the way. The estimator insisted on providing sample paints for us to test. When I asked for some sample paint, the owner of the company complained about the cost, stating each sample would cost him $15! I went to...
CertaPro Painters of Berkeley
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Top-Rated Percolation testing pros in El Sobrante - Updated Nov 2026

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Percolation Tests FAQs, answered by experts

A professional indoor air quality inspection takes anywhere from one to three hours, depending on the size of your home and the number of necessary samples. After the test, the specialist will discuss the findings, but you won’t get a full written report for 2 to 10 days, though you can ask your pro to expedite the process, if needed.

It is strongly advised not to touch or disturb asbestos-containing materials unless necessary. Asbestos fibers can be released into the air when the material is damaged or disturbed, posing serious health risks if inhaled. It is best to leave any handling of asbestos to trained professionals who can remove the asbestos safely.

Yes. Gutting a house to the studs may actually be a good option if you believe a home contains toxic materials like asbestos, mold, or lead paint. However, this must be done under the supervision of licensed remediation experts.

Through air sampling devices and surface swabs in key areas of concern.

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.

The El Sobrante, CA homeowners’ guide to percolation testing services

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