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 Donna, TX 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 Donna, TX 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 May 26, 2026

Reviewed in May 2026
El maestro Anzaldua vino a checarme un problema con la luz y me dejó los botones y toda la instalación al tiro. Es muy chambeador, puntual y bien derecho con los precios. Cien por ciento recomendado, un técnico de los que ya casi no hay.
Anzaldua Electrical
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Reviewed in May 2025
We are extremely happy with the results of our new bathroom. Work was clean and met all our needs. Thank you Mr. Jose Estrada and staff.
Estrada Homes of Decor
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Reviewed in March 2025
I hired Jonathan with wicked bull Construction to make me a boardwalk on the side on my home for my backyard wedding that myself and all of my guests loved as I ended up making the space beside the board walk my “memory lane” for all of the passed loved ones! Looking to add a pergola to my...
Wicked Bull Construction
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Reviewed in July 2024
I was very satisfied with the results. They were very courteous and kind.
Sully's Cleaning Service
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Reviewed in May 2024
They did an amazing job, my kitchen looked amazing after they finished.
Crossbow Development
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Reviewed in January 2022
Burl's Plumbing is the best! I highly recommend them. The plumber called before hand and talked me through step by step of everything he was going to work on. He emailed me a detailed invoice of the supplies and labor that was going to be done. When the day come to do the work it was exactly as...
Burl's Plumbing, LLC
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Reviewed in January 2019
I strongly urge anyone who needs responsive, reliable and respectful service to AVOID Homer's Garage Door Services. TAKE THE TIME TO READ THIS. It could save you a lot of time, trouble and money. Homer was at my home 01/02/2019 and, after acknowledging the work was not completed, agreed to...
Homers Garage Door Services
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Reviewed in July 2016
Hector (the owner) was professional, on time, and patient. His crew power washed the entire house, showed great attention to detail, and were neat. Hector even did a test area to make sure the paint I chose what what I wanted. Thank goodness he did this, because I did end up changing my paint...
TRUE COLORS PAINTING INC
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Reviewed in September 2015
<p> </p> <p>Before any work was performed ?Automatic Gates of South Texas? took the time to explain and walk me through the whole job. They were also very open to any questions and suggestions that I had. </p> <p> </p> <p>I was not living in the house that had the gate repaired and automated...
Elite Electric & Automatic Gate of South Texas
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Reviewed in May 2015
I called them in because of was told by other repairman that I needed a new Air conditioner . They showed up very punctual, very courteous, They did some testing and turned out I did not need a new unit. Sigh of relief, so instead they replaced a couple of parts and needless to say I was a...
Advanced Air Conditioning LLC
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Percolation Tests questions, answered by experts

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.

Asbestos fibers can stay airborne for 48 to 72 hours, depending on the home's ventilation. Fibers can linger longer in enclosed spaces with poor airflow. Because the fibers are microscopic, they can easily remain suspended, making them difficult to detect without professional equipment.

Knob and tube wiring is an older type of electrical wiring that's no longer used and generally not considered safe. However, some homes still have it, or may have a knob and tube wiring system that was incorrectly modified or rigged to work with a modern electrical system. Knob and tube wiring may contain asbestos insulation, but the only way to know is to have the material professionally tested.

It is not recommended to drill into asbestos siding because doing so can release hazardous asbestos fibers into the air. The safest way to handle asbestos-containing materials is to have a professional remove or encapsulate them.

If you own a stereo microscope, you should be able to see the fibers. The stereo microscope often can perform magnification up to 50x. But unless you have experience viewing asbestos fibers, you may not know exactly what you are seeing. Some fibers are curly, while others are long and straight. Blue, brown, white, and gray colored fibers are all possible.

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