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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Q: Is asbestos cancerous?

• <div><p>Asbestos is absolutely cancerous. In fact, around 4% of all lung cancer cases are the result of asbestos exposure. This is why we recommend a full, professional removal and cleaning of any asbestos found in your home. If you are unsure whether there is any present, you should call a pro who will inspect your property.</p></div>

Q: What magnification do you need to see asbestos fibers?

• <div><p>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.</p></div>

Q: How long do asbestos fibers stay in the air?

• <div><p>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.</p></div>

Q: Does knob and tube wiring have asbestos?

• <div><p>Knob and tube wiring is an older type of electrical wiring that's no longer used and <a href="https://www.angi.com/articles/knob-and-tube-electrical-wiring-safe.htm">generally not considered safe</a>. 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.</p></div>

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Verified Reviews for Percolation Testing pros in Washburn, ND

*The Angi rating for Percolation Testing companies in Washburn, ND 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 Washburn, ND 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 06, 2025

Reviewed in May 2025
I had Isaiah finish our basement for us, paneling, flooring, and trim. Did a great job!
Geiger Contracting, LLC.
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Reviewed in January 2022
My shower turned out great and was done in 1 day!
Your Home Improvement Company, LLC
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Reviewed in August 2021
I was very happy with all aspects of work that was done, communication was great, they have a great setup for there processes. I would highly recommend them, and would use them again in the future.
HomeSpect ND
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Reviewed in July 2021
Fantastic job. Very easy to work with and he did an excellent job. Exceeded all expectations.
American Veteran Home Inspector, LLC - Unlicensed Contractor
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Reviewed in September 2020
I would use them again and would recommend them to others. I have done some roofing and they did a good job. The rows were straight and properly nailed and installed. They had to fight some weather conditions and did well. Good communication
Kilen Enterprise, Inc.
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Reviewed in May 2020
He is a jack of all trades, so if anyone is looking for a small job done he can get it done. He even renovates bathrooms and kitchens.
AT Remodeling
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Reviewed in April 2016
Called them and they showed up one hour later, the electrician was extremely friendly, and honest. Really appreciated their service and will definitely call them next time I need an electrician.
Double D Electric, LLC
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Reviewed in January 2014
They are very prompt and do a great job. The only complaint I would have is that their delivery and rental charges are quite high but that is in part due to low competition in this area .
ARMSTRONG SANITATION
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Percolation Tests questions, answered by experts

Asbestos is absolutely cancerous. In fact, around 4% of all lung cancer cases are the result of asbestos exposure. This is why we recommend a full, professional removal and cleaning of any asbestos found in your home. If you are unsure whether there is any present, you should call a pro who will inspect your property.

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.

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.

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.

The Washburn, ND homeowners’ guide to percolation testing services

From average costs to expert advice, get all the answers you need to get your job done.

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