Do you always have to remove asbestos wiring?

• <div><p>If you have an older electrical system with fraying wires and other signs of damage, removal may be the best course of action. When asbestos begins to break down, it's more likely to become airborne, increasing the risk of health issues when it's inhaled.</p><p>However, if the system is in good condition and doesn't have visible signs of wear or damage, leaving it alone may be the safest course of action. An asbestos abatement and removal professional can help you determine the best way to proceed.</p></div>

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*The Angi rating for Percolation Testing companies in Middleton, WI 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 Middleton, WI 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 January 06, 2026

Reviewed in January 2026
Jacob from Southport came out for an on-site inspection of my furnace. He inspected the unit and ran a full set of tests for functionality. I received detailed answers to all my questions, and it was overall a great visit.
Southport Home Services
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Reviewed in September 2023
Doug was extremely thorough and thoughtfully answered all of our questions during the lead investigation and once we had the report. Would definitely recommend for residential lead testing.
Testudo LLC
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Reviewed in June 2022
Rapid response. Testes for the presence of mold. Test indicated none was present. The
Rapid Response Remediation
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Reviewed in March 2022
They did a radon test in a timely fashion. I am going to hire them to do a mitigation service for my ho,e.
Lifetime Home Services
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Reviewed in December 2020
They contacted me promptly, and we made an appt for an estimate. It got delayed a week due to person being exposed to person with COVID. We waited for test results, and he came late the next week. Mold was a small amount to be removed. The workers were masked, polite and finished within an hour.
SERVPRO of Dane County West
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Reviewed in October 2017
no more water leaks but the real test will be next spring.
Tri State Basement Repair
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Reviewed in September 2016
They were significantly cheaper than any other quote i received on this job, their communication was great, and they did what they said they would do when they said they would do it - something that is unfortunately not very common in this business apparently. They made something I knew nothing...
Environmental Construction Services, Inc.
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Percolation Tests questions, answered by experts

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.

Professional asbestos testers or environmental consultants are the best people to call to test for asbestos. An asbestos testing company specializes in collecting and analyzing samples and will be the most qualified to do the job for you. An environmental consultant may not specialize in handling asbestos, but should still have the knowledge and know-how to safely collect a sample and send it off for analysis.

If you have an older electrical system with fraying wires and other signs of damage, removal may be the best course of action. When asbestos begins to break down, it's more likely to become airborne, increasing the risk of health issues when it's inhaled.

However, if the system is in good condition and doesn't have visible signs of wear or damage, leaving it alone may be the safest course of action. An asbestos abatement and removal professional can help you determine the best way to proceed.

Testing and analysis take 10 days to 2 weeks. Expedited services are available for urgent situations typically requiring higher fees.

Asbestos was commonly used in cloth wiring, but not all types of cloth wiring contain it. The age, condition, and appearance of the wiring can provide clues as to whether asbestos is present or not, but the only way to know for sure if the wiring has asbestos is to have it tested.

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