What are the signs of asbestos?

• <div><p>Unlike some home problems, such as water damage or pest infestations, asbestos can be very difficult to spot. Asbestos is a mineral in the form of microscopic fibers and was previously used in building materials for its bonding and fireproofing abilities. Insulation, roof shingles, ceiling tiles, floor tiles, pipe wrappings, soundproofing materials, and textured paint features like popcorn ceilings are common sources of asbestos, particularly in homes built before 1980.</p><p>Age is perhaps the biggest indicator of asbestos, as legislation passed in the 1970s labeled asbestos as dangerous and regulated its use in building materials. Signs of age in the form of wear and tear or material degradation are also indicators that asbestos fibers may be leaking into the air, but ultimately, it’s difficult to detect with the naked eye. If you have reason to suspect asbestos in your home, it’s best to hire a certified asbestos inspector.</p></div>

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*The Angi rating for Percolation Testing companies in San Anselmo, 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 San Anselmo, 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 July 23, 2026

Reviewed in July 2026
We recently used MFernandez CONSTRUCTION INC. to completely gut and remodel our kitchen and we couldn’t be happier with the results! From the start. MFernandez CONSTRUCTION INC. was incredibly communicative and helped us optimize our layout they installed new cabinets, floors and finished the...
MFernandez Construction Inc.
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Reviewed in May 2025
The job was great I was really excited about the results
Good Guys Services
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Reviewed in October 2021
Fixed the dripping faucet and was a nice guy
Oak Plumbing Inc
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Reviewed in January 2021
J has tutored me from geometry through pre-calculus (all honors courses) and he has not only helped me get my test scores to one of the top in the class, but we have also been able to get ahead in classes and think about problems more for understanding rather than solely memorization. J does not...
studyBuddyJ.com
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Reviewed in August 2019
After a brief period of essential hammering in the attic and testing for air leakage, the work was done silently. The very pleasant installation crew was unobtrusive and efficient. I was amazed the "blowing in" process could be so quiet and clean. Not a drop of insulation escaped the...
Applied Building Science
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Reviewed in February 2014
A number of tests were made, and careful analysis leading to the right solution.
Ongaro & Sons
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Reviewed in December 2012
They found nothing, gave us a bill for 295 and recommended an infrared test costing 500 which they could not do until much later. Note that they said over the phone that the amount was for 2 hours of leak detection but they only stayed for 45 minutes. The next day, my wife looked outside and...
American Leak Detection - SF Bay Area
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Reviewed in May 2009
Three bathroom faucets were not working well. I had put off looking for a plumber for some time because of bad experiences and the belief among my friends that an honest plumber is almost impossible to find. Then my garbage disposal failed. So I called Reggie, the plumber one of my neighbors was...
Reggie's Reliable Plumbing Service
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Percolation Tests questions, answered by experts

Unlike some home problems, such as water damage or pest infestations, asbestos can be very difficult to spot. Asbestos is a mineral in the form of microscopic fibers and was previously used in building materials for its bonding and fireproofing abilities. Insulation, roof shingles, ceiling tiles, floor tiles, pipe wrappings, soundproofing materials, and textured paint features like popcorn ceilings are common sources of asbestos, particularly in homes built before 1980.

Age is perhaps the biggest indicator of asbestos, as legislation passed in the 1970s labeled asbestos as dangerous and regulated its use in building materials. Signs of age in the form of wear and tear or material degradation are also indicators that asbestos fibers may be leaking into the air, but ultimately, it’s difficult to detect with the naked eye. If you have reason to suspect asbestos in your home, it’s best to hire a certified asbestos inspector.

Many homeowners may never have to test their homes for asbestos. Asbestos particles are only dangerous if they become airborne. If you plan to do construction or notice damage to piping, siding, or drywall, you should hire a specialist to test for asbestos.

If you plan to remodel your home or have any concerns, you should have your home tested for asbestos just to be safe.

Typical methods for asbestos removal include encapsulation, enclosure, and complete removal.

If asbestos is found, it is crucial to consult with a professional. They will provide recommendations for appropriate abatement actions, which may include safe removal, containment, sealing, or enclosure. All actions must be planned and executed in accordance with local regulations for handling asbestos.

If you suspect exposure to asbestos, prioritize seeking medical advice by informing your healthcare provider about the potential exposure with clear details about the circumstances that led to the exposure. Regular health check-ups and screenings if you work in high-risk industries or live in a home with asbestos are essential for early detection of any asbestos-related conditions. You should also consider consulting occupational health experts or legal professionals for guidance on potential next steps and preventive measures.

The San Anselmo, CA 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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