How long does it take for asbestos to harm you?

• <div>According to the National Cancer Institute, asbestos-related diseases can take anywhere from 10 to 40 years for symptoms to appear. The health risks increase with prolonged and heavier exposure. Risk factors also include:<ul><li>Amount of exposure</li><li>Chemical makeup, size, and shape of the asbestos fibers</li><li>Length of time a person is exposed to asbestos</li><li>Genetic factors </li><li>Source of exposure (direct exposure or secondhand exposure from someone directly exposed)</li></ul></div>

Is it safe to cover an asbestos popcorn ceiling?

• <div>Some pros may recommend covering a popcorn ceiling that tests positive for asbestos with beadboard ceiling planks or drywall. The <a href="https://www.angi.com/articles/cost-to-install-beadboard-over-popcorn-ceiling.htm">cost to install a beadboard ceiling</a> averages more than $5,000, but you likely will pay more than the average for the installer to deal with the asbestos safely. Installing a beadboard ceiling or new drywall will disturb the asbestos and release some microscopic fibers, so the installer will need to take precautions. </div>

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

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Last update on December 08, 2025

Reviewed in December 2025
Fantastic work. Clean installation of my new boiler. Checked/tested and re-checked. Runs like a top and a very reasonable price. Pleasant experience all around. Do not hesitate to sign onto your next job. I'm VERY happy.
Charles Mechanical
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Reviewed in May 2024
Very helpful - I had to move up my appointment, and Tri-State Mold was able to accommodate me AND save me money, doing the inspection and sending it out for testing promptly. I am very satisfied with the results.
Tri State Mold Solutions, Inc
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Reviewed in July 2023
I worked with Gary today who was excellent at helping us get very thorough testing for asbestos and mold in our home. He was lovely to work with, highly knowledgeable and also very thorough with testing recommendations and also letting us know which ones would not be helpful. The testing only...
Clawback, Inc.
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Reviewed in October 2021
Awful, awful, awful. Finished product has stains & cracks, which A&S reps claimed was "normal." Then they blamed the water . . . which they never tested, either before or after the job. (Our municipality has received awards for the high quality of its drinking water.) Project manager finally...
Anthony & Sylvan Pools
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Reviewed in October 2019
Ivan Camacho was terrific. He clearly explained the various test functions and their importance in boiler safety. He couldn't have been nicer.
Sila Heating, Cooling and Plumbing
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Reviewed in May 2018
I had gas leak in the utility closet where the gas meter was kept. I was advised that tightening one fitting can cause problems to arise in other areas, and that I might still have to call ConEd to turn off the gas. I was given the option of having their plumber try to fix the leak, or calling...
Flotechs Plumbing Inc
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Reviewed in August 2017
Excellent. Charles is very knowledgeable and spent a lot of time explaining the different facets of testing.
Environmental Assessments & Solutions, Inc.
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Reviewed in June 2017
Very attentive to my needs. Answered questions took time to explain did testing had the answer 
MILLER-CLARK ANIMAL HOSPITAL
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Reviewed in February 2016
Great service. They arranged the test with my real estate broker so I did not need to meet them in person myself. Performed the test on time and sent the report via email promptly. I got a deal through Angie's List - cheap, professional and prompt. What more could you want? 
True View Home Inspections
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Reviewed in August 2014
Mr. Daniello was professional, pleasant and knowledgeable regarding mold testing. He was punctual for both testing appointments. Since this was our first time dealing with a mold problem in our home, Mr. Daniello was extremely helpful. The mold testing process was explained by Mr. Daniello....
A-Tech Mold Inspections NY - NJ
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Top-Rated Percolation testing pros in Larchmont - Updated Nov 2026

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Percolation Tests FAQs, answered by experts

According to the National Cancer Institute, asbestos-related diseases can take anywhere from 10 to 40 years for symptoms to appear. The health risks increase with prolonged and heavier exposure. Risk factors also include:

Amount of exposure
Chemical makeup, size, and shape of the asbestos fibers
Length of time a person is exposed to asbestos
Genetic factors
Source of exposure (direct exposure or secondhand exposure from someone directly exposed)

Although the use of asbestos has declined since the 1980s, it remains in several different types of building construction materials for insulation and as a fire retardant. Typically, asbestos can be found in materials such as ceiling and floor tiles, heat-resistant fabrics and coatings, and roof shingles. You may also find asbestos in textured paint and patching compounds.

Sampling typically takes 1-3 hours, and depending on the provider, lab results are available within 2-7 days.

Asbestos itself does not typically leak from a roof. However, if an asbestos-containing roof is damaged or deteriorated, it can release asbestos fibers into the air. This can occur when the roof is disturbed, such as during maintenance or repairs, or due to weathering over time. Exposure to airborne asbestos fibers can be harmful to health, so it is important to address any damaged asbestos roofs promptly and safely.

Some pros may recommend covering a popcorn ceiling that tests positive for asbestos with beadboard ceiling planks or drywall. The cost to install a beadboard ceiling averages more than $5,000, but you likely will pay more than the average for the installer to deal with the asbestos safely. Installing a beadboard ceiling or new drywall will disturb the asbestos and release some microscopic fibers, so the installer will need to take precautions.

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