How long does it take for asbestos to harm you?

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

Is it safe to cover an asbestos popcorn ceiling?

• <div><p>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. </p></div>

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*The Angi rating for Percolation Testing companies in Nottingham, MD 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 Nottingham, MD 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 30, 2025

Reviewed in July 2025
After consulting with 4 companies, we chose Purfect Water Solutions for their unmatched knowledge, excellent pricing, and lifetime warranty on their systems. Curtis was incredibly thorough, explaining the impact of each water test on health—something no other company did. We went with the...
Purfect Water Solutions, Inc.
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Reviewed in January 2023
I would highly recommend Peopleâ s Choice Inspections LLC. The service was great. Chris took his time in explaining what type of inspection was needed, when the test results were available, (three Days), Chris called me at 6;30 P.M. to explain each detail of the report.
People's Choice Inspections, LLC
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Reviewed in February 2020
The testing went well and Dirk, the representative was very professional and explained things well.
York Home Performance
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Reviewed in July 2019
He was prompt and courteous. I had a sump pump replaced. He tested it and left the area neat when he left.
Remedy Plumbing & Drain Cleaning, LLC
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Reviewed in January 2019
We use them because they are unbiased and their report is thorough and fact based because they are not affiliated with any water proofing companies. He writes a scope of work with specific procedures and products that will be used. After the work is done they follow up with another lab sample to...
Jenkins Environmental, Inc.
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Reviewed in June 2018
Went very well. Mr. Rowley knew exactly what to do to collect good samples from the area in question. He sent the samples to a certified lab for testing and promptly emailed me the final detailed report within approx. 24 hrs.
Titleist Testing LLC
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Reviewed in April 2018
Perfect. They offered both dust swipes and lead free testing, my house qualified for lead free. They were on time and made the process simple.
Home Free Lead Inspections
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Reviewed in January 2018
I wanted my basement laundry room tested for mold before I have it finished with drywall. Jerry did a mold inspection of my basement and saw no active mold. No Air quality test was required based on his inspection. He made some recommendation for keeping the basement dry. There was no charge for...
Eco Pro Restoration
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Reviewed in May 2015
After a brief conversation over email, I learned that the lead tests that Accutest performs would probably not be the best fit for my specific needs (due to the building age/type etc), but several other vendors that provide those other tests were provided. Very honest and professional...
Accutest Lead Inspections
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Reviewed in August 2014
They were thorough and professional and provided a nicely prepared report. However, they would not / could not finish the blower door portion of the test until we made certain home improvement corrections (remediating some asbestos, checking certain places for mold) so we haven't really gotten...
Efficient Home
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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.

Common areas include insulation, flooring, ceilings, and siding in older buildings. Professionals identify potential risks.

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)

Epoxying over asbestos tiles is generally considered a safe option when done correctly. Epoxy acts as a sealant, encapsulating the asbestos tiles and preventing the release of asbestos fibers into the air. The key is ensuring that the asbestos tiles are in good condition, firmly adhered to the substrate, and not damaged or deteriorating. This method is only appropriate for tiles that are undamaged and securely in place. If the asbestos tiles are already loose, damaged, or deteriorating, encapsulating them with epoxy may not be a sufficient solution, as it might not address the potential for ongoing asbestos exposure.

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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