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>

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Verified Reviews for Percolation Testing pros in Manassas, VA

*The Angi rating for Percolation Testing companies in Manassas, VA 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 Manassas, VA 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 September 11, 2025

Reviewed in September 2025
It was actually mold spore testing. I hired Exceptional Restoration Services (on Angie) who botched a mold remediation job and contaminated my whole house - I am hypersensitive to mold. NextDay Inspect tested the house and quickly provided a very detailed report of their findings - necessary to...
NextDay Inspect®
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Reviewed in April 2023
Benjamin Ford conducted an annual plumbing inspection of my home. I followed him throughout the house and he explained each test that he was doing. Ben was very knowledgeable and patient as he explained what he was seeing. He suggested that I consider replacing 3 water shut off valves that...
F.H. Furr Plumbing Heating AC & Electrical
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Reviewed in October 2020
Very honest inspector. When determined no mold, he provided guidelines to remove stains and repair a small leak in the shower. If I need similar testing in the future, I'll definitely call again. Didn't try to make the problem into something it wasn't and didn't insult my intelligence.
CSI Home & Commercial Services
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Reviewed in September 2020
After the visual inspection, the technician told me there was definitely mold in the HVAC system and recommended we do the remediation. The cost: $1500. I decided on going ahead with the testing first just to be sure we had mold before spending that much money. The test was simple enough. The...
EnviroPure
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Reviewed in January 2020
It was a 100% perfect. The client was very satisfied with his work. They were very reliable, on time and they did the mold testing in a timely manner
Atlantic Coast Inspection Services, LLC
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Reviewed in December 2019
Very pleased with the work and post-testing results.
JK Radon, LLC
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Reviewed in October 2018
Hired to conduct mold testing. They were out promptly. They explained the process before everything started. Start to finish, they took about 30 minutes. We had results the next day (mold inside was comparable or less to mold outside). Competitive and would likely call them again if conditions...
Lightspeed Restoration of Alexandria and Fairfax
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Reviewed in September 2018
Overall great; I supplied some of the hardware (specialty mixing valve), one of which failed the pressure test. Tech (Larry) had to come back at nominal fee (very reasonable) once Moen had replaced my valve; Larry gave me great system q/c and walked through everything I needed to think of in...
Cardinal Plumbing Heating & Air Inc
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Reviewed in July 2017
Free water test assisted in correct purchase of pool supplies.
Anthony & Sylvan Pools
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Percolation Tests questions, answered by experts

Often found in old insulation, tiles, and roofing materials in pre-1980s buildings.

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.

Mold, VOCs, radon, carbon monoxide, and particulate matter are typically measured.

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)

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

The Manassas, VA 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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