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*The Angi rating for Percolation Testing companies in Norwich, VT 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 August 20, 2025

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Percolation Tests questions, answered by experts

In the 1980s, the use of asbestos in house siding materials underwent a significant decline, ultimately being phased out by the mid-1980s to early 1990s. This change was largely due to a growing awareness of the severe health risks associated with asbestos exposure, particularly its link to lung diseases and cancers. With increased public concern and regulatory agency involvement, building codes and regulations were updated to restrict the use of asbestos in construction materials. 

Since the EPA partially banned asbestos in 1989, it is no longer used to manufacture new siding in the United States; production had largely ceased by the early 1980s. Many other countries, such as Canada, Iceland, and Denmark, also have bans on asbestos. However, asbestos siding is still present in many homes built before the late 1980s. The only definitive way to know if your siding contains asbestos is to have it professionally lab-tested.

Clear the area for access and inform the testing team about the building’s history and renovations.

Asbestos testing takes place in two stages—collection and lab testing. Collection can take less than 20 minutes if a professional manages to get a direct sample. If air samples are required, then the pro will set up a testing device and return to collect it. In both cases, the sample is sent to a lab and results are confirmed or denied usually within one to two days.

Testing is crucial to identify harmful asbestos fibers common in building materials from older properties, ensuring safe environments and health.

The Norwich, VT 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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