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*The Angi rating for Percolation Testing companies in Charleston, SC 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 Charleston, SC 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 March 03, 2025

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Percolation Tests questions, answered by experts
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Answered by
Angi Expert

The most common sign of asbestos is the age of your home. Asbestos was banned in drywall in 1977, though many products still contained asbestos until the 1980s. Indicators of possible asbestos in your home include:

  • Your home's age, if built before 1980

  • You have a home with vinyl flooring or millboard that was installed between 1952 and 1982

  • Your home has corrugated roofing

  • Your home has walls made from cement sheets

  • Your home has vermiculite insulation 

Helpful?
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Answered by
James M.
on Feb 12, 2025

Asbestos was commonly used in construction before the 1980s. While homes built after that time are unlikely to contain asbestos, there is still a possibility. Asbestos was found in materials such as flooring, drywall/joint compound, ceiling textures (like popcorn ceilings), roofing, siding, felts, HVAC systems, and more. If you're concerned about asbestos in your home, it's important to consult with an experienced asbestos professional to assess the likelihood of its presence.

High Tide Environmental Charleston, SC
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Older textures may contain asbestos, requiring careful handling and professional inspection before work begins to ensure safety compliance.

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.

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. 

Costs depend on test type, home size, number of testing locations, and whether follow-up testing is required.

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