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Related Experiment Video

Updated: Jun 10, 2026

Effective Analysis of Human Exposure Conditions with Body-worn Dosimeters in the 2.4 GHz Band

Effective Analysis of Human Exposure Conditions with Body-worn Dosimeters in the 2.4 GHz Band

Published on: May 2, 2018

Zonolite attic insulation exposure studies.

William M Ewing¹, Steve M Hays, Richard Hatfield

¹Compass Environmental, Inc., 1751 McCollum Parkway NW, Kennesaw, GA 30144-5908, USA. wmewing@aol.com

International Journal of Occupational and Environmental Health

|July 29, 2010

Summary

This summary is machine-generated.

Exposure to amphibole asbestos from Zonolite attic insulation (ZAI) is minimal when undisturbed. However, activities like cleaning and remodeling significantly increase airborne asbestos concentrations when ZAI is disturbed.

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Whole-Body Nanoparticle Aerosol Inhalation Exposures

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Published on: May 7, 2013

Area of Science:

Environmental Health
Occupational Health
Asbestos Research

Background:

Zonolite attic insulation (ZAI), made from expanded vermiculite, may contain amphibole asbestos.
Concerns exist regarding potential asbestos exposure in homes with ZAI.

Purpose of the Study:

To evaluate amphibole asbestos exposure levels associated with various tasks involving ZAI.
To determine the impact of disturbing ZAI on airborne asbestos concentrations.

Main Methods:

Fieldwork conducted in homes with ZAI.
Collected personal and area air samples for analysis.
Analyzed surface dust and bulk samples for asbestos content.

Main Results:

Airborne amphibole asbestos concentrations were not elevated when ZAI was undisturbed.
Significant increases in airborne amphibole asbestos were observed during ZAI disturbance (cleaning, remodeling, removal).

Conclusions:

Undisturbed ZAI poses minimal risk of elevated airborne amphibole asbestos.
Disturbing ZAI, through activities like cleaning or remodeling, can lead to significant asbestos exposure.