Caulking: Does It Have Asbestos or PCBs…Or Both?
By Robert J. DeMalo, M.Sc., EMSL Analytical, Inc. — Healthy Indoors Magazine‘s February 2020 Cover Story: https://hi.healthyindoors.com/i/1216998-hi-february-2020/21 Background Most people are aware that exposure to asbestos or polychlorinated biphenyls (PCBs) can be hazardous, but far fewer know that some types of caulking used in the past contain both asbestos and PCBs. In fact, there are