A member asked:

Im an hvac worker. how do i know if walls i have to drill through have asbestos or not? owners usually seem to not know and not really care either

A doctor has provided 1 answer
Dr. William Weirs answered

Specializes in Integrative Medicine

Hard to say: I would look at the age of the house, with older houses being more suspect. However, you never really know. I would use precautions no matter what including an OSHA certified respirator.

Answered 4/1/2015

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