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This is another once-popular insulation material now out of favor because of its toxicity. It was used not for wall insulation but to insulate pipes. It is most likely to be found today in houses that are more than forty years old. Intact asbestos is not a hazard, but if it deteriorates, asbestos particles become airborne. In haled, they pose a serious threat of lung cancer.
Removing the asbestos is not always the best solution. Sometimes it is less risky and less expensive simply to encase it.
A competent home inspector will usually be able to tell you if asbestos is present, though sometimes it’s hidden, and sometimes inspectors are sleepy. An asbestos-removal contractor can tell you whether removal or encasement is your best approach.
If you have an asbestos problem, be sure to contact a reputable and experienced removal company. A bad removal job can create a more serious health risk to occupants than just leaving the stuff alone.