Real Estate Term of the Day: Asbestos ASBESTOS – insulation material frequently used in older buildings as pipe wrap, boiler insulation, floor tile, and ceiling coating (called Asbestos-Containing Material or ACM).  Asbestos may become brittle with age.  In that condition, it may crumble and release particles which, like dust, become airborne.  Breathing asbestos particles may … More Real Estate Term of the Day: Asbestos