Asbestos is a general name given to a group of minerals that do not dissolve in water or evaporate. Asbestos fibers resist heat and fire and cannot be broken down easily by chemicals or bacteria. Asbestos has been used in many products, such as insulation, floor tile, roofing materials and siding.   Although most of these products are no longer made using asbestos, there is still a risk of exposure to asbestos during renovations and demolitions.