Asbestos roof shingles is a very used building material since end of 19th century. Because it was discovering that when mix with cement. It was a heat-insulating fiber that has since been able to develop more than three thousand products. It was miraculous fiber. However, in 1980s World Health Organization rates it as a carcinogen. And more than 50 countries banned it. Rest, it continues using it in products of common use that can find in houses and cars.
Those most expose to carcinogenic risk of asbestos roof shingles are construction workers by inhalation of their particles inside factories. But international health agencies warn that there is no safe use of this material. As their fibers have no odor or Taste. Do not dissolve or evaporate and resist high temperatures. Fire, and also degradation by chemical and biological. When ask if population that does not work in asbestos factories is at risk of developing cancer by indirect contact with asbestos
However, in case of hazardous materials, asbestos pipes must be replaced with safety measures by companies that handle them. And must be confine as hazardous waste. Also because there are already asbestos roof shingles substitutes to eliminate this product that is a carcinogen. Continuing to have these pipes is a risk that has not yet been evaluated