If the asbestos shingles are in good condition (ie, not broken or damaged in some way), they are generally considered safe. It is only when asbestos shingles are in poor condition that they may release airborne asbestos fibers.
Asbestos Shingle Removal
Because an improper asbestos removal job can actually increase the odds of releasing asbestos fibers into the air, you should hire a licensed asbestos abatement specialist to take on the project.
Damaged Asbestos Shingles
If asbestos shingles on your home are damaged, do not allow anyone except a trained professional to access, touch or walk on the roof. Call an asbestos professional as soon as possible to seal off the area and prevent further release of asbestos fibers.
Asbestos roofing materials, including shingles, are usually composed of less than 30 percent asbestos. Asbestos shingles are often made from Transite, a material composed of Portland cement and asbestos, as well as other filler materials.
Long-term Health Effects
Exposure to asbestos, even in small amounts, may lead to lung cancer, chronic obstructive pulmonary disease, pleural plaques, mesothelioma and other forms of cancer. This health risks increase if the person exposed is also a smoker.