Do Asphalt Siding Shingles Contain Asbestos

Nonfriable means they cannot be broken up by hand pressure.

Do asphalt siding shingles contain asbestos.

If your siding fits either of these descriptions you should consider having it tested. An asphalt shingle recycler in maine see case study tested 118 samples. However asbestos fibers can cause serious lung and respiratory problems if inhaled. Testing your siding for asbestos.

An asphalt shingle recycler in massachusetts tested incoming asphalt shingles on a per load basis. The use of asbestos cement roof shingles was growing at a steady rate in the united states. In the early 1920s american roofing material manufacturers johns mansville carey eternit and century were all offering at least one asbestos cement roofing shingle to their customers. Representative composite samples were collected on a per incoming load basis and analyzed using plm.

Shingles placed on a roof before the mid 1980s might contain asbestos. Some asphalt roof shingle products and therefore quite possibly some asphalt siding products did indeed contain asbestos fibers in their substrate or coating. It is virtually impossible for anyone but a trained professional with a high powered microscope to tell definitively whether a shingle contains asbestos. The siding may also contain asbestos if it is old with a wood grain texture to resemble cedar.

Asphalt or cement roofing and siding that contain asbestos when intact and in good condition are generally considered nonfriable and are not hazardous.