Do Asphalt Siding Shingles Contain Asbestos. 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. Testing your siding for asbestos.
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. Roof shingles even if the material contained asbestos which it might are rarely the only nor even the principal source of problem levels of asbestos fibers in a building and i.
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. If your siding fits either of these descriptions you should consider having it tested. The siding may also contain asbestos if it is old with a wood grain texture to resemble cedar. An asphalt shingle recycler in maine see case study tested 118 samples.
