Asbestos Roof Material

The use of asbestos cement roof shingles was growing at a steady rate in the united states.

Asbestos roof material.

Cropp re sawing asbestos roofing felt jun. Asbestos cement roofing is more likely to be a possible problem source of asbestos material if the roof is power washed or mechanically damaged such as by running a power saw through it during demolition or replacement. Asphalt tar paper this is probably the most prevalent acm asbestos containing material found when doing remodels for roofing projects. It is made of a mix of cement and asbestos fibers and as the majority of the materials which contain asbestos it is only dangerous when damaged and in poor condition.

It is black and pretty difficult to remove. Regardless of roof style almost all petroleum based roofing materials once contained deadly asbestos fibers. Manufacturers from about 1940 mid 1970 s used asbestos in the this base material. It was one of the most used types of asbestos containing material for roof building mainly as an underlayment.

Letters and guidance from the applicability determination index that clarify how the asbestos neshap applies to the removal of asbestos containing roofing material. You may need a pdf reader to view some of the files on this page. History of asbestos in roofing roofing materials widely varied as well. 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.