Asbestos Roof Material

Cropp re sawing asbestos roofing felt jun.

Asbestos roof material.

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. Manufacturers from about 1940 mid 1970 s used asbestos in the this base material. 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. Flat roofs often chose tar with gravel stones while pitched roofs used layered asphalt shingles.

The use of asbestos cement roof shingles was growing at a steady rate in the united states. Letters and guidance from the applicability determination index that clarify how the asbestos neshap applies to the removal of asbestos containing roofing material. It is black and pretty difficult to remove. 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 was one of the most used types of asbestos containing material for roof building mainly as an underlayment. See epa s about pdf page to learn more. History of asbestos in roofing roofing materials widely varied as well. Asphalt tar paper this is probably the most prevalent acm asbestos containing material found when doing remodels for roofing projects.