Roof Material Asbestos

14 1993 pdf 4 pp 134 k.

Roof material asbestos.

Roofing shingles containing asbestos are manufactured from a mix of asbestos fibres and hydraulic cement. Many asbestos roofing materials have been present since the early 20th century. Shingles weren t the only roof product containing asbestos materials. How to identify and safely remove asbestos roofing material acrm asbestos containing roofing material can present certain problems and concerns if discovered.

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. 21 1992 pdf 5 pp 158 k letter to j. In fact most other roofing products produced in the early to mid twentieth century contained asbestos. 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. The primary area of concern is when removing or replacing the covering. They were popular for their rigidity durability and fire resistance. It was a universal solution to roof concerns.

However for the most part simply having this material present on your roof does not equate to a danger. Asbestos roofing materials require the same level of safety attention whatever their form. 15 1991 pdf 3 pp 80 k letter to j. Moran re applicability of the asbestos neshap to asbestos roofing dec.

The use of asbestos cement roof shingles was growing at a steady rate in the united states. Dufour re applicability of the asbestos neshap to asbestos roofing jan.