Asbestos particles made asphalt based roofing durable and long lasting.
Was roofing material made of asbestos.
And being a inexpensive material many homes were built with an asbestos roof.
Asbestos is made up of microscopic mineral fibers that when inhaled into the lungs can cause serious respiratory disease and cancer.
The use of asbestos cement roof shingles was growing at a steady rate in the united states.
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That solved structural issues for heavy roof loads.
Letters and guidance from the applicability determination index that clarify how the asbestos neshap applies to the removal of asbestos containing roofing material.
Many tradesmen suffered high levels of toxic exposure when working with asbestos felt in the past and it can lead to serious long term health consequences when it is uncovered in old buildings.
In the 1950s the national gypsum company added corrugated asbestos roofing to its gold bond line of products cementing the building material s popularity with home builders farmers and factory owners alike.
It is mainly important as a roofing material.
Asbestos wouldn t rot rust conduct electricity or react to heat.
Builders commonly used asbestos felt as a floor backing and roofing material during much of the 20th century.
Using asbestos in roofing had many other advantages.
Manufacturers from about 1940 mid 1970 s used asbestos in the this base material.
In the production of cement sheet thin rigid cement is reinforced using asbestos to form cement sheets.
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.
The cement sheet is a building material made from asbestos fibres.
Asphalt tar paper this is probably the most prevalent acm asbestos containing material found when doing remodels for roofing projects.
Back in the early 1940s asbestos was used extensively in homes.
It is black and pretty difficult to remove.
Over the following decades several more companies began manufacturing corrugated sheets and sheathing made from asbestos cement.
Further the cement sheet contains asbestos fibres and cement.
Asbestos is an excellent electrical insulator and is highly heat.
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.
Found as an underlayment for both pitched and flat roofing.
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.
