Asbestos cement was first developed in 1905 by the johns manville company who became one of the premier manufacturers of cement asbestos materials.
Asbestos siding first used.
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In theophrastus on stones from around 300 bc there is a reference to a material that is thought to be asbestos.
It was used extensively in construction projects until the 1970s when it was banned owing to the health dangers it posed.
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Theophrastus was successor to aristotle in the peripatetic school in greece.
China glaze was a trademarked name for a cement asbestos siding shingle filed by u s.
Asbestos was first used in the 1930s because when mixed into building materials it offered flame resistance increased strength and insulation.
From 1930 to 1980 asbestos was used in a number of property building.
Evidence found near the lake juojärvi finland shows that people used it to make pots and other cooking utensils.
Gary a reasonable guess for the start of widespread use of asbestos cement siding in the u s.
Asbestos siding was made by adding asbestos a naturally occurring mineral to portland cement.
Our research found that the term china glaze siding was first used in february 1957.
Would be 1920 but patent disclosures and other research make clear that such products were in development and use one or two decades earlier.
Asbestos siding was very commonly used in buildings and homes from around the 1920s until the 1980s and can still be found in many older homes in the u s.
Siding material and other products using asbestos reinforced concrete continued to be sold and installed well into the early 1970s since it was believed that the process of making asbestos cement somehow neutralized the asbestos fibers.
I recommend having a certified asbestos removal contractor take the existing asbestos siding off though in many areas homeowners are allowed remove asbestos siding themselves if they follow proper precautions.
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However removing the asbestos siding first though more expensive is the best alternative in the long run.
Asbestos is a mineral fiber that in the past was used as a flame retardant strengthening agent that provided heat insulation.
