Transite originated as trade name created for a line of asbestos-cement products, including boards and pipes. In time it became something of a generic term for other companies’ similar asbestos-cement products, and later an even more generic term for a hard, fireproof composite material, fiber cement boards, typically used in wall construction.
The use of asbestos to manufacture transite phased out in the 1980s. Previously transite made of cement, used varying amounts (12-50%) of asbestos fiber to provide tensile strength (like the steel in reinforced concrete). It was often used in furnace flues, shingles, siding, and wallboard for areas where fire retardancy is particularly important. Walk-in coolers for large supermarkets, restaurants and butcher shops in the 1960s, 1970s and even the 1980s also used transite. Other uses included roof drain piping, water piping, sanitary sewer drain piping, and HVAC ducts. Because cutting, breaking, and machining asbestos-containing transite releases carcinogenic asbestos fibers into the air, its use has declined. Transite removal and disposal requires the services of an asbestos removal contractor. Contact AADS-LLC for more information.
The following images show examples of Transite use.
U.S. Environmental Protection Agency’s Notification of Rules and Regulations Regarding the Demolition of Asbestos containing Structures published June 8, 2012 provided the following information on handling Transite siding during demolition operations under the Asbestos NESHAP regulation.
The Asbestos NESHAP classifies asbestos-containing cement materials, such as transite, as a Category II nonfriable asbestos-containing cement material such as siding and panels so long as the material cannot be crumbled, pulverized or reduced to powder by hand pressure when it is dry. The Asbestos NESHAP does not require removal of transite and other asbestos-containing cement materials if the material is Category II non friable ACM and the chance is low that the material will become crumbled, pulverized, or reduced to powder during demolition.
However, transite is Regulated Asbestos-Containing Material (RACM) and must be removed before demolition if it has a high chance of becoming crumbled, pulverized, or reduced to powder during demolition or has become crumbled, pulverized, or reduced to powder. A frequent example is when the transite is weathered, damaged, broken or otherwise in poor condition.
In addition, the use of mechanical devices to peel or pull the transite from the building has a high chance of causing the transite to become crumbled, pulverized or reduced to powder, and so the transite siding and pipe must be removed before the machines can demolish the building.
The key point in these requirements is be as careful as possible when removing transite siding and other asbestos-containing cement materials to reduce the potential of creating friable asbestos. Contact AADS-LLC for more information.