Because of the different properties of asphalt and coal tar pitch roofers were careful not to mix the two materials on the same project.
Pitch tar roof.
Coal tar is an aromatic hydrocarbon and a by product from the coking process of the coal industry.
Bituminous roofing hits the market back in the pre world war ii years there were two bituminous substances bitumens that dominated the roofing industry.
Coal tar pitch built up roof.
Coal tar pitch is produced by distilling or heat treating coal tar which is a by product of the production of coke or coal gas.
If you have a home with a flat roof a tar and gravel roof may be a good option for you.
Tar and gravel roofing.
Tar and gravel roofs sometimes referred to as conventional built up roofing or bur roofs tar and gravel roofing is a system of flat roofing protection that is budget friendly and can have a lifespan of up to 30 years.
Coal tar pitch was a by product of processing coal to make coke which in turn was used in making carbon steel and electrodes for the aluminum industry.
Both coal tar and coal tar pitch contain many chemical compounds including carcinogens such as benzene.
Application tools such as melting kettles mops and mop carts needed to be dedicated to either pitch or asphalt.
Coal tar pitch roofing is a type of built up roofing in which coal tar pitch forms the waterproofing component of the roof membrane.
It is historically in abundance where coal is used in steel manufacturing.
Although it is technically a fluid it is extremely viscous and.
It ages very slowly through volatilization and is an excellent waterproofing and oil resistant product.