Coal Tar Pitch Roof

Built up roofing in which coal tar pitch forms the waterproofing component of the roof membrane.

Coal tar pitch roof.

However to get the most out of your roof a routine audit is recommended in order to detect problems due to wear and tear abuse or unusual acts of nature. Historically coal tar pitch was used as a component on the first sealed roads has served as a heating element and was used to manufacture paints synthetic dyes and photographic materials. Due to its resistance to ponded water oxidation chemical attack and its cold flow self healing properties coal tar pitch built up roofing systems typically require little maintenance. Construction definition coal tar pitch roofing.

Coal tar pitch roofing is particularly pungent and contains a slew of harmful chemical compounds asphalt roofing is relatively benign compared with pitch. Coal tar s unique molecular structure provides a system that resists water and vapor penetration insect damage chemical attack uv exposure and most elements considered common enemies to other roof membrane systems. Asphalt a by product of processing petroleum to make gasoline fuel oil and various hydrocarbon polymers was also popular. Coal tar pitch is a thick black liquid that remains after the distillation of coal tar.

Coal tar pitch roofing in the processing of coal to make coke for steel making volatile compounds are collected from the coking ovens condensed and separated and become the base of hundreds of raw materials including dyes plastics and a byproduct called coal tar pitch. These systems perform very well historically but are limited to very low slope applications and must be gravel surfaced because of the low viscosity of coal tar pitch at normal rooftop temperatures. Koppers was one brand another one was allied signal. 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.

It is solid for all practical purposes at room temperature. These include carcinogens such as benzene and polycyclic aromatic hydrocarbons pahs. A coal tar roofing system represents the industry s premier built up roof membrane assembly. Roofing systems originally consisted of alternate layers of hot bitumen and reinforcement.

It is used as a base for coatings and paint in roofing and paving and as a binder in asphalt products. You can also get pitch base felt and membrane. Coal tar pitch membranes using coal tar saturated organic felts is one of the oldest systems listed in table 2. A waterproofing material used since the beginning of time coal tar pitch is a superior and sustainable raw material that is ideal for use within a roofing membrane system.

2 9 coal tar pitch built up roofing. Both coal tar and coal tar pitch contain many chemical compounds including carcinogens such as benzene. That make a coal tar based mastic.