Coal Tar Pitch Roofing

A coal tar roofing system represents the industry s premier built up roof membrane assembly.

Coal tar pitch roofing. History of coal tar roof systems. Coal tar is considered the product of choice for roofs which have ponding water due to its superior ability to withstand extended exposure to water. Coal tar pitch is melted on site in an industrial kettle and applied to the roof as a hot liquid. Both coal tar and coal tar pitch contain many chemical compounds including carcinogens such as benzene.

5x longer life over framing demolition blades when cutting dense and gummy materials. 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. A roofing demolition blade built to cut gummy materials including tar and gravel modified roofing coal tar pitch and more. You may have some success with a coal tar flood coat but you would be better off spudding the gravel and applying the coal tar roofing mastic and 3 course a cotton or fiberglass membrane patch over any identified worn out sections first.

Coal tar pitch membranes using coal tar saturated organic felts is one of the oldest systems listed in table 2. Coal tar pitch roofing is particularly pungent and contains a slew of harmful chemical compounds asphalt roofing is relatively benign compared with pitch. Roofing systems originally consisted of alternate layers of hot bitumen and reinforcement. The traditional coal tar built up roof is one of the most reliable and longest lasting low slope commercial flat roofing systems available.

2 9 coal tar pitch built up roofing. 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. It is used as a base for coatings and paint in roofing and paving and as a binder in asphalt products. Clog free warp free and crack free.

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. 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. Everlasting carbide teeth with wide kerf. It is solid for all practical purposes at room temperature.

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. 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. Asphalt a by product of processing petroleum to make gasoline fuel oil and various hydrocarbon polymers was also popular. Built up roofing in which coal tar pitch forms the waterproofing component of the roof membrane.

These include carcinogens such as benzene and polycyclic aromatic hydrocarbons pahs.