History of coal tar roof systems.
Coal tar pitch roof system.
Coal tar pitch was the roof system of the era and little was known about anything else.
Coal tar pitch is melted on site in an industrial kettle and applied to the roof as a hot liquid.
Construction definition coal tar pitch roofing.
New coal tar pitch roof installations however are extremely rare.
Each roof system was created with the materials available at the time.
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.
Asphalt a by product of processing petroleum to make gasoline fuel oil and various hydrocarbon polymers was also popular.
Roofing systems originally consisted of alternate layers of hot bitumen and reinforcement.
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.
Application tools such as melting kettles mops and mop carts needed to be dedicated to either pitch or asphalt.
For years a coal tar pitch roof was regarded as the best roof system in the market due to the fact that coal tar is impervious to ponding water and the material has a low melting point.
Because of the different properties of asphalt and coal tar pitch roofers were careful not to mix the two materials on the same project.
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.
The traditional coal tar built up roof is one of the most reliable and longest lasting low slope commercial flat roofing systems available.
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.
Hyload has been an innovator in commercial roofing systems since the 1960 s.
In the decades since ctem s inception hyload has added several other roofing products to its offering all of which meet our standard for durability longevity and toughness.
Even though modern roof technology was limited or next to none these roofs in the past sometimes lasted for up to 40 years.
A coal tar roofing system represents the industry s premier built up roof membrane assembly.
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.
It is solid for all practical purposes at room temperature.
Built up roofing in which coal tar pitch forms the waterproofing component of the roof membrane.
