Coal tar

A dark brown to black cementitious material produced by the destructive distillation of coal.
Coal-tar pitch is further refined to conform to the following roofing grade specifications:
Coal-tar pitch: A coal tar used as the waterproofing agent in dead-level or low-slope built-up roof membranes and membrane waterproofing systems, conforming to ASTM D450, Type I.

Coal-tar waterproofing pitch: A coal tar used as the dampproofing or waterproofing agent in below-grade structures, conforming to ASTM D450, Type II.

coal-tar roof cement: A trowelable mixture of processed coal-tar base, solvents, mineral fillers and/or fibers; classified by ASTM D5643, Coal Tar Roof Cement, Asbestos Free.

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