Coal Tar Pitch Roofing Materials

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 roofing materials. Everlasting carbide teeth with wide kerf. It is used as a base for coatings and paint in roofing and paving and as a binder in asphalt products. Coal tar pitch is a thick black liquid that remains after the distillation of coal tar. 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.

Durapax specializes in coal tar roofing systems built up with multiple layers of coal tar coated glass felts or coal tar organic felts and hot mopped coal tar roofing pitch finished with a coal tar flood coat and gravel. Built up roofing in which coal tar pitch forms the waterproofing component of the roof membrane. 2 9 coal tar pitch built up roofing. The minimum roof slope allowed by code for any type of roof is in 12 applicable only to coal tar pitch roof systems.

Construction definition coal tar pitch 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. Coal tar pitch membranes using coal tar saturated organic felts is one of the oldest systems listed in table 2. An important consideration in tarred flat roof quality is knowing that the common term tar applies to rather different products.

Tar or pitch which is derived from wood resins coal tar asphalt and bitumen. A roofing demolition blade built to cut gummy materials including tar and gravel modified roofing coal tar pitch and more. 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. 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. It is solid for all practical purposes at room temperature. The following table provides the minimum required allowable roof slope for each type of roofing material mentioned in the code. 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. Its superior resistance to ponding water eliminates the costly use of tapered insulation.