• Photo of Steep-Slope Roof Coverings

    Steep-Slope Roof Coverings

    These differ from low-slope roof coverings in that on steep-slope roofs water flows rapidly over exposed units to eaves. Many of…

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  • Asphalt Mastics and Grouts

    Asphalt mastics used for waterproofing floors and similar structures, but not intended for pavement, consist of mixtures of asphalt cement, mineral…

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  • Asphalt Shingles

    There are three standard types: Type I, uniform or nonuniform thickness; Type II, thick butt; and Type III, uniform or nonuniform…

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  • Photo of Bitumen


    Ashalt, bitumen and tar are referred as bituminous materials, which are essentially hydrocarbon materials. The asphalt is a mixture of inert…

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