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Polyglass Modified Bitumen Roofing Systems
Polygass manufactures membranes of modified bitumen (asphalt), typically combining a polyester, glass fiber or a dual layer of the two reinforcements.  The membranes are formulated by blending selected atactic polypropylene (APP), styrene butadiene styrene (SBS), or thermoplastic polyolefic (TPO) resins, inert fillers, and asphalt.  The modifiers (APP, SBS, TPO) supplement the bitumen’s natural waterproofing qualitites, improving its tensile properties, flexibility and elongation, as well as resistance to UV, heat and fatigue.
Polyester reinforcements usually consist of non-woven mats that withstand high and low temperatures and provide excellent resistance to moisture, puncture and aging.  Furthermore, polyester provides excellent elongation and flexibility properties as well as being easily formed to various configurations.  For more information please visit Polyglass online by clicking on their logo above.
For virtually maintenance-free membrane and an aesthetic finish, Polyglass “Polyflex G”  are available with factory applied granules in a variety of colors, including : white, black, buff, red, brown, green and custom colors (weatherwood and Oak).
Unilay (Single Ply) SBS

Unilay membrane is composed of selected SBS modified bitumen applied onto a non-woven polyester reinforcement with a plastic burn-off on the underside and granulated topside.