Alternative Roofing Systems Inc.

Seattle commercial roofing contractor with over one million square feet of roofing installed by our team of professional roofers serving Bellevue, Kent, Tacoma and the Puget Sound areas.

  • Cool Zone Roofing System

    Duro-Last Cool Zone roofing system has set the standard for single-ply roof reflectivity and the resulting energy savings. Terms like sustainability, cool … Read More

  • Duro-Last, the World’s Best Roofing

    Custom fabricated roofing ideal for any flat or low-slopped roof. Extremely durable, and installed without disruption your building's operations. The Duro-Last … Read More

  • Smaller Commercial Buildings

    Small commercial building owners choose Duro-Last roofing installed by Alternative Roofing Systems. The prefabricated roofing system ensures a perfect roofing … Read More

  • Roofing for Commercial / Retail

    Commercial and retail building owners measure the true costs of a roofing system over the lifetime of the roof. This includes energy savings, maintenance and … Read More

  • The World’s Best Roofing Installed

    This large retirement home was roofed with Duro-Last roofing. Many building owners choose Duro-Last because of the economics, endurance, energy savings and the … Read More

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About Alternative Roofing

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Alternative Roofing Systems, Inc. is the number one installer of Duro-Last roofing in Washington. We have done large-scale installations in the Northwest for many … read more

Building Owners

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Since 1978, Duro-Last has manufactured a custom-prefabricated, reinforced, thermoplastic single-ply roofing system that is ideal for any commercial roofing … read more

Architects

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Architects, consultants, and other specifiers choose Duro-Last because our prefabricated roofing system has technology built-in - manufacturing science that ensures a … read more