Alternative Roofing Systems, Inc. is a leading certified installer of Duro-Last roofing in Washington. We have done large-scale installations in the Northwest for many companies you know and buildings you’ve likely driven by.

We specialize in Duro-Last Single-Ply PVC Roof Membranes for Commercial, flat, low slope and multi-family complexes.

We are a leading Certified Duro-Last Installer in the PNW and pride ourselves on our average 99% quality inspection rating. Alternative Roofing Systems has served the greater Seattle area for more than 30 years, installing more than 7 million square feet. We truly believe a Duro-Last roof system offers our customers the highest quality and longest life. You can trust your flat, low slope, commercial or multi-family complex roof is in the right hands.

Our mission is simple. “Treat our employees, customers and suppliers as we would family; whilst installing the world’s greatest roof, with the world’s greatest team.”

The areas we service are: Olympia, Tacoma, Everett, Snohomish, Mount Vernon, Mukilteo, Arlington, Marysville, Monroe, Whidbey Island, Woodinville, Lynnwood, Edmonds, Shoreline, Kirkland, Bellevue, Kent, Auburn, Renton, Redmond, Federal Way, Issaquah, Northbend, Seattle, Bellevue, Bellingham, Lynden, Anacortes, and all surrounding islands. Look for our advertisements at the Allenmore, Nile Shrine, and Snohomish golf courses!