Wimsatt Building Materials Corporation is a distributor of quality building products that include residential & commercial roofing, siding, windows & doors, and composite lumber. As Michigan's largest distributor of residential roofing products, we offer a large selection of shingles with over 500 colors and styles in stock. We also offer peerless rooftop delivery backed by a rigorous safety program, will-call order fulfillment, and marketing support materials, for our customers - the contractors, builders, and remodelers of Michigan. The Wimsatt Saginaw story: In August of 1996, Wimsatt opened a fourth location in Saginaw. The branch relocated to a larger facility on Bay Road in 2005. The branch services the thumb area, Flint, Saginaw, Midland, Bay City, and as far north as West Branch and Tawas City.