Facilities Founded in 1963, Seamless Gutter Products is a family owned manufacturer of high quality, innovative gutter products and gutter accessories. We currently run production out of three facilities in the Chicago area. The Lombard plant, in operation since 1963, is a tool & die and stamping plant. The Palatine facility, built in 1990, is a roll-forming and stamping plant. The Addison plant, bought in 2000, is also a roll-forming and stamping plant, and houses the main offices as well. At Seamless Gutter Products, we take pride in supplying our customers with quality, state of the art gutter products, manufactured using cutting-edge processes. Our tooling and dies are made in-house by our own experienced staff of tool and die makers. We also use advanced, high-speed roll-forming machinery to manufacture consistently high-quality products. Many of these machines were custom built to our own specifications.