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Welcome To GAG Sheet Metal Inc

Gag Sheet Metal, Inc. is a family owned company located in New Ulm, Minnesota. The company was founded in 1904 by George Gag, and carried on by his son, Melvin Gag. Mel’s son Michael Gag became an owner in 1978. In the Mid 1980’s, his son John Gag joined him, and in the early 1990’s, Mike’s son Steven Gag joined the company.

John and Steve are the current owners and head up the management team. In 2006, we merged our two southern Minnesota offices, moving into a larger building with remodeled offices and building a new shop and warehouse in New Ulm.

We install all types of roofing, specializing in Flat roofing and Architectural Panels. Our HVAC side of the business works with all types of ventilation, as well as commercial kitchens, and in-floor heat.


Recently we were awarded the honor of being Southern Minnesota's first Bryant Factory Authorized Dealer; only the 2nd business awarded in the state of Minnesota. A company must hold true to the Bryant name and beliefs to have this honor, including having employees pass written tests on knowledge, and guaranteeing 100% satisfaction on every installation. We have also received the Bryant Medal of Excellence in 2007 and 2008, earning elite status as one of the top 15 Bryant dealers in the Country.

We have also received many other awards, including Roofing Excellence.