About Us


MIG’s founder David Williamson established Monroe Insulation and Gutter in 1975 with a vision: to provide the best quality service of insulation solutions and gutter systems to the Rochester building community.

David’s strong work ethic allowed him to build his vision from 3 employers to 50. He has kept the company in the family by turning over the reigns to his two sons, Marc and Randy. Together, David’s sons have expanded MIG’s vision to not only providing insulation and gutter services, but also to closet shelving, fireplaces, and shower doors.

Later, MIG joined forces with Installed Building Products LLC the second largest insulation installer in the U.S. residential new construction market. By becoming part of the IBP family, MIG has access to a top-notch management team always educating its family on national trends, cutting edge technology, and the most innovative building products. MIG is pleased to be able to provide such services to our customers in their home improvement projects.

Although we offer a variety of services, we specialize in home insulation in Rochester and Syracuse, New York. Our team of trusted professionals are experts in their fields. Many of our home remodeling experts have been with MIG for more than 10 years, and we look forward to many more to come.

And now, we are proud to announce that MIG Building Systems is the exclusive Owens Corning™ Certified Energy Expert™ (CEE) contractor for the entire Western New York region. As a CEE contractor, all of our sales consultants and installation professionals are extensively trained and certified by Owens Corning in the latest techniques and products. The program gives us access to advanced offerings, Pink Panther insulation products, building science experts, outstanding warranties, and so much more.

Best of all, all installations of Owens Corning products performed by MIG come with a full 10-year warranty—the first and only warranty of its kind in the industry, fully backed by Owens Corning.

MIG promises to provide quality products and services to all our customers, whether you need:

  • Insulation
  • Gutter guard installation
  • Fireplace installation
  • Closet organizers and new shelving
  • New shower doors

Take a tour of our showroom located at 103 Ontario Street to see our products in person. Here, you can see sample closets, shelving, fireplace options, surrounds & mantels, heavy glass and framed shower doors, and have the opportunity to speak with an MIG home improvement specialist in person about your home remodeling needs.

Read more about our products and services by clicking the link below:

More about MIG Building Systems

group image of the MIG Building Systems team

MIG Management Team:

Marc Williamson
Regional Vice President
Kathy Parsons
Customer Service Manager
Jan Williams
Safety Director
Cindy Jannotti
Billing / Credit Manager
Keith Muller
Rochester Insulation and Gutter Foreman
Wade Bresett
Regional Spray Foam Foreman
Randy Castner
Regional Production Manager
Jeff Anselmo
Syracuse Branch Manager
Guy Grant
Rochester Shelving Shower / Mirror Foreman