Cullen Insulation
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Cullen Insulation
Cullen Insulation is dedicated to quality from start to finish, so you have nothing to worry about when it comes to your residential or commercial project. Our five locations provide fiberglass, spray foam, rigid foam, waterproofing and air barrier expertise to a large service area that reaches North Dakota, South Dakota, Minnesota, Northwest Iowa and Eastern Montana.

Along with homes, we bring energy-saving solutions to a variety of structures-including schools, hospitals, multifamily units, government buildings and more. To ensure excellence, we use products from trusted manufacturers like Owens Corning and BASF. We appreciate high expectations and work hard to fulfill our reputation for quality with each project.
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Cullen Insulation is a local insulation installer, building science expert and energy performance consultant. We built our business on the simple, honest qualities that add up to total customer satisfaction. Cullen Insulation started in 1988 with $700 to buy a used pick-up truck. Through skillfulness, attention to detail, and pride in workmanship, we have expanded to four locations, more than 60 team members, and over 40 vehicles.
Our company originated in the Red River Valley and has branched out to serve the commercial and residential insulation needs of much of North Dakota, South Dakota, Minnesota, Northwest Iowa, and Eastern Montana. With locations in Fargo-Moorhead, Grand Forks, Bismarck and Sioux Falls, we can be where you need when you need us.
Cullen Insulation has been certified by Owens Corning Insulating Systems, the leading name in fiberglass insulation, to provide customers with an outstanding combination of energy expertise and assurance. As an Owens Corning Certified Energy Expert professional, we work with builders and homeowners alike to help make buildings and homes quiet, comfortable and energy smart.
When it comes to getting a job done right and on time, Cullen is the region's go-to local commercial insulation contractor. Our four branches provide energy-saving solutions for a variety of commercial structures, including educational facilities, hospitals, multi-family units, government buildings and retail spaces.
Air barriers are an effective way to control the air leakage in a space. Air barriers tightly seal the building envelope, allowing for an overall more energy efficient space. At Cullen Insulation, we install a full range of fluid-applied and self-adhered air barrier products for a variety of commercial structures, including multi-family units, hospitals, government buildings and school facilities.
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