About

Northern Industrial Insulation is committed to the total success of your commercial and industrial insulation projects. 

Since 1983, customers have trusted NII to perform high-quality, reliable insulation services throughout the Midwest, operating on both new and retrofit projects. 

Northern Industrial Insulation contracts all types of pipe, boiler, duct, and equipment insulation. NII maintains a large stock of thermal insulation and accessories for distribution to industrial, commercial, and contractor accounts.