Welcome to Interstate Insulation! Interstate Insulation is a full-service insulation company. We are family owned and operated, and we have been serving the Fargo and its surrounding areas since 2007. We specialize in spray foam insulation, but also install fiberglass batts, blown in insulation, injection foam, retro-foam and certain-teed. No job is too big or too small, and we work on both residential insulation and commercial insulation. Call us today to schedule an appointment, and we will have your next project completed efficiently and affordably.