RoJohns was established in 1937 by Cecil RoJohn. The company was called RoJohn Insulation Company and focused on insulating the sidewalls and attics of residential buildings.Today the company offers a full range of remodeling services for both residential and commercial buildings. The service territory is Fort Dodge, IA and the surrounding area for remodeling. The roofing crews service all of Iowa and parts of Missouri and Minnesota. We have been in the energy conservation business for over 70 years, and are one of the leaders of green building techniques in our area.