The U.S. Department of Energy's number one recommendation for reducing monthly energy bills is adding insulation - to attic spaces, ceilings, interior walls and crawl spaces.St Louis Insulationis a family owned and operated full service weatherization and insulation contractor proudly serving the entire Metropolitan St Louis area with locations in South County, Saint Peters, Belleville and Edwardsville.St. Louis Insulation&rsquohighly trained staff of experienced professionals are passionate about helping home owners save thousands of dollars over the life of their home through the installation of high-quality residential home insulation.