Best Insulation Company Providing Quality Service to the St. Louis and St Charles, Missouri area. Addict Insulation is a family-owned business with 18 years of insulation experience. We want you to be more comfortable in your home or business by making it environmentally friendly and energy efficient. Our insulation installers are all professionals, highly trained and well versed in the knowledge of insulation products and techniques. Specialty Blown-In Insulation, Batting or Fiberglass Insulation, Drill and Fill perfect for older homes, Attic and Basement Insulation and Insulation Removal.