Resources Nelson Insulation is affiliated with the following material manufacturers and organizations whose mission is to promote excellence and environmental responsibility in building insulation. Local #17 Heat and Frost Insulators National Insulation Association (NIA) Illinois Regional Insulation Contractors Association (IRICA) Midwest Insulation Contractors Association (MICA) North America Insulation Manufacturers Association (NAIMA) Insulation Contractors Association of America (ICAA) Firestop Contractors International Association (FCIA) International Firestop Council (IFC) Specialty Products and Insulation Co. |