INSULATION & ENERGY SYSTEMS, INC. of Wilmington, North Carolina, is pleased to offer a wide variety of insulation options for builders, contractors and homeowners. We service Eastern North Carolina and Northeastern South Carolina.. Residential Home Insulation Commercial Insulation Gas and Wood-Burning Fireplaces Gas Line Installation Vented and Vent-Free Gas Fireplaces Chimney Chase Cover Top Cap Replacements Gas Fireplace Service and Repair Vapor Barrier Installation