The Single Measure Attic Insulation Program is designed to help homeowners improve energy efficiency, comfort, and cost savings—without the need for a full home retrofit. GWC Insulation is Peterborough and Ontario's trusted spray foam insulation contractor, offering residential, commercial, and industrial insulation services that are both cost-effective and eco-friendly. As certified spray foam contractors with 17 years of experience behind us, we specialize in energy-efficient insulation services for Peterborough and nearby locations.