Greenstone Building Products is the exclusive Canadian manufacturer of a Part 4 Insulated Composite Envelope. It combines framing, insulation, vapor barrier and structural engineering into one assembly. The features, advantages and benefits of using Greenstone are as follows:1. No Thermal Bridging - Improved thermal performance - Reduced operating costs 2. Expanded Polystyrene Insulation - 97% Atmospheric Air - Permanent lifetime R-Value 3. Inert Construction Materials - No VOC's - Healthy Air Quality 4. Modular Building Assembly - Reduced site time & waste - Reduced construction costs 5. Extremely Air Tight - No Drafty Areas - Increased comfort 6. Engineered Assembly - Structurally Sound - Peace of MindMany home owners, business owners, contractors, engineers and architects are turning to Greenstone as the codes for construction are continuously getting stricter and the promotion of LEED, Net-Zero, and Passive House certified buildings is becoming common. Our largest product demand is coming from people looking to build healthy, long lasting, high performance buildings across the country.