"Based on a survey of peer‐reviewed research and trade journals, interviews with a wide range of professionals who work with mechanical insulation and energy modeling of three different building types, we have identified actions that can be taken by the provincial government, utility companies, local government, developers, engineers and building owners/operators that can save millions of dollars and eliminate thousands of tonnes of greenhouse gas emissions each year." The paper provides a literature review and makes recommendations for policy changes at provincial and local levels.