Publications and Reports | CMHC

Energy Efficiency Building Envelope Retrofits
Exterior Retrofit for 1960s and 1970s Two-Storey Houses
>75% Space Heating Energy Savings
67791

This publication describes the starting point (what you have now), air-sealing and insulation options to achieve the targeted energy savings, technical considerations to keep in mind in the planning of the retrofit project, and general precautions.