Natural Resources Canada's Office of Energy Efficiency offers this guide to educate on basic principles of building science and to provide guidance in home retrofit projects such as insulation and air sealing improvements.

This publication has been divided into 9 separate guides to make it easier to navigate and find relevant information:

Guide Summary And Links

• Introduction
• How your house works
• Materials
• Comprehensive air leakage control
• Roofs and attics
• Basement insulation
• Insulating Walls
• Upgrading windows and doors
• Operating your house

A copy of the publication is also available in a PDF format: Keeping the Heat In [PDF - 9.20 MB].

For more information, visit Keeping The Heat In on the Natural Resources Canada website.