Fundamentals of Air Sealing


Air sealing is about creating barriers. Keeping air and moisture in their place means that you keep heat in it’s place. That means creating barriers for air, vapor, and water. To do it right, you have to know what each one does, and which one goes where. It’s a bit tricky, but you’ll get it.

Air sealing is full of all sorts of fun and mental challenges especially in renovation projects throughout Canada and the US! 

After completing this module you will be able to:
  • Explain the purpose of air sealing
  • Distinguish between different types of barriers
  • Describe common approaches to air sealing
  • List materials commonly used for air sealing