LISTEN...

Remember: Air always moves from....

Air does many things to and in a building:

• Carries energy (i.e. heat), which can lead to higher energy costs if it is allowed to leak from our buildings.
• Carries moisture, which makes you feel more comfortable but could lead to condensation inside of assemblies.
• Replaces stale with fresh as ventilation systems mix outside air with inside, exhausting stale air out. According to ASHRAE Standard 62.2 (2016) humans need about 15 cubic feet per minute (approx. 26 cubic metres per hour) of fresh air.
• Can carry pollutants from outside to inside (e.g dust, pollen, smoke).

This is why we need Air Barriers and why our building code requires them.