Walls and Roofs
Why Your Walls Get Wet: A 'Building Science Made Easy' Guide to Understanding the Dew Point
...Air barriers: stopping the conveyor belt of water
An air leak is like a conveyor belt that fast-tracks warm, humid air into your walls. While a vapor barrier stops moisture from slowly soaking through a solid material, an air leak moves about 100 times more water. If that air hits its dew point while passing through yo...