Water Vapor
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Cold-Climate Vapor Control
Contrary to the American IRC, the Canadian NBC allows only one method of vapor management to be used in a residential building
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The BS* + Beer Show: Choosing and Using Water-Resistive Barriers
Many of today's WRBs can do more than keep water out of your walls, so there's much more to consider than cost and installation details
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Controlling Humidity in Winter
Hint: Airtight homes usually don’t have a problem with dry air
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Is It Possible to Get Condensation on a Sponge?
A little building science puzzler on moisture and the properties of materials
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Fundamentals of Psychrometrics, Part 3
Putting the quantities together in the chart
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All About Vapor Diffusion
Even if a material has no holes, water can often move right through it
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Fundamentals of Psychrometrics, Part 2
The quantites, both preferred and discouraged, and how they relate to the chart
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Outward Vapor Diffusion
Airtight wall and roof assemblies must accound for outward wintertime vapor diffusion to prevent moisture accumulation problems
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The Physics of Water in Porous Materials
Water has unique properties that govern its interaction with wood and other construction materials
