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American Wood Council

What is the "vented airspace"?


The "vented airspace" refers to spaces which have the ability to move air from the space that will be vented to the outside. This is a common practice in attics where the building codes require that the space be "vented" and they specify the amount of air movement by a percentage of the ceiling area (1/150 or 1/300 depending on the vapor barrier). 

For more information, see WCD #6 - Design of Wood Frame Structures for Permanence.Download free here.

 
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