Attic Ventilation in Accessory Structures

The 2015 International Residential Code and International Building Code, published by the International Code Council, include requirements for attic ventilation to help manage temperature and moisture that could accumulate in attic spaces. Although the code requirements are understood to apply to habitable buildings, not everyone understandes how the code addresses accessory structures, like workshops, storage buildings, detached garages and other buildings. What's the answer? The code treats all attic spaces the same, whether the space below the attic is conditioned or not...

 

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