GreenLight Inspections

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Understanding Attic Ventilation and building code

I had a question the other day from a friend about building code and attic ventilation. I sent him a particularly long explanation that I thought might be useful to others. So here it is: IRC 806.2 says that 1/150th of the attic is the required ventilation…. except that in Climate zone 6, 7, or 8 […]