The IRC requires all habitable rooms to have a glazing area equal to ____ of the room's floor area and that half of the area used to provide light also be openable to provide ventilation.

Question

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The International Residential Code (IRC) requires that all habitable rooms have a glazing area of not less than 8% of the floor area of the room to provide natural light. Additionally, it requires that at least half of the glazing area used to provide natural light must be openable to provide natural ventilation, unless other approved means of ventilation are provided.

The IRC Requires All Habitable Rooms to Have a Glazing