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ROOFING REQUIREMENTS
ATTIC VENTILATIONEnclosed attics and enclosed rafter spaces formed where ceilings are applied directly to the underside of roof rafters shall have cross ventilation for each separate space by ventilating openings protected against the entrance of rain and snow. The net free ventilating area shall not be less than 1/150 of the area of the space ventilated.
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building@sanramon.ca.gov |