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Ventilation of Attic Spaces.

Milwaukee Code of Ordinances § 257-10
in effect
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257-10. Ventilation of Attic Spaces. Attic spaces and spaces between roofs and top floor ceilings shall be provided with openings to effectuate cross-ventilation in these areas. Said openings shall be protected against entrance of snow, rain, insects and birds. The free vent area shall be one three-hundredths of the ceiling area. In attics 50% of the ventilating area is to be located in the upper portion of the space to be vented and with the balance of the required ventilation area provided in the eave or cornice. Spaces between roofs and top floor ceilings shall be provided with openings to effectuate cross-ventilation in these areas.
Source: City of Milwaukee Legislative Reference Bureau, Milwaukee City Charter and Code of Ordinances (city.milwaukee.gov master PDFs)URL: https://city.milwaukee.gov/ImageLibrary/Groups/ccClerk/Ordinances/Volume-2/CH257.pdf#page=2Fetched: 10/26/2026

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257-10 | Corpus