9.7.2.3.Minimum Window Areas

(1) Except as required in Article 9.9.10.1. and Sentence (3), the minimum window glass areas for rooms in buildings of residential occupancy or rooms that are used for sleeping shall conform to Table 9.7.2.3. (2) The unobstructed glass area of a door or skylight is considered equivalent to that of a window. (3) Work areas in live/work units shall conform to Clause 3.7.2.1.(2)(a). (4) Where rooms with different requirements for window glass area are combined as described in Sentence 9.5.1.4.(1), the more restrictive requirement shall govern. Table 9.7.2.3. Glass Areas for Rooms of Residential Occupancy Forming Part of Sentence 9.7.2.3.(1) Minimum Unobstructed Glass Area Minimum Unobstructed Glass Area Location With No Electric Lighting With Electric Lighting Laundry, basement recreation room, unfinished basement 4% of area served Windows not required Water-closet room 0.37 m² Windows not required Kitchen, kitchen space, 10% of area served Windows not required kitchen alcove Living rooms and dining rooms 10% of area served 10% of area served Bedrooms and other finished rooms not mentioned above 5% of area served(1) 5% of area served(1) Notes to Table 9.7.2.3.: (1) See Subsection 9.9.10.