E-1.1, r. 1 - Regulation respecting energy conservation in new buildings

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39. The total area of glazing, including glazing for doors and skylights separating a heated space from an unheated space or the outside air shall not exceed 15% of the floor area.
However, a natural person wishing to have a building constructed for his exclusive use as a residence may require specifications for such building different from those prescribed in this section.
O.C. 89-83, s. 39.