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

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58. Subject to section 59, all glazing that separates heated space from unheated space or the outside air shall have a minimum thermal resistance of 0.35 m2 • °C/W.
This section does not apply to a glass swing-type door with or without a sash that opens onto an enclosed vestibule or stairway.
O.C. 89-83, s. 58; O.C. 1211-92, s. 6.