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

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40. A door separating a heated space from the outside air shall be protected by a storm door, unless, except for its glazed part, it has an average thermal resistance of at least 0.7 m2 • °C/W: for unless it opens onto an enclosed unheated vestibule.
O.C. 89-83, s. 40.