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

Section 74 Disposition versions

2012-09-01

74. Except for doors, windows, skylights and other closures, the thermal resistance of each building component, not taking into account framing or furring, situated in a municipality in one of the zones mentioned in Schedule 2 shall comply with the values prescribed in the table below for that zone.

A building situated elsewhere than in a municipality listed in Schedule 2 is included in the same zone as the nearest municipality mentioned. If there is more than one municipality situated equidistant from the municipality where the building is located, it is included in the zone of the municipality with the most stringent requirements.

This section does not apply to those parts of building enclosures made with materials designed to collect and store solar energy, on the condition that their use does not increase the building energy requirements during winter compared with building components built in conformity with the requirements of this section.

Table

(s. 74)

Minimum thermal Assembly (Rt), m2 • °C/W

Building assembly                                                Zones

                                                        A    B    C    D    E    F

Wall assemblies above ground level (other than 
foundation walls) separating heated space from 
unheated space or the outside air:

(1) for a wall of any type other than that 
    specified in (2):                                  2.8  3.0  3.2  3.5  3.8  4.1

(2) for a concrete or masonry wall insulated 
    with rigid material on the outside only:           2.4  2.6  2.8  3.0  3.2  3.5

Foundation wall assemblies separating heated 
space from unheated space, outside air or
adjacent earth:                                        2.2  2.2  2.2  2.2  2.2  2.2

Roof, ceiling or floor assemblies separating 
heated space from unheated space or the exterior:

(1) for any assembly other than those 
    specified in (2):

— roof or ceiling:                                     4.4  4.8  5.1  5.5  6.0  6.4
— floor:                                               4.4  4.7  4.7  4.7  4.7  4.7

(2) for a floor, roof or ceiling assembly of
    massive wood panelling at least 38 mm thick, 
    or of steel or concrete slabs, and insulated 
    with rigid material only:                          2.4  2.6  2.8  3.0  3.2  3.5

Perimeter of slab-on-ground floors less than 
600 mm below adjacent ground level:

(1) where heating ducts, pipes or resistance 
    wiring are embedded in or beneath the slabs:       1.2  1.3  1.5  1.7  1.9  2.1

(2) slab-on-ground floors other than those 
    described in (1):                                  0.8  0.8  1.0  1.3  1.5  1.7

O.C. 89-83, s. 74; O.C. 1721-85, s. 12.