Specification

4
6
7
6
4
5
5
3
2
2
2
3
US Department of Energy (DOE) R-Value Recommendation
Provincial Building Code Requirements for Canada
Province Zone Heating Type Ceiling
Exterior
Walls
Exposed
Floors
Basement
Walls
Foundation
Depth bg
Crawl
Space
Attic R-Value Joist R-Value R-Value R-Value R-Value ft R-Value
BC
=3500DD
gas 40 28 20 28 12 2 20
BC electric/oil 40 28 20 28 12 2 20
BC
4500DD
all 44 28 20 28 12 2 20
BC
=4500DD
all 52 28 22 28 12 2 22
AB* 9.25.2.1 R34 R34 R12 R20 8 R8
SK National Building Code of Canada**
MB
53 degrees Lat
gas 40 28 20 32 12 2
MB electric/oil 40 28 20 32 12 2
MB
53 degrees Lat
all 50 28 26 32 24 2
ON 1 gas/oil 40 28 19 25 12 full height
(
5000DD)
electric 50 28 29 25 19 full height
2 gas/oil 40 28 24 25 12 full height
(
5000DD)
electric 50 28 29 25 19 full height
QC A all*** 30 30 19 27 12 full height 12
B all*** 32 32 20 27 19 full height 12
C all*** 34 22 27 12 full height 12
D all*** 36 23 27 12 full height 12
E all*** 39 24 27 12 full height 12
F all*** 40 26 27 12 full height 12
NS All 40 31 24 31 20 20
PEI, NF, NB
YT. NWT,NU
All National Building Code of Canada**
Insulation levels are nominal R-values, not effective values for assembles. *In AB, highrise construction follows the National Building Code of Canada.
**National Building Code of Canada has no specific insulation requirements except that insulation be used to prevent condensation. The National Building Code does not
recommend using the Model National Energy Code for Houses (MNECH). Provinces using the National Building Code usually impose some non energy related, modifications.
***Quebec Total assembly R-value requirements between framing members. Model National Energy Code for Buildings scheduled upgrade for expected release 2011.
Zone Heating System Attic
Cathedral
Ceiling
Wall:
Cavity
Wall:
Insulation
Sheathing Floor
1 All R30 to R49 R22 to R15 R13 to R15 None R13
2 Gas, oil, heat pump R30 to R60 R22 to R38 R13 to R15 None R13
2 Electric furnace R30 to R60 R22 to R38 R13 to R15 None R19-R25
3 Gas, oil, heat pump R30 to R60 R22 to R38 R13 to R15 None R25
3 Electric furnace R30 to R60 R22 to R38 R13 to R15 R2.5 to R5 R25
4 Gas, oil, heat pump R38 to R60 R30 to R38 R13 to R15 R2.5 to R6 R25 to R30
4 Electric furnace R38 to R60 R30 to R38 R13 to R15 R5 to R6 R25 to R30
5 Gas, oil, heat pump R38 to R60 R30 to R38 R13 to R15 R2.5 to R6 R25 to R30
5 Electric furnace R38 to R60 R30 to R60 R13 to R21 R5 to R6 R25 to R30
6 All R49 to R60 R30 to R60 R13 to R21 R5 to R6 R25 to R30
7 All R49 to R60 R30 to R60 R13 to R21 R5 to R6 R25 to R30
8 All R49 to R60 R30 to R60 R13 to R21 R5 to R6 R25 to R30
All of Alaska in Zone 7 except for the following Boroughs in
Zone 8: Bethel, Dellingham, Fairbanks N. Star, Nome, North
Slope, Northwest Arctic, Southeast Fairbanks, Wade Hampton,
Yukon-Koyukuk
Zone 1 Includes: Hawaii, Guam, Puerto Rico, and the
Virgin Islands
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