ontario’s building code

Building and Development Branch © Copyright Queen's Printer for Ontario 2011 Issued January 2011 of 26

Ministry of Municipal Affairs and Housing

Ontario’s Building CodeONTARIO ONLY PROPOSED CHANGE TO THE 2006 BUILDING CODE

CHANGE NUMBER E-SB-12-02-01 CODE REFERENCESupplementaryStandard SB-122.1.1.1. to 2.1.1.3.

DESCRIPTION OF PROPOSED AMENDMENT

Provide prescriptive increased energy efficiency solutions for residentialbuildings governed by Part 9 after December 31, 2016. This proposal includes,for consideration, options for increasing energy efficiency by 10%, 15% and20% above requirements that are already scheduled to take effect after December31, 2011.

EXISTING 2006 BUILDING CODE PROVISION(S)

Chapter 2

Acceptable Solutions for Energy Efficiency Compliance

Section 2.1. Methods for Achieving Energy Efficiency Compliance

2.1.1. Prescriptive Compliance Packages (See Appendix A.)

2.1.1.1. Energy Efficiency

(1) Except as permitted in Articles 2.1.1.5., 2.1.1.6., 2.1.1.8., 2.1.1.9. and 2.1.1.10., the minimum thermal performanceand energy efficiency of building envelope and space heating equipment, domestic hot water heating equipment and heatrecovery ventilators equipment shall conform to

(a) Article 2.1.1.2. if the building is located in Zone 1 with less than 5000 heating degree days, or(b) Article 2.1.1.3. if the building is located in Zone 2 with 5000 or more heating degree days.

(2) All walls, ceilings, floors, windows and doors that separate heated space from unheated space, the exterior air or theexterior soil shall have thermal resistance ratings conforming to this Subsection.

(3) Where specified in compliance packages in Tables 2.1.1.2.A, 2.1.1.2.B and 2.1.1.2.C and Tables 2.1.1.3.A, 2.1.1.3.Band 2.1.1.3.C, space heating equipment, domestic hot water heating equipment and heat recovery ventilators shall have theefficiency rating conforming to this Subsection. (See Appendix A.)

(4) Insulation shall be provided between heated and unheated spaces and between heated spaces and the exterior inaccordance with this Chapter.

(5) Reflective surfaces of insulating materials shall not be considered in calculating the thermal resistance of buildingassemblies.

(6) Where glass block is used in a wall, the required minimum overall performance of the building envelope shall bemaintained by increasing thermal performance of other components sufficient to compensate for the additional heat lossthrough the glass block.


(7) Except as provided in Sentence (8) and except as permitted in Sentence (9), where the ratio of the gross area of windows,sidelights, skylights, glazing in doors and sliding glass doors to the gross area of peripheral walls measured from grade to thetop of the upper most ceiling is not more than 17%, the building shall comply with a compliance package selected from Tables2.1.1.2.A, 2.1.1.2.B and 2.1.1.2.C and Tables 2.1.1.3.A, 2.1.1.3.B and 2.1.1.3.C.

(8) Except as permitted in Sentences (9) and 2.1.1.10.(4), where the ratio of the gross area of windows, sidelights, skylights,glazing in doors and sliding glass doors to the gross area of peripheral walls measured from grade to the top of the upper mostceiling is more than 17% but not more than 22%, the building shall comply with a compliance package selected from Tables2.1.1.2.A, 2.1.1.2.B and 2.1.1.2.C and Tables 2.1.1.3.A, 2.1.1.3.B and 2.1.1.3.C, and the overall coefficient of heat transferof the glazing shall be upgraded to

(a) 1.8 where the selected compliance package requires 2.0,(b) 1.6 where the selected compliance package requires 1.8, and(c) 1.4 where the selected compliance package requires 1.6.

(9) Glazing in main entrance doors and adjacent sidelights to main entrance doors need not be calculated for the purposes ofSentences (7) and (8).

(10) Except as provided in Sentence (9), where the ratio of gross area of windows, sidelights, skylights, glazing in doors andsliding glass doors to the gross area of exterior walls measured from grade to the top of the upper most ceiling is more than22%, the building shall comply with Subsection 2.1.2.

(11) Where a dwelling unit has a walkout basement, basement walls separating indoor spaces from outdoor spaces shall have athermal performance level equal to that of the above grade walls.

(12) The minimum thermal resistance of insulation shall conform to the applicable values specified in Articles 2.1.1.2. and2.1.1.3.

(13) The minimum annual fuel utilization efficiency of a furnace serving a building of residential occupancy shall conform toTable 2.1.1.1.A.

(14) Where space heating is supplied by a solid fuel-burning appliance or an earth energy system, the compliance package ispermitted to comply with Tables 2.1.1.2.A. and 2.1.1.3.A.

Table 2.1.1.1.A.Furnace Minimum Annual Fuel Utilization Efficiency

Forming Part of Sentence 2.1.1.1.(13)

Furnace Fuel Source Minimum AFUENatural gas 90%

Propane 90%Oil (1)

Column 1 2Note to Table 2.1.1.1.A.:(1) Minimum efficiency regulated by Green Energy Act, 2009.

2.1.1.2. Energy Efficiency for Zone 1 Buildings

(1) Except as required in Sentences (2) to (4), the minimum thermal performance of building envelope and equipment shallconform to Table 2.1.1.2.A.


Table 2.1.1.2.AZONE 1 - Compliance Packages for Space Heating Equipment with AFUE $90%


ComponentCompliance Package

A B C D E F G H I J K(4) L(5) M(6)

Ceiling with Attic SpaceMinimum RSI (R)-Value(1)

8.81(R50)

8.81(R50)

8.81(R50)

8.81(R50)

8.81(R50)

8.81(R50)

8.81(R50)

8.81(R50)

8.81(R50)

8.81(R50)

8.81(R50)

8.81(R50)

8.81(R50)

Ceiling Without Attic SpaceMinimum RSI (R)-Value(1)

5.46(R31)

5.46(R31)

5.46(R31)

5.46(R31)

5.46(R31)

5.46(R31)

5.46(R31)

5.46(R31)

5.46(R31)

5.46(R31)

5.46(R31)

5.46(R31)

5.46(R31)

Exposed FloorMinimum RSI (R)-Value(1)

5.46(R31)

5.46(R31)

5.46(R31)

5.46(R31)

5.46(R31)

5.46(R31)

5.46(R31)

5.46(R31)

5.46(R31)

5.46(R31)

5.46(R31)

5.46(R31)

5.46(R31)

Walls Above GradeMinimum RSI (R)-Value(1)

4.23(R24)

4.75(R27)

4.75(R27)

4.23(R24)

4.23(R24)

4.23(R24)

4.23(R24)

4.23(R24)

3.87(R22)

3.87(R22)

3.87(R22)

4.23(R24)

4.23(R24)

Basement WallsMinimum RSI (R)-Value(1)

3.52(R20)

3.52(R20)

3.52(R20)

3.52(R20)

3.52(R20)

2.11(R12)

2.11(R12)

2.11(R12)

3.52(R20)

2.11(R12)

3.87(R22)

3.87(R22)

3.52(R20)

Below Grade SlabEntire surface > 600 mmbelow gradeMinimum RSI (R)-Value(1)

0.88(R5) - - - - - - - - - - - -

Edge of Below Grade Slab #600 mm Below GradeMinimum RSI (R)-Value(1)

1.76(R10)

1.76(R10)

1.76(R10)

1.76(R10)

1.76(R10)

1.76(R10)

1.76(R10)

1.76(R10)

1.76(R10)

1.76(R10)

1.76(R10)

1.76(R10)

1.76(R10)

Heated Slab or Slab # 600 mm below gradeMinimum RSI (R)-Value(1)

1.76(R10)

1.76(R10)

1.76(R10)

1.76(R10)

1.76(R10)

1.76(R10)

1.76(R10)

1.76(R10)

1.76(R10)

1.76(R10)

1.76(R10)

1.76(R10)

1.76(R10)

Windows and Sliding GlassDoorsMaximum U-Value(2)

1.6 1.6 1.8 1.8 1.8 1.8 1.8 2 1.8 1.8 1.8 1.8 1.8

Skylights Maximum U-Value(2) 2.8 2.8 2.8 2.8 2.8 2.8 2.8 2.8 2.8 2.8 2.8 2.8 2.8

Space Heating EquipmentMinimum AFUE 90% 90% 94% 94% 90% 94% 92% 94% 92% 94% 90% 94% 90%

HRV Minimum Efficiency - - - - 55% 60% 60% 70% 55% 60% - - -

Domestic Hot Water Heater Minimum EF 0.57(3) 0.57(3) 0.62 0.67 0.57(3) 0.57(3) 0.62 0.67 0.62 0.67 0.57(3) 0.57(3) 0.8

Column 1 2 3 4 5 6 7 8 9 10 11 12 13 14

Notes to Table 2.1.1.2.A.:(1) The values listed are minimum RSI-Values for the thermal insulation component only. RSI-Values expressed in (m²" K)/W. (2) U-Value is the overall coefficient of heat transfer expressed in W/(m²" K).(3) Minimum efficiency regulated by Green Energy Act, 2009.(4) Applies to a building with both ICF basement walls and ICF above grade walls where the thermal insulation value is the sum of the

insulation value on both sides of the walls.(5) Applies to a building with ICF basement walls only where the thermal insulation value is the sum of the insulation value on both sides of

the walls.(6) Applies to a building with combined space heating and domestic hot water heating system.


(2) Except for solid fuel-burning space-heating equipment and natural gas and propane furnaces, where the space heatingequipment efficiency ranges from 78% to less than 90%, the minimum thermal performance of the building envelope andequipment shall conform to Table 2.1.1.2.B.

Table 2.1.1.2.BZONE 1 - Compliance Packages for Space Heating Equipment with AFUE $ 78 % and < 90%



A B C D E FCeiling with Attic SpaceMinimum RSI (R)-Value(1)

8.81(R50)

8.81(R50)

8.81(R50)

8.81(R50)

8.81(R50)

8.81(R50)


5.46(R31)

5.46(R31)

5.46(R31)

5.46(R31)

5.46(R31)

5.46(R31)


5.46(R31)

5.46(R31)

5.46(R31)

5.46(R31)

5.46(R31)

5.46(R31)


5.11(R29)

5.11(R29)

5.11(R29)

4.75(R27)

4.75(R27)

4.75(R27)


3.52(R20)

2.11(R12)

3.52(R20)

3.52(R20)

3.52(R20)

3.52(R20)

Below Grade SlabEntire surface > 600 mm below gradeMinimum RSI (R)-Value(1)

- - - - - -

Edge of Below Grade Slab # 600 mmBelow GradeMinimum RSI (R)-Value(1)

1.76(R10)

1.76(R10)

1.76(R10)

1.76(R10)

1.76(R10)

1.76(R10)


1.76(R10)

1.76(R10)

1.76(R10)

1.76(R10)

1.76(R10)

1.76(R10)

Windows and Sliding Glass DoorsMaximum U-Value(2) 1.6 1.6 1.8 1.6 1.6 1.8

SkylightsMaximum U-Value(2) 2.8 2.8 2.8 2.8 2.8 2.8

Space Heating EquipmentMinimum AFUE 78% 84% 84% 84% 78% 84%

HRVMinimum Efficiency 55% 55% 70% 55% 70% 75%

Domestic Hot Water Heater Minimum EF(3) - - - - - -

Column 1 2 3 4 5 6 7

Notes to Table 2.1.1.2.B.:(1) The values listed are minimum RSI-Values for the thermal insulation component only. RSI-Values expressed in (m²" K)/W. (2) U-Value is the overall coefficient of heat transfer expressed in W/(m²" K).(3) Minimum efficiency regulated by Green Energy Act, 2009.


(3) Where electric space heating is used, the minimum thermal performance of the building envelope and equipment shallconform to Table 2.1.1.2.C.

Table 2.1.1.2.CZONE 1 - Compliance Packages for Electric Space Heating



A B


8.81(R50)

8.81(R50)


5.46(R31)

5.46(R31)


5.46(R31)

5.46(R31)


5.11(R29)

5.11(R29)


3.52(R20)

2.11(R12)


- -

Edge of Below Grade Slab # 600 mm below gradeMinimum RSI (R)-Value(1)

1.76(R10)

1.76(R10)

Heated Slab or Slab # 600 mm below grade Minimum RSI (R)-Value(1)

1.76(R10)

1.76(R10)

Windows and Sliding Glass DoorsMaximum U-Value(2) 1.6 1.6

SkylightsMaximum U-Value(2) 2.8 2.8

Space Heating EquipmentMinimum AFUE - -

HRVMinimum Efficiency 55% 75%

Domestic Hot Water Heater Minimum EF - -

Column 1 2 3

Notes to Table 2.1.1.2.C.:(1) The values listed are minimum RSI-Values for the thermal insulation component only.

RSI-Values expressed in (m²" K)/W. (2) U-Value is the overall coefficient of heat transfer expressed in W/(m²" K).

(4) Except for solid fuel-burning space heating equipment, where the space heating equipment efficiency is less than 78% orit cannot meet the requirements of the applicable compliance packages, energy efficiency compliance shall be achieved inaccordance with Clause 1 2.2.1.2.(3)(a) of Division B in the Building Code or Subsection 2.1.2. of this SupplementaryStandard.



(1) Except as required in Sentences (2) to (4), the minimum thermal performance of the building envelope and equipmentshall conform to Table 2.1.1.3.A.

Table 2.1.1.3.AZONE 2 - Compliance Packages for Space Heating Equipment with AFUE $ 90%



A B C D E F G H I J K(4) L(5) M(6)


8.81(R50)

8.81(R50)

8.81(R50)

8.81(R50)

8.81(R50)

8.81(R50)

8.81(R50)

8.81(R50)

8.81(R50)

8.81(R50)

8.81(R50)

8.81(R50)

8.81(R50)


5.46(R31)

5.46(R31)

5.46(R31)

5.46(R31)

5.46(R31)

5.46(R31)

5.46(R31)

5.46(R31)

5.46(R31)

5.46(R31)

5.46(R31)

5.46(R31)

5.46(R31)


5.46(R31)

5.46(R31)

5.46(R31)

5.46(R31)

5.46(R31)

5.46(R31)

5.46(R31)

5.46(R31)

5.46(R31)

5.46(R31)

5.46(R31)

5.46(R31)

5.46(R31)


5.11(R29)

5.11(R29)

5.11(R29)

4.75(R27)

4.75(R27)

4.75(R27)

4.75(R27)

4.23(R24)

4.23(R24)

4.23(R24)

3.87(R22)

4.23(R24)

4.23(R24)


3.52(R20)

3.52(R20)

3.52(R20)

3.52(R20)

3.52(R20)

3.52(R20)

2.11(R12)

3.52(R20)

3.52(R20)

2.11(R12)

3.87(R22)

3.87(R22)

3.52(R20)

Below Grade SlabEntire surface > 600 mmbelow gradeMinimum RSI (R)-Value(1)

0.88(R5) - - 0.88

(R5) - - - 0.88(R5) - - - - -

Edge of Below Grade Slab #600 mm below gradeMinimum RSI (R)-Value(1)

1.76(R10)

1.76(R10)

1.76(R10)

1.76(R10)

1.76(R10)

1.76(R10)

1.76(R10)

1.76(R10)

1.76(R10)

1.76(R10)

1.76(R10)

1.76(R10)

1.76(R10)


1.76(R10)

1.76(R10)

1.76(R10)

1.76(R10)

1.76(R10)

1.76(R10)

1.76(R10)

1.76(R10)

1.76(R10)

1.76(R10)

1.76(R10)

1.76(R10)

1.76(R10)

Windows and Sliding GlassDoorsMaximum U-Value(2)

1.6 1.6 1.8 1.6 1.6 1.8 1.8 1.6 1.6 1.6 1.8 1.8 1.8

SkylightsMaximum U-Value(2) 2.8 2.8 2.8 2.8 2.8 2.8 2.8 2.8 2.8 2.8 2.8 2.8 2.8

Space-Heating EquipmentMinimum AFUE 90% 94% 92% 94% 94 % 94% 94% 94% 90% 94% 94% 94% 90%

HRVMinimum Efficiency - - 60% - - 60% 75% - 60% 60% - - 55%

Domestic Hot Water HeaterMinimum EF 0.57(3) 0.57(3) 0.57(3) 0.57(3) 0.67 0.57(3) 0.62 0.67 0.57(3) 0.67 0.57(3) 0.67 0.8

Column 1 2 3 4 5 6 7 8 9 10 11 12 13 14

Notes to Table 2.1.1.3.A.:(1) The values listed are minimum RSI-Values for the thermal insulation component only. RSI-Values expressed in (m²" K)/W. (2) U-Value is the overall coefficient of heat transfer expressed in W/(m²" K).(3) Minimum efficiency regulated by Green Energy Act, 2009.(4) Applies to a building with both ICF basement walls and ICF above grade walls where the thermal insulation value is the sum of the insulation value on

both sides of the walls.(5) Applies to a building with ICF basement walls only where the thermal insulation value is the sum of the insulation value on both sides of the walls.(6) Applies to a building with combined space heating and domestic hot water heating system.


(2) Except for solid fuel-burning space heating equipment and natural gas and propane furnaces, where the space heatingequipment efficiency ranges from 78% to less than 90%, the minimum thermal performance of building envelope andequipment shall conform to Table 2.1.1.3.B.

Table 2.1.1.3.BZONE 2 - Compliance Packages for Space Heating Equipment with AFUE $ 78 % and < 90%


ComponentCompliance PackageA B


8.81(R50)

8.81(R50)


5.46(R31)

5.46(R31)


5.46(R31)

5.46(R31)


5.11(R29)

5.11(R29)


3.52(R20)

3.52(R20)


0.88(R5)

0.88(R5)

Edge of Below Grade Slab # 600 mm belowgradeMinimum RSI (R)-Value(1)

1.76(R10)

1.76(R10)


1.76(R10)

1.76(R10)

Windows and Sliding Glass DoorsMaximum U-Value(2) 1.6 1.6

SkylightsMaximum U-Value(2) 2.8 2.8

Space Heating EquipmentMinimum AFUE 78% 84%

HRVMinimum Efficiency 75% 60%

Domestic Hot Water Heater Minimum EF(3) - -

Column 1 2 3Notes to Table 2.1.1.3.B.:(1) The values listed are minimum RSI-Values for the thermal insulation component

only. RSI -Values expressed in (m²" K)/W. (2) U-Value is the overall coefficient of heat transfer expressed in W/(m²" K).(3) Minimum efficiency regulated by Green Energy Act, 2009.



Table 2.1.1.3.CZONE 2 - Compliance Packages for Electric Space Heating


Component Compliance Package ACeiling with Attic SpaceMinimum RSI (R)-Value(1)

8.81(R50)


5.46(R31)


5.46(R31)


5.11(R29)


3.52(R20)


0.88(R5)


1.76(R10)

Heated Slab or Slab # 600 mm below grade Minimum RSI (R)-Value(1)

1.76(R10)

Windows and Sliding Glass DoorsMaximum U-Value(2) 1.6

SkylightsMaximum U-Value(2) 2.8

Space Heating EquipmentMinimum AFUE -

HRVMinimum Efficiency 75%

Domestic Hot Water Heater Minimum EF -

Column 1 2Notes to Table 2.1.1.3.C.:(1) The values listed are minimum RSI-Values for the thermal insulation

component only. RSI-Values expressed in (m²" K)/W. (2) U-Value is the overall coefficient of heat transfer expressed in W/(m²" K).

(4) Except for solid fuel-burning space heating equipment, where the space heating equipment efficiency is less than 78% orit cannot meet the requirements of the applicable compliance packages, energy efficiency compliance shall be achieved inaccordance with Clause 1 2.2.1.2.(3)(a) of Division B in the Building Code or Subsection 2.1.2. of this SupplementaryStandard.


PROPOSED CODE CHANGE

Add new Chapter 4 by incorporating revised Articles 2.1.1.1. to 2.1.1.3. as follows:

Chapter 4

Acceptable Solutions for Energy Efficiency Compliance after December 31, 2016

Compliance in accordance with Clause 12.2.1.2.(3)(c) of Division B

Section 2.1. Methods for Achieving Energy Efficiency Compliance

2.1.1. Prescriptive Compliance Packages

2.1.1.1. Energy Efficiency

(1) Except as permitted in Articles 2.1.1.5., 2.1.1.6., 2.1.1.8., 2.1.1.9. and 2.1.1.10., the minimum thermal performanceand energy efficiency of building envelope and space heating equipment, domestic hot water heating equipment and heatrecovery ventilators equipment shall conform to

(a) Article 2.1.1.2. if the building is located in Zone 1 with less than 5000 heating degree days, or(b) Article 2.1.1.3. if the building is located in Zone 2 with 5000 or more heating degree days.

(2) All walls, ceilings, floors, windows and doors that separate heated space from unheated space, the exterior air or theexterior soil shall have thermal resistance ratings conforming to this Subsection.

(3) Where specified in compliance packages in Tables 2.1.1.2.A, 2.1.1.2.B and 2.1.1.2.C 2.1.1.2.BC and Tables 2.1.1.3.A,2.1.1.3.B and 2.1.1.3.C 2.1.1.3.BC, space heating equipment, domestic hot water heating equipment and heat recoveryventilators shall have the efficiency rating conforming to this Subsection. (See Appendix A.)

(4) Insulation shall be provided between heated and unheated spaces and between heated spaces and the exterior inaccordance with this Chapter.

(5) Reflective surfaces of insulating materials shall not be considered in calculating the thermal resistance of buildingassemblies.

(6) Where glass block is used in a wall, the required minimum overall performance of the building envelope shall bemaintained by increasing thermal performance of other components sufficient to compensate for the additional heat lossthrough the glass block.

(7) Except as provided in Sentence (8) and except as permitted in Sentence (9), where the ratio of the gross area of windows,sidelights, skylights, glazing in doors and sliding glass doors to the gross area of peripheral walls measured from grade to thetop of the upper most ceiling is not more than 17%, the building shall comply with a compliance package selected from Tables2.1.1.2.A, 2.1.1.2.B and 2.1.1.2.C 2.1.1.2.BC and Tables 2.1.1.3.A, 2.1.1.3.B and 2.1.1.3.C. 2.1.1.3.BC.

(8) Except as permitted in Sentences (9) and 2.1.1.10.(4), where the ratio of the gross area of windows, sidelights, skylights,glazing in doors and sliding glass doors to the gross area of peripheral walls measured from grade to the top of the upper mostceiling is more than 17% but not more than 22%, the building shall comply with a compliance package selected from Tables2.1.1.2.A, 2.1.1.2.B and 2.1.1.2.C 2.1.1.2.BC and Tables 2.1.1.3.A, 2.1.1.3.B and 2.1.1.3.C, 2.1.1.3.BC and the overallcoefficient of heat transfer of the glazing shall be upgraded to

(a) 1.8 where the selected compliance package requires 2.0,(b) 1.6 where the selected compliance package requires 1.8, and(c) 1.4 where the selected compliance package requires 1.6, and(d) 1.2 where the selected compliance package requires 1.4.


(9) Glazing in main entrance doors and adjacent sidelights to main entrance doors need not be calculated for the purposes ofSentences (7) and (8).

(10) Except as provided in Sentence (9), where the ratio of gross area of windows, sidelights, skylights, glazing in doors andsliding glass doors to the gross area of exterior walls measured from grade to the top of the upper most ceiling is more than22%, the building shall comply with Subsection 2.1.2.

(11) Where a dwelling unit has a walkout basement, basement walls separating indoor spaces from outdoor spaces shall have athermal performance level equal to that of the above grade walls.

(12) The minimum thermal resistance of insulation shall conform to the applicable values specified in Articles 2.1.1.2. and2.1.1.3.

(13) The minimum annual fuel utilization efficiency of a furnace serving a building of residential occupancy shall conform toTable 2.1.1.1.A.

(14) Where space heating is supplied by a solid fuel-burning appliance or an earth energy system, the compliance package ispermitted to comply with Tables 2.1.1.2.A. and 2.1.1.3.A.

(13) Every dwelling unit that is within the scope of Part 9 and is intended for occupancy on a continuing basis during thewinter months shall be equipped with a heat recovery ventilator (HRV).

Table 2.1.1.1.A.Furnace Minimum Annual Fuel Utilization Efficiency


Furnace Fuel Source Minimum AFUE

Natural gas 90%

Propane 90%

Oil (1)

Column 1 2

Note to Table 2.1.1.1.A.:(1) Minimum efficiency regulated by Green Energy Act, 2009.


(1) Except as required in Sentences (2) to (4) and (3), and permitted in Sentences (4) and (5), the minimum thermalperformance of building envelope and equipment shall conform to Table 2.1.1.2.A.

(2) Except for solid fuel-burning space-heating equipment and natural gas and propane furnaces, Except as permitted inSentences (4) and (5) where the space heating equipment efficiency ranges from 78% to is less than 90% or where electricspace heating is used, the minimum thermal performance of the building envelope and equipment shall conform to Table2.1.1.2.B. 2.1.1.2.BC.


Note: Existing Tables 2.1.1.2.B and 2.1.1.2.C. deleted and replaced by new Table 2.1.1.2.BC:

(4) (3) Except for solid fuel-burning space heating equipment, Except as permitted in Sentences (4) and (5), where the spaceheating equipment efficiency is less than 78% or it cannot meet the requirements of the applicable compliance packages,energy efficiency compliance shall be achieved in accordance with Clause 12.2.1.2.(3)(a) of Division B in the Building Codeor Subsection 2.1.2. of this Supplementary Standard.


(4) Where space heating is supplied by a solid fuel-burning appliance or an earth energy system, the compliance package ispermitted to comply with Table 2.1.1.2.A.

(5) See E-SB-12-02-02 for proposed new Sentences (5) and (6).


Existing Table 2.1.1.2.A deleted and replaced by:

Option 1: Table 2.1.1.2.A (2012 levels + 10% higher)

Table 2.1.1.2.A (2012 Code +10%)ZONE 1 - Compliance Packages for Space Heating Equipment with AFUE $ 90%



A B C D ECeiling with Attic SpaceMinimum RSI (R)-Value(1)

10.56 (R60)

10.56 (R60)

10.56 (R60)

10.56(R60)

8.80(R50)


5.46(R31)

5.46(R31)

5.46(R31)

5.46(R31)

5.46(R31)


5.46(R31)

5.46(R31)

5.46(R31)

5.46(R31)

5.46(R31)


3.34 + 0.88ci (R19 + R5ci)

4.22 (R24)

3.34 + 0.88ci (R19 + R5ci)

3.87 (R22)

3.87 (R22)


3.52(R20)

3.52(R20)

3.52(R20)

3.52(R20)

3.52(R20)

Below Grade SlabEntire surface > 600 mm below gradeMinimum RSI (R)-Value(1) - - - - -Edge of Below Grade Slab # 600 mm below gradeMinimum RSI (R)-Value(1)

1.76(R10)

1.76(R10)

1.76(R10)

1.76(R10)

1.76(R10)

Heated Slab orSlab # 600 mm below gradeMinimum RSI (R)-Value(1)

1.76(R10)

1.76(R10)

1.76(R10)

1.76(R10)

1.76(R10)

Windows and Sliding Glass Doors Maximum U-Value(2) 1.6 1.6 1.8 1.6 1.8Skylights

Maximum U-Value(2) 2.8 2.8 2.8 2.8 2.8Space Heating EquipmentMinimum AFUE 90% 92% 96% 94% 94%HRV Minimum Efficiency 55% 60% 55% 75% 75%Domestic Hot Water Heater Minimum EF 0.67 0.67 0.67 0.67 0.83

Column 1 2 3 4 5 6

Notes to Table 2.1.1.2.A.:The following apply:

ci = continuous insulationHH = 250 mm heel height

(1) The values listed are minimum RSI-Values for the thermal insulation component only. RSI-Values expressed in (m2⋅ K)/W. (2) U-Value is the overall coefficient of heat transfer for a window assembly or a skylight assembly expressed in W/(m2⋅ K).







10.56 (R60)

10.56 (R60)

10.56 (R60)

10.56 (R60)

10.56 (R60)


5.46(R31)

5.46(R31)

5.46(R31)

5.46(R31)

5.46(R31)


5.46(R31)

5.46(R31)

5.46(R31)

5.46(R31)

5.46(R31)


3.34 + 1.32 ci(R19 + R7.5 ci)

3.87(R22)

3.34 + 0.88 ci(R19 + R5 ci)

4.22(R24)

3.34 + 0.88 ci(R19 + R5 ci)


3.52 + 1.4 ci(R20 + R8 ci)

3.52(R20)

3.52 + 1.4 ci(R20 + R8 ci)

3.52 + 1.4 ci(R20 + R8 ci)

3.52(R20)


1.76(R10)

1.76(R10)

1.76(R10)

1.76(R10)

1.76(R10)


1.76(R10)

1.76(R10)

1.76(R10)

1.76(R10)

1.76(R10)



Column 1 2 3 4 5 6










10.56 + HH (R60 + HH)

10.56 + HH (R60 + HH)

10.56 (R60)

10.56 (R60)

10.56 (R60)


5.46(R31)

5.46(R31)

5.46(R31)

5.46(R31)

5.46(R31)


5.46(R31)

5.46(R31)

5.46(R31)

5.46(R31)

5.46(R31)


3.34 + 1.32 ci (R19 + R7.5 ci)

3.87 + 1.32 ci (R22 + R7.5 ci)

3.34 + 0.88 ci (R19 + R5 ci)

4.22(R24)

3.34 + 1.32 ci (R19 + R7.5 ci)


3.52 + 2.11 ci (R20 + R12 ci)

3.52(R20)

3.52 + 2.11 ci(R20 + R12 ci)

3.52 + 2.11 ci (R20 + R12 ci)

3.52(R20)


1.76(R10)

1.76(R10)

1.76(R10)

1.76(R10)

1.76(R10)


1.76(R10)

1.76(R10)

1.76(R10)

1.76(R10)

1.76(R10)



Column 1 2 3 4 5 6





Existing Tables 2.1.1.2.B and 2.1.1.2.C. deleted and replaced by:

Option 1: Table 2.1.1.2.BC (2012 levels + 10% higher)

Table 2.1.1.2.BC (2012 Code +10%)ZONE 1 - Compliance Packages for Space Heating Equipment with AFUE < 90% or for Electric Space Heating



A B CCeiling with Attic SpaceMinimum RSI (R)-Value(1)

10.56 (R60)

10.56 (R60)

10.56 + HH (R60 + HH)


5.46(R31)

5.46(R31)

5.46(R31)


5.46(R31)

5.46(R31)

5.46(R31)


3.87 + 1.76 ci (R22 + R10 ci)

3.34 + 1.76 ci(R19 + R10 ci)

3.34 + 1.76 ci(R19 + R10 ci)


3.52(R20)

3.52(R20)

3.52(R20)

Below Grade SlabEntire surface > 600 mm below gradeMinimum RSI (R)-Value(1) -

0.88(R5) -


1.76(R10)

1.76(R10)

1.76(R10)


1.76(R10)

1.76(R10)

1.76(R10)

Windows and Sliding Glass Doors Maximum U-Value(2) 1.4 1.6 1.6Skylights

Maximum U-Value(2) 2.8 2.8 2.8Space Heating EquipmentMinimum AFUE - - -HRV Minimum Efficiency 70% 75% 80%Domestic Hot Water Heater Minimum EF - - -

Column 1 2 3 4

Notes to Table 2.1.1.2.BC.:The following apply:









10.56 + HH (R60 + HH)

14.08(R80)

14.08(R80)


5.46(R31)

5.46(R31)

5.46(R31)


5.46(R31)

5.46(R31)

5.46(R31)


3.34 + 1.76 ci(R19 + R 10 ci)

3.87 + 1.76 ci (R22 + R10 ci)

3.34 + 1.76 ci(R19 + R10 ci)


3.52(R20)

3.52 + 1.4 ci(R20 + R8 ci)

3.52 + 1.4 ci(R20 + R8 ci)


1.76 (R10)

1.76(R10) -


1.7 (R10)

1.7(R10)

1.76(R10)


1.76(R10)

1.76(R10)

1.76(R10)


Maximum U-Value(2) 2.8 2.8 2.8Space Heating EquipmentMinimum AFUE - - -HRV Minimum Efficiency 80% 70% 75%Domestic Hot Water Heater Minimum EF - - -

Column 1 2 3 4



(1) The values listed are minimum RSI-Values for the thermal insulation component only. RSI-Values expressed in (m2× K)/W. (2) U-Value is the overall coefficient of heat transfer for a window assembly or a skylight assembly expressed in W/(m2× K).







10.56 + HH(R60 + HH)

14.08(R80)

14.08 + HH(R80 + HH)


5.46(R31)

5.46(R31)

5.46(R31)


5.46(R31)

5.46(R31)

5.46(R31)


3.34 + 1.76 ci (R19 + R10 ci)

3.87 + 1.76 ci(R22 + R10 ci)

3.34 + 1.76 ci (R19 + R10 ci)


3.52(R20)

3.52 + 1.4 ci(R20 + R8 ci)

3.52 + 2.11 ci(R20 + R12 ci)

Below Grade SlabEntire surface > 600 mm below gradeMinimum RSI (R)-Value(1) -

0..88(R5)

1.76(R10)


1.76 (R10)

1.76(R10)

1.76(R10)


1.76(R10)

1.76(R10)

1.76(R10)


Maximum U-Value(2) 2.8 2.8 2.8Space Heating Equipment ASHP 2 COP - -HRV Minimum Efficiency 60% 75% 80%Domestic Hot Water Heater Minimum EF - - -

Column 1 2 3 4


ci = continuous insulationHH = 250 mm heel heightASHP = air source heat pump

(1) The values listed are minimum RSI-Values for the thermal insulation component only. RSI-Values expressed in (m2× K)/W. (2) U-Value is the overall coefficient of heat transfer for a window assembly or a skylight assembly expressed in W/(m2× K).



(1) Except as required in Sentences (2) to (4), and (3), and permitted in Sentences (4) and (5), the minimum thermalperformance of the building envelope and equipment shall conform to Table 2.1.1.3.A.

(2) Except for solid fuel-burning space-heating equipment and natural gas and propane furnaces, Except as permitted inSentences (4) and (5) where the space heating equipment efficiency ranges from 78% to is less than 90% or where electricspace heating is used, the minimum thermal performance of the building envelope and equipment shall conform to Table2.1.1.3.B. 2.1.1.3.BC.


Note: Existing Tables 2.1.1.3.B and 2.1.1.3.C. deleted and replaced by new Table 2.1.1.3.BC:

(4) (3) Except for solid fuel-burning space heating equipment, Except as permitted in Sentences (4) and (5), where the spaceheating equipment efficiency is less than 78% or it cannot meet the requirements of the applicable compliance packages,energy efficiency compliance shall be achieved in accordance with Clause 12.2.1.2.(3)(a) of Division B in the Building Codeor Subsection 2.1.2. of this Supplementary Standard.

(4) Where space heating is supplied by a solid fuel-burning appliance or an earth energy system, the compliance package ispermitted to comply with Table 2.1.1.3.A.

(5) See E-SB-12-02-02 for proposed new Sentences (5) and (6).


Existing Table 2.1.1.3.A deleted and replaced by:





A B C DCeiling with Attic SpaceMinimum RSI (R)-Value(1)

10.56 (R60)

10.56 (R60)

10.56 (R60)

8.8(R50)


5.46(R31)

5.46(R31)

5.46(R31)

5.46(R31)


5.46(R31)

5.46(R31)

5.46(R31)

5.46(R31)


3.34 + 0.88 ci(R19 + R5 ci)

4.22(R24)

3.34 + 1.32 ci(R19 + R7.5 ci)

3.34 + 1.32 ci(R19 + R7.5 ci)


3.52(R20)

3.52(R20)

3.52(R20)

3.52(R20)


0.88(R5)

0.88(R5) - -


1.76(R10)

1.76(R10)

1.76(R10)

1.76(R10)


1.76(R10)

1.76(R10)

1.76(R10)

1.76(R10)

Windows and Sliding Glass Doors Maximum U-Value(2) 1.6 1.6 1.6 1.8Skylights

Maximum U-Value(2) 2.8 2.8 2.8 2.8Space Heating EquipmentMinimum AFUE 90% 92% 94% 94%HRV Minimum Efficiency 60% 65% 75% 75%Domestic Hot Water Heater Minimum EF 0.67 0.67 0.67 0.83

Column 1 2 3 4 5










10.56 (R60)

10.56 (R60)

10.56 + HH(R60 + HH)

10.56 (R60)

10.56 (R60)


5.46(R31)

5.46(R31)

5.46(R31)

5.46(R31)

5.46(R31)


5.46(R31)

5.46(R31)

5.46(R31)

5.46(R31)

5.46(R31)


3.34 + 1.32 ci(R19 + R7.5 ci)

3.34 + 0.88 ci(R19 + R5 ci)

4.22(R24)

3.34 + 1.32 ci(R19 + R7.5 ci)

3.34 + 1.76 ci(R19 + R10 ci)


3.52 + 1.4 ci(R20 + R8 ci)

3.52 + 1.4 ci(R20 + R8 ci)

3.52 + 1.4 ci(R20 + R8 ci)

3.52(R20)

3.52(R20)


0.88(R5)

0.88(R5)

1.76(R10) - -


1.76(R10)

1.76(R10)

1.76(R10)

1.76(R10)

1.76(R10)

Heated Slab or Slab# 600 mm below gradeMinimum RSI (R)-Value(1)

1.76(R10)

1.76(R10)

1.76(R10)

1.76(R10)

1.76(R10)


Maximum U-Value(2) 2.8 2.8 2.8 2.8 2.8Space Heating EquipmentMinimum AFUE 90% 92% 94% 94% 96%HRV Minimum Efficiency 60% 70% 70% 70% 75%Domestic Hot Water Heater Minimum EF

0.67 0.67 0.67 0.83 0.83

Column 1 2 3 4 5 5









A B C DCeiling with Attic SpaceMinimum RSI (R)-Value(1)

10.56 + HH(R60 + HH)

10.56 (R60)

10.56 + HH(R60 + HH)

10.56 (R60)


5.46(R31)

5.46(R31)

5.46(R31)

5.46(R31)


5.46(R31)

5.46(R31)

5.46(R31)

5.46(R31)


3.34 + 1.32 ci(R19 + R7.5 ci)

3.34 + 1.32 ci(R19 + R7.5 ci)

3.34 + 1.76 ci(R19 + R10 ci)

3.34 + 1.76 c (R19 + R10 ci)


3.52 + 2.11 ci(R20 + R12 ci)

3.52(R20)

3.52 + 2.11 ci(R20 + R12 ci)

3.52(R20)


0.88(R5) - - -


1.76(R10)

1.76(R10)

1.76(R10)

1.76 R10)


1.76(R10)

1.76 (R10)

1.76(R10)

1.76(R10)

Windows and Sliding Glass Doors Maximum U-Value(2) 1.4 1.6 1.6 1.6Skylights

Maximum U-Value(2) 2.8 2.8 2.8 2.8Space Heating EquipmentMinimum AFUE 90% 96% 94% 96%HRV Minimum Efficiency 75% 60% 75% 80%Domestic Hot Water Heater Minimum EF 0.67 0.86 0.67 0.83

Column 1 2 3 4 5





Existing Tables 2.1.1.3.B and 12.1.1.3.C deleted and replaced by new Table 2.1.1.3.BC





A BCeiling with Attic SpaceMinimum RSI (R)-Value(1)

10.56 (R60)

10.56 (R60)


5.46(R31)

5.46(R31)


5.46(R31)

5.46(R31)


3.34 + 1.76 ci(R19 + R10 ci)

3.34 + 1.76 ci(R19 + R10 ci)


3.52(R20)

3.52(R20)


1.76(R10) -


1.76(R10)

1.76(R10)


1.76(R10)

1.76(R10)

Windows and Sliding Glass Doors Maximum U-Value(2) 1.4 1.6Skylights

Maximum U-Value(2) 2.8 2.8Space Heating Equipment - ASHP 2 COPHRV Minimum Efficiency 75% 60%Domestic Hot Water Heater Minimum EF - -

Column 1 2 3

Notes to Table 2.1.1.3.BC:The following apply:









10.56 + HH (R60 + HH)

10.56 (R60)


5.46(R31)

5.46(R31)


5.46(R31)

5.46(R31)


3.34 + 1.76 ci(R19 + R10 ci)

3.34 + 1.76 ci(R19 + R10 ci)


3.52 + 2.11 ci(R20 + R12 ci)

3.52(R20)


1.76(R10)

0.88(R5)

Edge of Below Grade Slab # 600 mm Below GradeMinimum RSI (R)-Value(1) 1.76 (R10) 1.76 (R10)Heated Slab or Slab # 600 mm below gradeMinimum RSI (R)-Value(1) 1.76 (R10) 1.76 (R10)Windows and Sliding Glass Doors Maximum U-Value(2) 1.4 1.6Skylights

Maximum U-Value(2) 2.8 2.8Space Heating Equipment - ASHP 2 COPHRV Minimum Efficiency 75% 70%Domestic Hot Water HeaterMinimum EF - -

Column 1 2 3

Notes to Table 2.1.1.3.BC:

The following apply:

ci = continuous insulation

HH = 250 mm heel height

ASHP = air source heat pump

(1) The values listed are minimum RSI-Values for the thermal insulation component only. RSI-Values expressed in (m2⋅ K)/W.

(2) U-Value is the overall coefficient of heat transfer for a window assembly or a skylight assembly expressed in W/(m2⋅ K).







14.08 + HH(R80 + HH)

10.56 + HH (R60 + HH)


5.46(R31)

5.46(R31)


5.46(R31)

5.46(R31)


3.34 + 3.34 (R19 + R19)

3.34 + 1.76 ci(R19 + R10 ci)


3.52 + 2.11 ci(R20 + R12 ci)

3.52 + 2.11 ci(R20 + R12 ci)


1.76(R10)

1.76(R10)


1.76(R10)

1.76(R10)


1.76(R10)

1.76(R10)

Windows and Sliding Glass Doors Maximum U-Value(2) 1.4 1.6Skylights

Maximum U-Value(2) 2.8 2.8Space Heating Equipment - ASHP 2 COPHRV Minimum Efficiency 80% 75%Domestic Hot Water Heater Minimum EF - -

Column 1 2 3

Notes to Table 2.1.1.3.BC:The following apply:




RATIONALE FOR CHANGE

Problem / General Background

Code users have indicated the need to know what enhancements to energy efficiency in Part 9 residential buildings (houses) canbe expected in the future (beyond the December 31, 2011 requirements). For this reason, a potential new energy conservationbenchmark is being considered. New benchmarks would come into force on December 31, 2016. A new energy efficiency benchmark for houses and other Part 9 residential buildings is being considered in this potentialchange. This proposal includes three different options: 10 percent, 15 percent and 20 percent improvement over therequirements for space and water heating energy use that will be mandatory after December 31, 2011. One option would beselected from the three that are described here.

Future requirements will have both prescriptive and performance compliance paths. These prescriptive requirements whichwould be outlined in Chapter 4 of Supplementary Standard SB-12, contain compliance packages based on insulation R-Values. Similarly, the equivalent compliance packages that are based on assembly U-Values would also be outlined in Chapter 4 ofSupplementary Standard SB-12 (proposed change number E-SB-12-02-02). Furthermore, one of the performance compliancemethods will use performance levels of EnerGuide® rating system. When the level is set, a corresponding EnerGuide® ratingwill be determined as one of the alternative compliance paths.

For each option, samples of prescriptive compliance packages are identified. These packages can be expanded in the future.The packages reflect different conditions based on energy types used for space heating as well as regional climatic variations.

Under all options, the “in force” date for potential changes would be December 31, 2016.

In each case, the new requirements would allow an extended period for industry to learn about the new requirements, revisedesign templates as required and build capacity. Cost implications, impact on construction practices and the availability oftechnology were among the factors considered in selecting options for consideration.

Justification / Explanation

The Green Energy and Green Economy Act, 2009 signalled a commitment to using the Building Code to support energypriorities. That legislation amended the Building Code Act, 1992 to clarify that conservation was a “purpose” of the Code,provided for regular reviews of the energy conservation provisions of the Code, and authorized the establishment of theBuilding Code Energy Advisory Council.

This potential change discussed above would support Ontario’s priorities related to:

• Reducing electricity consumption in support of Ontario’s Long Term Energy Plan;

• Supporting the Province’s climate change strategy by reducing the amount of greenhouse gases produced by the operation ofbuildings, and reduce greenhouse gas emissions through energy efficiency requirements; and

• Supporting the growth of a green economy by creating a market for energy efficient and renewable energy technologies.

Cost / Benefit Implications

Higher capital costs are anticipated in meeting an enhanced benchmark. Further flexibility, however, is provided for the designby having several ways to meet it which could reduce costs. Moreover, resulting operating costs would decrease.


Enforcement Implications

Building officials would benefit from training.

Who is Affected

Building officials, designers, builders, manufacturers and building owners.

Objective-Based Analysis

Provision

Objective

FunctionalStatement

ontario’s building code

Documents