Japan Super E Standard. Version 2.0

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Japan Super E

®

Standard

Version 2.0

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Content

Section A – Purpose and Scope

1.0 Purpose

1.1 Promoting Partnerships for Innovative, High Quality Homes 1 1.2 Technical, Administrative and Quality Assurance Requirements 1

1.3 A Voluntary National Standard 1

1.4 Other Applicable Documents 1

2.0 Scope 2.1 Types of Dwellings Covered by This Standard 2 2.2 Compliance with Local Building Codes and Standards 2

Section B – Technical Requirements

3.0 Energy Efficiency Requirements 3.1 Compliance Methods 3.1.1 Prescriptive Path 3

3.1.2 Performance Path 3

3.2 Design Evaluation 3

3.3 Request for Variances 3

3.4 Acceptance of Equivalencies 3

4.0 Building Envelope Requirements 4.1 Thermal Performance 4.1.1 Calculating R-values (RSI) 4 4.1.2 Thermal Resistance Values for Walls, Roofs and Floors 4 4.1.3 Minimizing Thermal Bridging 7

4.1.4 Minimum R-values 7

4.1.5 Adjusting R-values for Radiant Heating 8

4.1.6 Slab on Grade Foundations 8

4.2 Window, Door and Skylight Requirements 4.2.1 U-Values for Windows, Doors and Skylights 8

4.2.2 Solar Heat Gain Coefficients 8

4.2.3 Thermal Resistance of Exterior Doors 8

4.2.4 Insulating Spacer 8

4.2.5 Calculating U-Values 8

4.2.6 Adjustments for Large Window Areas 8

4.2.7 Window Air Leakage 9

4.2.8 Door Air Leakage 9

4.2.9 Window Water Tightness 9

4.2.10 Installation 9

4.3 Air Leakage Control Requirements 4.3.1 Continuous Sealed Air Barrier 9

4.3.2 Air Tightness Testing 9

4.3.3 Air Tightness Test 10

4.4 Moisture Control 4.4.1 Wall and Ceiling Guidelines 10

4.4.2 Building Material Moisture Content 10

4.4.3 Flashing and Trim 12

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Section B – Technical Requirements (cont’d)

4.4.4 Exterior Cladding and Sheathing 12

4.4.5 Wall Weather Barrier 12

4.4.6 Vented Wall Cavities 12

4.4.7 Slab on Grade Foundations 12

4.4.8 Crawlspaces 12

4.4.9 Crawlspace Moisture and Soil Gas Control 13 5.0 Mechanical Systems 5.1 Space Heating and Cooling Systems 5.1.1 Sizing of Heating and Cooling Equipment 13 5.1.2 Cooling Equipment 13

5.1.3 Minimum Seasonal Efficiency 13

5.1.4 Heating and Cooling Distribution Systems 14

5.1.5 Venting Requirements 14

5.1.6 Heat Pump Requirements 14

5.1.7 Cooling 14

5.1.8 Efficiency 14

5.1.9 Electric Heating 14

5.2 Domestic Hot Water Systems 5.2.1 Venting Requirements 15

5.2.2 Minimum Energy Efficiency Requirements 15

5.3 Ventilation Systems 5.3.1 Continuous Mechanical Ventilation 15

5.3.2 Crawlspace Ventilation 15 5.3.3 Ventilation Rates 15 5.3.4 Heat Recovery 16 5.3.5 Ventilation Controls 16 5.3.6 Sealing Ductwork 16 5.3.7 Preventing Condensation 16 5.3.8 Verification 17 5.4 Fireplaces, Stoves and Masonry Heaters 5.4.1 Gas Fireplaces 17

5.4.2 Wood Fireplaces and Stoves 17

5.4.3 Masonry Heaters 17

5.5 Carbon Monoxide Detectors 17

5.6 Ducts Carrying Outside Air 18

5.7 Unvented Combustion Appliances 18

5.8 Commissioning of Mechanical Systems 18

5.9 Operating and Maintenance Instructions 18 6.0 Lighting 6.1 Efficient Lighting 18

7.0 Healthy Housing and Environmental Features 7.1 Healthy Housing Options 18

7.2 Environmental Options 18

7.3 Client Awareness 19

7.4 Reputable Suppliers 19

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Section C – Administration and Quality Assurance

8.0 Canadian Content Requirements

8.1 Point System 20

8.2 Minimum Canadian Content 20

8.3 Sourced Through The Canadian Member 20

8.3.1 Variances 20 9.0 Registering a Super E® Home 9.1 Forms and Other Information to be Submitted 20 9.1.1 Notice of Intent 20

9.1.2 Design Summary 20 9.1.3 Request for Variance 21

9.1.4 Plans and Specifications 21

9.1.5 HOT2000 Input Files 21

9.1.6 Builder Testimonial 21

9.1.7 Air Tightness Test Results 21

9.1.8 Canadian Content Worksheet 21

9.1.9 Ventilation Commissioning 21 9.2 Official Super E® Recognition 9.2.1 Verification of Documentation 21

9.2.2 Issuance of Super E® Certificate 22 10.0 Audit and Quality Assurance 10.1 Inspections 22 10.2 Site Visits 22 10.3 Audit of Participants 22

Tables and Figures

Table 1: Super E® Regional Classifications 4

Table 2A: Minimum Thermal Resistance Values by Building Component 6

Table 2B: Thermal Resistance Values for Slab on Grade 6

Table 2C: Thermal Resistance Values for Sealed Crawlspaces 7

Table 3: Specifications for Window Units 8

Table 4: Wall and Ceiling Moisture Control Guidelines 11 Table 5: Minimum Efficiencies 13

Table 6: Ventilation Rates 16

Figure 1: Thermal Performance Regional Classifications 5

Figure 2: Moisture Control Regional Classifications 5

Glossary

23

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Appendices

Appendix A Healthy Housing and Environmental Features Pick-List A1 Appendix B Sample Wall Assemblies B1 Appendix C Points for Canadian Content C1 Appendix D Elbows Diameter and Number D1 Appendix E Super E® Energy Target Reference House E1 Appendix F QA Flow Chart F1 Appendix G Notice of Intent G1 Appendix H Design Summary H1 Appendix I Request for Variance I1 Appendix J Builder Testimonial J1 Appendix K Ventilation Balancing K1

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Section A – Purpose and Scope

1. PURPOSE

1.1 Promoting Partnerships for Innovative, High Quality Homes – The intent of the

Japan Super E® Program is to:

• Promote partnerships between export-ready Canadian companies and the Japanese building industry; and

• Support the design, construction and marketing of innovative, high quality housing for the Japanese market.

Commentary

The Super E® House Program is built on the collective experience of Canada’s R-2000 and Advanced House initiatives. The Super E® House Program represents an integration of best practices from Canada, Japan and the UK using tested products and construction methods. Companies must become a member of the Japan Super E® House Program before they are eligible to build a registered Super E® House. Japanese and Canadian Super E® members benefit from strong business support from the Government of Canada and enhanced access to Canada’s extensive housing network.

1.2 Technical, Administrative and Quality Assurance Requirements – The Japan Super

E® Standard describes the technical, administrative and quality assurance requirements

that a new dwelling must follow to be registered as a Super E® house. This includes criteria for the design, construction, inspection, testing and operation of the dwelling to reduce carbon emissions and improve energy efficiency, comfort, building durability, indoor air quality and environmental responsibility.

Commentary

The Japan Super E® Standard ensures the reduction of energy use and resulting carbon emissions in new dwellings without compromising the health of the occupants, the robustness of construction, or sustainability of the natural environment. There are both performance goals and prescriptive measures that a dwelling must meet to become a registered Super E® house. These requirements give flexibility in design and in the selection of construction techniques, building products, mechanical equipment, lighting and appliances. For an explanation of acronyms not defined within the body of this Standard and other terms used in this document, see the Glossary on page 23.

1.3 A Voluntary National Standard – The Japan Super E®

Standard is a voluntary

national standard that applies to all of Japan. In order to accommodate the different climatic conditions in Japan, there are 6 different thermal ‘zones’ and 5 different moisture zones, each with their own technical requirements. Section 4.1.2 describes these zones and the requirements in each.

1.4 Other Applicable Documents – The following documents should be consulted for

additional information about the Super E® Program and its procedures: • Canada’s Super E®

Program: Canadian Members’ Manual

• Canada’s Super E®

Program: Japanese Members’ Manual

Commentary

The Japan Super E® Standard is periodically updated to ensure that it reflects the most current Canadian and Japanese research and technology for housing. To ensure you are working with the most current edition of this document, or to suggest improvements, contact the Super E® Office at [email protected].

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2. SCOPE

2.1 Types of Dwellings Covered by This Standard – The Japanese Super E®

Standard applies to new, low-rise dwellings (i.e. detached houses, semi-detached houses, bungalows, row houses, and apartments) that do not share heating, cooling, ventilation or domestic hot water systems with other dwellings.

Commentary

Mid- and high-rise multi-unit residential buildings or apartments that use central rather than individual heating, cooling, ventilation and domestic hot water systems are beyond the scope of this Standard.

2.2 Compliance with Local Building Codes and Standards – These Technical

Requirements are in addition to the requirements of local or National Building Codes and Standards. All houses constructed to these Technical Requirements must comply with the requirements of the current edition of the local building code and any mandatory energy code(s).

Better Building Recommendations

Also included in the Technical Requirements are “Better Building Recommendations”. These are not “requirements” but are practices strongly recommended by the Super E® House Program. They represent future direction for the Program and will likely become actual requirements in the future. Some also represent practices that cannot easily be enforced by the Program at this time. It is expected, however, that program participants will endeavour to follow such recommendations to the best of their ability.

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Section B – Technical Requirements

3. ENERGY EFFICIENCY REQUIREMENTS

3.1 Compliance Methods – Meeting the energy efficiency requirements of the Japan

Super E® Standard can be done in two ways:

3.1.1 Prescriptive Path – If this method is used, all prescriptive requirements of this

document must be met and no computer modeling is required; or

3.1.2 Performance Path – If this method is used, an equivalent reference house that

meets the minimum Super E® prescriptive requirements is modeled using HOT2000™ energy analysis software. The proposed Super E® design is then modeled. The proposed design is deemed acceptable if its projected annual energy usage is equal to or less than the Super E® reference house.

Commentary

HOT2000™ energy analysis software can be downloaded at no charge from the CANMET Energy Technology Centre at

http://www.sbc.nrcan.gc.ca/software_and_tools/hot2000_e.asp. The procedure for

establishing an equivalent reference house (which is a version of the house meeting all the prescriptive requirements) is described in Appendix E.

3.2 Design Evaluation – Proof of compliance with the Japan Super E®

Standard is required at the design stage for each house. This shall be accomplished through a review of the proposed plans and specifications by a Super E® Design Professional.

Commentary

The Super E® Design Professional must approve of the proposed design, as outlined in the Design Summary, including:

• Thermal Control Strategy

• Moisture Control Strategy

• Ventilation Design

• Mechanical Equipment

• IAQ and Environmental Features

3.3 Request for Variances – A request can be made at the design stage or during

construction to vary from the Japan Super E® Standard. Variances will be granted

where it can be demonstrated on the basis of past performance, tests or evaluations that the intent of the Japan Super E® Program will still be met and the performance of the dwelling is not compromised.

Commentary

The Japan Super E® Standard is intended to allow flexibility in the design. It is recognized that there are alternative construction methods that may offer equal or better performance but were not anticipated when this standard was drafted. Similarly, changes may have to be made during construction that differs from the requirements of the Program or from the initial design. As long as it can be proven that the integrity of the Program as well as the dwelling are not compromised, a variance may be issued. To request a variance, the Super E® Design Professional must complete the ‘Request for Variance Form’ (see Appendix I) and submit the form to the Super E® Office for approval.

3.4 Acceptance of Equivalencies – Natural Resources Canada, in consultation with the

Canada Mortgage and Housing Corporation, has the sole authority to accept equivalent materials, products, techniques or qualifications.

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4. BUILDING ENVELOPE REQUIREMENTS 4.1 Thermal Performance

4.1.1 Calculating R-Values (RSI) – The effective thermal resistance of exposed roof,

wall and floor elements shall consider the thermal bridging effects of structural or other framing and be calculated in accordance with:

• ASHRAE Handbook of Fundamentals; or • HOT2000™ energy analysis software

Appendix B shows wall assembly examples and their actual thermal resistances and R-values.

4.1.2 Thermal Resistance Values for Walls, Roofs and Floors – Exposed roof,

wall, and floor elements shall limit heat loss by providing an effective thermal resistance that is equal to or better than those shown in Tables 2A and 2B in accordance with the regional classifications indicated in Table 1 and Figure 1.

Commentary

Note that these assemblies must also include moisture control – see Section 4.4 Moisture Control.

Table 1: Super E® Regional Classifications

Zone Zone

Moisture Thermal Prefecture

WP [kJ/kg] July to August

Temp. [0C]

Jan to Feb Moisture Thermal Prefecture

WP [kJ/kg] July to August Temp. [0C] Jan to Feb A I Hokkaido 102 -5.2 C IV Kyoto 130 4.2 A II Aomori 117 -1.8 C IV Osaka 131 5.6 A II Iwate 120 -2.2 C IV Hyogo 136 4.8 A II Akita 123 -0.4 C IV Nara 137 3.5 A III Miyagi 126 1.1 C IV Tottori 138 3.7 A III Yamagata 123 -0.8 C IV Okayama 139 4.8 A III Fukushima 125 1.2 C IV Ehime 134 5.4 A III Nagano 119 -0.9 D IV Mie 140 4.6 A IV Yamanashi 129 2.7 D IV Wakayama 143 6.6 B III Niigata 132 2.2 D IV Shimane 141 3.8 B III Tochigi 132 1.9 D IV Hiroshima 140 4.2 B IV Ibaragi 135 2.7 D IV Yamaguchi 143 5.9 B IV Toyama 136 2.1 D IV Tokushima 141 5.5 B IV Ishikawa 134 2.9 D IV Kagawa 141 4.9 B IV Fukui 134 2.6 D IV Kochi 143 6.1 B III Niigata 132 2.2 D IV Shimane 141 3.8 C IV Gunma 131 3.0 D IV Fukuoka 141 6.1 C IV Gifu 137 4.0 D IV Saga 146 5.5 C IV Shiga 135 3.2 D IV Nagasaki 146 6.7 C IV Saitama 134 3.5 D IV Kumamoto 143 5.5 C IV Chiba 139 5.9 D IV Oita 142 5.7 C IV Tokyo 132 5.4 D V Miyazaki 149 7.4 C IV Kanagawa 137 5.2 D V Kagoshima 147 7.7 C IV Shizuoka 137 6.4 E VI Okinawa 154 15.2 C IV Aichi 137 4.0 Page 4 of 24

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Table 2A: Minimum Thermal Resistance Values (including thermal bridging) By Building Component

(See Appendix B for sample assemblies)

Zone Units External

Walls Flat Ceilings Sloped Ceilings Floors over Ventilated Crawlspaces* Exposed Floors I RSI (m2C/W) C (W/m2C) R (ft2F/BTUH) 3.31 0.30 18.78 5.88 0.17 33.40 5.88 0.17 33.40 4.17 0.24 23.66 5.38 0.19 30.52 II RSI (m2C/W) C (W/m2C) R (ft2F/BTUH) 3.31 0.30 18.78 5.38 0.19 30.52 4.17 0.24 23.66 4.17 0.24 23.66 5.38 0.19 30.52 III RSI (m2C/W) C (W/m2C) R (ft2F/BTUH) 2.97 0.34 16.84 4.78 0.21 27.13 4.17 0.24 23.66 3.19 0.31 18.09 4.78 0.21 27.13 IV RSI (m2C/W) C (W/m2C) R (ft2F/BTUH) 2.69 0.37 15.26 4.30 0.23 24.42 4.17 0.24 23.66 2.94 0.34 16.70 4.30 0.23 24.42 V RSI (m2C/W) C (W/m2C) R (ft2F/BTUH) 2.39 0.42 13.57 4.17 0.24 23.66 4.17 0.24 23.66 2.94 0.34 16.70 3.74 0.27 21.23 VI RSI (m2C/W) C (W/m2C) R (ft2F/BTUH) 1.89 0.53 10.71 4.17 0.24 23.66 4.17 0.24 23.66 0.00 0.00 0.00 0.00 0.00 0.00 Note:

a) Actual thermal resistance values are defined as effective thermal resistance of the assembly as

calculated from fundamental principles or as calculated using HOT2000™, and include thermal bridging. b) External walls includes underground portion of basement walls.

c) For comparisons to NGenECL, see Appendix B, in tables B2 and B3. d) Any part of a roof having a pitch of 700 or more shall be considered a wall.

*It is strongly recommended by the Super E® House Program that ventilated crawlspaces not be used. If a crawlspace is to be used, Super E® recommends a sealed crawlspace with appropriate insulation, moisture control, etc. — see Crawlspace Better Building Practice on www.super-e.com.

Commentary

Super E® requirements in Table 2A represent the higher of Japanese R2000 (1993) and NGenECL (July 30, 1999) values.

Commentary

Party walls or floors that separate two dwellings can be reasonably assumed to be heated to similar temperatures and do not need thermal insulation but may still require acoustic insulation for noise control.

Table 2B: Thermal Resistance Values for Slab on Grade

Zone Units Whole Slab

I to V RSI (m2C/W) C (W/m2C) R (ft2F/BTUH) 1.67 0.60 9.46 VI RSI (m2C/W) C (W/m2C) R (ft2F/BTUH) 0.00 0.00 0.00 Page 6 of 24

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Table 2C: Thermal Resistance Values for Sealed Crawlspaces

Zone Units Wall* Whole Floor

I RSI (m2C/W) C (W/m2C) R (ft2F/BTUH) 2.48 0.40 14.09 1.25 0.80 7.10 II RSI (m2C/W) C (W/m2C) R (ft2F/BTUH) 2.48 0.40 14.09 1.25 0.80 7.10 III RSI (m2C/W) C (W/m2C) R (ft2F/BTUH) 2.22 0.45 12.63 1.25 0.80 7.10 IV RSI (m2C/W) C (W/m2C) R (ft2F/BTUH) 2.02 0.50 11.45 1.25 0.80 7.10 V RSI (m2C/W) C (W/m2C) R (ft2F/BTUH) 1.79 0.56 10.17 1.25 0.80 7.10 VI RSI (m2C/W) C (W/m2C) R (ft2F/BTUH) 1.42 0.71 8.04 0.00 - 0.00

*Continuous rigid (interior) or rigid/semi-rigid (exterior) insulation

Better Building Recommendations

Sealed crawlspace walls, above or below grade, shall include a continuous thermal barrier between the interior and exterior. The effective thermal resistance of the crawlspace walls shall not be less than that shown in Table 2C in accordance with the regional classifications indicated in Table 1. These values are actual, not nominal, thermal resistance values.

Thermal insulation installed onto crawlspace walls shall extend from the top of the wall to a) the top of the footing, or b) the greater of 500 mm below grade or the frost penetration depth. Where thermal insulation is applied to the exterior of the crawlspace walls, a rigid, opaque, and weather resistant covering, plaster, or fibre-reinforced cement board should be used to protect any exposed insulation. Where thermal insulation is applied to the interior of the crawlspace walls, the insulation should have a flame spread and smoke production rating that meets the requirements for interior finishes, or be protected by a thermal barrier such as plaster, or fibre-reinforced cement board. Ventilation for crawlspaces should be provided as described in Section 5.3.2. Ventilation supply will be through the HRV and will provide conditioned air to the space. Exhaust will also be through the HRV.

The following guidelines are recommended:

o A minimum of 3 ac/h – up to three months after the concrete is poured;

o A minimum of 0.5 ac/h – after the above period; it is highly recommended that the temperature and the moisture in the crawlspace be measured to ensure that there is no indication of moisture problems before the owner moves into the house.

4.1.3 Minimizing Thermal Bridging – The construction plans for each Super E®

house shall include detailed cross-section of junctions between walls, roofs and floors as well as around window and door openings that demonstrate that thermal bridging will be minimized.

4.1.4 Minimum R-values – Effective thermal resistance of exposed floor, wall,

basement and roof elements may be up to 30% less stringent than shown in Table 2A, 2B and 2C provided that the projected annual energy consumption of the house does not exceed the energy use of an equivalent reference house described in Clause 4.1.2.

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Better Building Recommendation

When using the Performance Path described in Clause 3.1, a satisfactory solution may be achieved where the R-values of some building elements are worse (up to 30%) than those shown in Tables 2A, 2B and 2C provided that the poorer performance is compensated by better

performance of the other elements. Reductions in performance for individual elements are limited to avoid condensation risks on inner surfaces of the building fabric as well as not compromising the overall aim of the conservation of fuel and power.

4.1.5 Adjusting R-values for Radiant Heating – Where radiant heating cables,

pipes or membranes are embedded in the surface of an opaque element of the building envelope, that element shall have an effective R-value that is at least 20% better than that required by Tables 2A, 2B and 2C.

4.1.6 Slab on Grade Foundations – Slab edge insulation shall be a minimum of RSI

0.88

4.2 Window, Door and Skylight Requirements

4.2.1 U-Values for Windows, Doors and Skylights – Windows, doors and skylights

shall limit heat loss by providing an overall average U-value that is equal to or better than those shown in Table 3, or meet the following requirements: • Zones I & II: double-glazed, low-e, argon

• Zones III to VI: double-glazed, low-e

4.2.2 Solar Heat Gain Coefficients (SHGC) – Windows will meet SHGC as specified in Table 3.

Table 3: Specifications for Window Units Super Regional

Classification Solar Heat Gain Co-eff. (Fixed/Operable)Max. U Value (W/m2C) Zone I and II SG≥0.55 2.3/2.0 Zone III 0.41≤SG≤0.6 2.55/2.09

Zone IV SG≤0.4 2.55/2.09 Zone V and VI SG≤0.4 2.55/2.09

4.2.3 Thermal Resistance of Exterior Doors – Exterior doors will have a thermal

resistance of 0.48 RSI, or R2.7, for all thermal zones.

4.2.4 Insulating Spacer – Windows in Zones I and II must have insulating spacers.

4.2.5 Calculating U-Values – The U-Values of windows, doors and skylights shall be

calculated in accordance with:

• ASHRAE Handbook of Fundamentals, or • HOT2000™ Energy Analysis Software, or

4.2.6 Adjustments for Large Window Areas – The target U-values shown in Table

3 are area-weighted averages. If the combined area of windows, doors and skylights exceed 25% of the floor area of the house, the target U-value shall be adjusted so that total annual heat loss does not increase.

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4.2.7 Window Air Leakage – Canadian-supplied windows shall limit the rate of air

leakage to no more than 0.55m3/hour for each square metre of window area at a static pressure of 75 Pascals when tested in conformance to the A3 leakage classification CSA A440.2-04 Energy Performance of Windows and Other

Fenestration Systems.

At least an A4 rating is recommended for air leakage, especially for casement windows, which can meet this level more easily than horizontal, or vertical sliding windows.

4.2.8 Door Air Leakage – Exterior door assemblies shall be weather-stripped on all edges to minimize air leakage.

The rate of air leakage should be no more than 0.82 litres/second for each metre of door crack when tested in conformance with ASTM E 283 Standard Test Method for Rating of Air Leakage Through Exterior Windows, Curtain Walls and Doors at a static pressure difference of 75 Pascals.

4.2.9 Window Water Tightness - Canadian-supplied windows shall have a water

tightness rating of B4 or better when tested in conformance CSA A440.00 (R2005) Windows.

Since hinged windows such as a casement or awning perform better than sliding windows, even a B7 rating can be recommended.

4.2.10 Installation – Windows and doors shall be installed in accordance with CAN/CSA

A440.4-07 Window and Door Installation.

Windows should be installed following practices equivalent to those recommended by CAN/CSA A440.4.

4.3 Air Leakage Control Requirements

4.3.1 Continuous Sealed Air Barrier – Opaque building fabric elements shall be

constructed with a continuous, sealed air barrier that separates conditioned space from unconditioned space.

The air barrier may be located anywhere within the building envelope provided the vapour permeability rating of the air barrier will not cause condensation within the wall cavities.

4.3.2 Air Tightness Testing – Airtightness testing of the building envelope shall be

performed in accordance with The Law Concerning the Rationalization of Energy use in Japan (revised in February 1992) and shall not exceed an Ar of 0.89

cm2/m2 at 10 Pa or 1.5 air changes/hour at a pressure differential of 50 Pa in accordance with the Canadian system, CAN/CGSB-149.10-M86, Determination of the Airtightness of Building Envelopes by the Fan Depressurization Method.” (Ar is the ratio of normalized leakage area to conditioned floor area).

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Commentary

Minimizing air leakage is critical to building performance. It not only reduces drafts and saves energy, but also ensures durability by allowing rain screen walls to function effectively and prevents moist indoor air from leaking outward and condensing within the building envelope.

4.3.3 Air Tightness Test – A test of airtightness control measures shall be conducted

on every Super E® house after completion of the dwelling’s building shell including the interior finish. The test shall be conducted in accordance with Clause 4.3.2.

Commentary

A copy of the tester’s report must be affixed to the Super E® ‘Builder Testimonial’ before it is submitted to the Super E® Office.

All crawlspaces shall be built as unvented extensions of the above-grade building. Continuity between the air barrier system in the above-grade wall system and an air barrier system in the crawlspace shall be provided.

4.4 Moisture Control

Commentary

These requirements address design criteria to protect the building envelope from the accumulation of either interior generated or exterior generated moisture. The type of vapour barrier to prevent condensation due to diffusion of moisture and to encourage drying will be dependent on whether the building is located in a predominantly cooling, mixed or heating climate. Designing wall systems to be resistant to moisture damage can be complex when one has to consider the properties of the air and vapour barrier and their location. Japan’s climate places added pressures on building envelope systems to resist moisture and rain accumulation from the exterior. Rain screen, compartmentalization and vented cavity principles should be considered to protect building envelopes from driving rain. Interstitial condensation during cooling conditions in central and southern (western) Japan can be exacerbated by the installation and operation of cooling equipment as well as the type of vapour barrier. Canadian and Japanese research all indicates that sealed crawlspaces are the preferred practice for crawlspace construction in all climates for proper moisture control.

4.4.1 Wall and Ceiling Guidelines – Walls and ceilings shall use a continuous

moisture barrier as described in Table 4.

In general, polyethylene vapour barrier cannot be used without XPS or EPS. In the development of this table, the effects of the vapour resistance of the insulation were considered along with the resistance of the vapour retarder combined, of course, with the thermal properties of the insulation. The calculated dew point cannot fall within the wall assembly. The table was developed using extensive modeling to determine the acceptable vapour transmission in the walls for the different climate zones. Note that in moisture zones C and D, EPS or XPS must be used in the wall, following the

specifications in this table. Otherwise, an interior ‘breathable membrane’ may be used.

4.4.2 Building Material Moisture Content – All building materials shall be dry and

protected on the building site at all times from moisture and rain. The moisture content of wood building materials shall not exceed 19% at the time they are incorporated into the building envelope.

The use of a properly calibrated, pin-type wood moisture meter is strongly encouraged to verify that wood framing materials do not exceed 19% moisture content.

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Table 4: Wall and Ceiling Moisture Control Guidelines

In the following table, when there is reference to XPS or EPS insulation, where this insulation is used in the construction of the walls for thermal reasons, then the amount must be at least the amount given in the table, and must be combined with the vapour retarder listed. If no XPS or EPS insulation is to be used in the wall, then the other option (generally option 2) should be used.

Regional Classifications

(Zones) Wall Moisture Control Ceiling Moisture Control Thermal Moisture Option 1 Option 2 Requirement Better Building

Practice I A II A III A Vapour barrier primer or polyethylene for locations with water potential ≤ 125** B IV B Outermost insulation must be at least 25 mm of XPS or EPS* AND

Interior vapour barrier of polyethylene or

vapour barrier primer Vapour-barrier primer Polyethylene or vapour barrier primer C D V D Minimum 89 mm XPS or EPS* AND

Interior vapour barrier primer or polyethylene Outermost insulation must be at least 25 mm of XPS or EPS* and interior vapour barrier primer OR Breathable membrane*** Vapour barrier primer OR Breathable membrane*** VI E Minimum 89 mm XPS or EPS AND No interior vapour barrier No XPS or EPS, no interior vapour barrier No vapour barrier Minimum 25 mm XPS or EPS*

This table assumes a rain-screen/ventilated-cavity wall and an overall airtightness for the house of 1.5 ach @ 50 Pa. Polyethylene is assumed to be a Type 1 vapour barrier with a vapour permeance less than or equal to 15 metric perms. Vapour barrier primer is assumed to be a finish applied to the drywall having a vapour permeance greater than 40 metric perms and less than 60 metric perms. Where only vapour barrier primer is specified, the use of a vapour barrier behind the drywall is not acceptable nor is one of vapour permeance less than 40 metric perms.

*XPS (extruded polystyrene) or EPS (expanded polystyrene) can be replaced with any material with both a thermal resistance greater than that of EPS and vapour permeability less than that of EPS.

**Asahikawa can only use Option 1 because of high winter exterior humidity levels.

***Breathable membrane –In zones C and D, this product has been shown to be acceptable in a 2x6 wall with high permeability batt insulation.

In the southern, more hot and humid regions, particularly Zones C, D, and especially E, Super E® walls are designed for drying to the interior of the house. As such, it is important that no low-permeability finish (such as low-permeability vinyl wall paper, which can be bad for indoor air quality anyway) be placed on walls requiring vapour barrier primer or no vapour barrier. A breathable membrane is a good option for zones C and D. This extends to post occupancy, and homeowners should be advised not to cover such walls with low-permeance finishes.

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4.4.3 Flashing and Trim – Flashing and trim shall be detailed and installed at

windows, doors, foundation connections and any other potential leakage points to prevent penetration from moisture or rain.

Refer to the CMHC (Canada Mortgage and Housing Corporation) Best Practice Guide ‘Flashings’ for advice on how to prevent problems.

4.4.4 Exterior Cladding and Sheathing – All exterior cladding and sheathing

components shall be designed and selected to prevent damage to building components from moisture or rain.

4.4.5 Wall Weather Barrier – All wall systems shall have a weather barrier behind

the exterior finish for shedding rain and to prevent wind washing of insulated wall cavities.

Commentary

This may be an appropriately installed sheathing membrane or a joint-sealed sheathing system.

4.4.6 Vented Wall Cavities – All wall systems will be designed and constructed with

a vented cavity that functions as a rainscreen.

For recommended practice in designing and constructing a rainscreen wall, see the Canadian Wood Council’s ‘Moisture and Wood-Frame Buildings’ available as a free download from http://www.cwc.ca. Additional guidance on avoiding risks such as rain penetration and condensation that might result from energy efficiency measures is given in:

• CMHC (Canada Mortgage and Housing Corporation) Best Practice Guides ‘Wood Frame Envelopes,’ and:

• ‘Wood Frame Envelopes in the Coastal Climate of British Columbia’, and:

• The Canadian Wood Council and Forintek Canada website

http://www.durable-wood.com

4.4.7 Slab on Grade Foundations – A moisture tolerant and tear resistant vapour

impermeable (M < 30 ng/Pa s m2) ground cover, a 10 mil polyethylene or an approved equivalent product, shall be installed under all slabs.

4.4.8 Crawlspaces – A moisture tolerant and tear resistant vapour impermeable (M < 30 ng/Pa s m2) ground cover, a 10 mil polyethylene or an approved equivalent product, shall be installed under the floor of all crawlspaces. The ground cover shall be covered with protective ballast (with minimum mass of 50 kg/m2) of durable material such as concrete or river gravel.

A material layer (including insulation) with a permeance of less than 100 ng/Pa s m2 shall be installed on the interior side of the crawlspace walls in Climate Zones I, II, and III. The vapour permeance of any layer, other than concrete or masonry walls, inside of the crawlspace insulation shall have a vapour permeance of more than 100 ng/Pa s m2 in Climate Zones IV, V, and VI. Foam insulation layers with a permeance of less than 2000 ng/Pa s m2 are exempt from these vapour control requirements. The ground cover must be well fastened and sealed to all penetrations including walls, interior piers, service penetrations, and support posts to avoid radon and soil-gas penetration into the building interior. Continuity between the vapour barrier system in the above grade wall system, vapour barrier system in the crawlspace, and ground cover shall be provided.

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A perimeter drainage system shall be employed at the footing level to remove liquid water from the soil from crawlspaces with the floor level below the exterior grade level and where there is evidence that the ground water can rise to within 150 mm of the

crawlspace. All capillary active walls (i.e., concrete and masonry walls) in contact with the soil shall be dampproofed.

4.4.9 Crawlspace Moisture and Soil Gas Control – Control measures shall be

used to isolate a crawlspace so as to minimize the transmission of moisture and soil gases into the house.

The crawlspace must be accessible from the interior of the house for inspection and cleaning purposes. The lowest structural element projecting downward from the floor must be at least 400 mm above the surface of the crawlspace.

5. MECHANICAL SYSTEMS

5.1 Space Heating and Cooling Systems

Commentary

Super E® standards for mechanical systems are designed to increase energy efficiency, ensure comfort and improve indoor air quality through the effective distribution of heating, cooling and ventilation air.

5.1.1 Sizing of Heating and Cooling Equipment – Space heating and space cooling

equipment shall be sized in accordance with:

• CAN/CSA-F280 Determining the Required Capacity of Residential Space

Heating and Cooling Appliances; or

• HOT2000™ Energy Analysis Software; or • NGenCL Methodology

Heating equipment should not be oversized by more than 10%. Cooling equipment should not be oversized by more than one sizing increment (e.g. ½ ton if increments are 1 ½ tons, 2 tons, 2 ½ tons, etc.).

5.1.2 Cooling Equipment – Houses in Zones IV, V and VI shall have space cooling systems.

5.1.3 Minimum Seasonal Efficiency – Heating and cooling systems shall have a

minimum seasonal efficiency as shown in Table 5.

Table 5: Minimum Efficiencies COP

A/C 3 Air-source heat pump 4

Ground-source heat pump 3.3

SSE Furnaces 92 (85 for kerosene-fired) Boilers 85 Page 13 of 24

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5.1.4 Heating and Cooling Distribution Systems – All space heating and cooling

distribution systems shall be designed and installed in accordance with

recognized Japanese industry standards and good engineering practices.

This requirement is intended to ensure appropriate mechanical system performance. Sizing and layout drawings should be provided. Use the following standards for Canadian supplied systems where they are found to be more stringent than Japanese industry practice:

• For hydronic systems, use the CAN/CSA-B214-07, Installation Code for Hydronic Heating Systems;

• For forced-air systems, use the ‘HRAI Residential Air System Design Manual’; or

• For combination systems, use HRAI’s ‘Unified Canadian Guideline for Integrated (Combo) Heating Systems’.

5.1.5 Venting Requirements – All combustion space heating equipment shall be

independently vented and have either sealed direct-vent, induced-draft or forced draft-venting systems with electronic ignition. Induced-draft and forced draft vented equipment shall be capable of positive shutdown in the case of venting system blockage.

Commentary

This requirement is to ensure that all equipment used for space heating is not susceptible to combustion spillage since this can pose a serious health and safety risk. Naturally aspirated equipment (i.e. those with open flues), as well as equipment with standing pilot lights, are susceptible to spillage and do not meet this requirement. Also, spillage-resistant equipment operates at higher efficiencies thereby saving energy and reducing operating costs. The prohibition against combined venting systems avoids the problem of one appliance spilling into the other if the house is depressurized.

5.1.6 Heat Pump Requirements – Heat pumps for space heating, when installed,

shall have instantaneous heating COPs when tested according to JIS standards B8616 and C9612 as indicated in Table 5 or better. This equipment will be rated by the manufacturer for use at 100 volt or 200 volts 60 Hertz and 100 or 200 volts 50 Hertz or shall be supplied with transformers and power converters to allow safe operation when using those power sources.

5.1.7 Cooling – Electric central or room by room type cooling systems shall have instantaneous cooling COPs when tested according to JIS standards B8616 and C9612 as indicated in Table 5 or better. This equipment will be rated by the manufacturer for use at 100 volts or 200 volts 60 Hertz and 100 volts or 200 volts 50 Hertz or shall be supplied with transformers and power converters to allow safe operation when using those power sources.

5.1.8 Efficiency – Where computer simulation is being performed and COP must be calculated from a given SEER, the conversion shall be: COP = 0.115 x SEER + 1.428.

5.1.9 Electric Heating – Electrical resistance heating systems shall not have a COP of less than 1.0.

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5.2 Domestic Hot Water Systems

5.2.1 Venting Requirements – All combustion domestic water heating equipment

shall be independently vented and have either sealed direct-vent, induced-draft or forced draft-venting systems with electronic ignition. Induced-draft and forced draft vented equipment shall be capable of positive shutdown in the case of venting system blockage.

Commentary

See commentary for Clause 5.1.5.

5.2.2 Minimum Energy Efficiency Requirements – Canadian-supplied water

heaters shall have:

• An Energy Factor of 0.58 or greater if it is gas-fired; or • An Energy Factor of 0.57 or greater if it is oil-fired; or

• Standby losses not exceeding 65 Watts for a 175 litre (40 imperial gallon) electric water heater or 80 Watts for a 270 litre (60 imperial gallon) electric water heater when measured in accordance with CSA-C191-04 Performance

of Electric Storage Tank Water Heaters for Domestic Hot Water Service.

5.3 Ventilation Systems

5.3.1 Continuous Mechanical Ventilation – All Super E®

Houses shall incorporate a mechanical ventilation system capable of continuous operation. The system must be distributed and supply fresh outdoor air or exhaust stale air from every room in the house.

5.3.2 Crawlspace Ventilation – Airflow between the crawlspace and the living area

shall be provided with a minimum of two vents (150 cm2 free area) in the floor at opposite ends of the crawlspace. Air must be exhausted from the crawlspace if you are installing an HRV or ERV

Design and install the mechanical ventilation system in accordance with CAN/CSA F326-M91 (R2005) Residential Mechanical Ventilation Systems. For houses that do not incorporate a forced-air heating or cooling system, use a heat recovery ventilator with fans that have an electrical power consumption not exceeding 2.5 Watts/litre/second of air flow capacity at 00C at the lowest airflow tested. For houses with a forced-air heating or cooling system, air circulation and fresh air ventilator fans that have a combined electrical power consumption not exceeding 0.75 Watts/litre/second of combined airflow. (Note: Meeting this requirement necessitates the use of ECM motors.)

5.3.3 Ventilation Rates – The mechanical ventilation system required by Clause

5.3.1 shall be capable of providing continuous mechanical ventilation at rates that equal or exceed those shown in Table 6, or, the mechanical ventilation system shall meet local Japanese regulations.

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Table 6: Ventilation Rates

Room Type Minimum Continuous Ventilation Rate Required

litres/second M3/hour Kitchen 5 18 Dining 5 18 Living 5 18 Master Bedroom 10 36 Bedroom 5 18 Toilet 5 18 Utility 5 18 Other Habitable 5 18 Unfinished Basement 10 36 Crawlspace 5 18

5.3.4 Heat Recovery – A heat recovery ventilator (HRV) or energy recovery ventilator

(ERV) shall be used to reduce the energy required to heat or cool ventilation air. The HRV or ERV shall have a minimum sensible recovery efficiency of at least 65% at 00C when tested in accordance with CAN/CSA C439-00 (R2005)

Standard Laboratory Methods of Test for Rating the Performance of

Heat/Energy-Recovery Ventilators or JIS B8628. The Home Ventilating Institute

must certify HRVs and ERVs manufactured in North America.

Commentary

HRVs and ERVs can be traded for non-heat or energy recovery units through the Performance Path (see Clause 3.1 for details).

It is recommended that ERVs be used in thermal zone VI, moisture zone E.

5.3.5 Ventilation Controls – All ventilation systems shall be equipped with controls

that allow variable speed operation and for the system to be switched on and off.

5.3.6 Ductwork Design – Where installed, all HRVs and ERVs shall be located so that the ductwork carrying outdoor air between the HRV or ERV and outdoor supply and exhaust hoods shall minimize the length, diameter and the number of elbows in accordance with the tables in Appendix F.

It is recommended that all HRV and/or ERV ducting be smooth ducting where possible. Smooth ducting requires less fan energy than flexible ducting.

5.3.7 Sealing Ductwork – All ductwork in the ventilation system shall be sealed at all

joints, seams and penetrations with a durable metal foil tape or water-based liquid sealer.

5.3.8 Preventing Condensation – All ductwork that connects an HRV or ERV to the

outdoors or any ductwork that runs through unconditioned space shall have. • Insulation that provides a U-value of 0.74 (RSI 1.2) or better; and

• Be covered on the exterior with a continuous vapour barrier sealed at all joints and penetrations

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5.3.9 Verification – The installer of the mechanical ventilation system shall verify that

it has been installed and operates in accordance with the design of the Super E® Design Professional and the requirements of Clauses 5.3.1 to 5.3.8 and that the installed system has been designed in accordance with HRAI approved practices.

Commentary

The installer must signify compliance with this requirement by completing the appropriate section of the builder testimonial and submitting an installation balancing report.

5.4 Fireplaces, Stoves and Masonry Heaters

5.4.1 Gas Fireplaces – Gas fireplaces must be either direct-vent (sealed) and top- or

rear-vented or power-vented and shall be capable of positive shutdown in the case of venting system blockage. Gas fireplaces shall be installed without openable doors.

Commentary

The requirement for non-openable doors reduces the possibility of the fireplace becoming susceptible to combustion spillage.

5.4.2 Wood Fireplaces and Stoves – All Canadian-supplied fireplaces, wood stoves

and pellet stoves must be certified as meeting either CSA-B145.1-00

Performance Testing of Solid-Fuel Burning Heating Appliances, or the U.S.

Environmental Protection Agency (EPA) wood-burning appliance standards (1990), 40 CFR Part 60.

Commentary

There are no Canadian standards for measuring the combustion efficiency of wood fireplaces and stoves. The CSA International and EPA standards are emissions testing procedures that specify maximum levels of flue gas emissions. Not surprisingly, wood-burning equipment that produce low flue gas emissions also burn more efficiently. Site-built fireplaces, with the exception of masonry heaters (discussed in Clause 5.4.3 below), are not permitted in Super E® houses unless it can be demonstrated that they are not susceptible to combustion spillage.

5.4.3 Masonry Heaters – Masonry heaters shall comply with the requirements

specified in the Canadian R-2000 Procedures Manual.

Commentary

Masonry heaters are designed to burn a load of solid fuel mixed with an adequate amount of air rapidly at high temperatures, to store heat in the mass of the heater, and to then gradually release the stored heat. They should not be confused with conventional fireplaces. Builders should confirm with their warranty provider and the local authority having jurisdiction for building regulations whether they accept masonry heaters.

5.5 Carbon Monoxide Detectors – A carbon monoxide detector shall be installed in

houses containing either combustion appliances or attached garages. The detector shall conform to CAN/CGA-6.19-01 (R2006) Residential Carbon Monoxide Alarming

Devices or an equivalent Japanese standard.

Commentary

This requirement addresses concerns about combustion spillage, particularly possible spillage in later years as combustion equipment ages. Attached garages are a concern because hazardous levels of carbon monoxide can migrate into the house even if the garage door is open to the outdoors.

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5.6 Ducts Carrying Outdoor Air – Ducts that carry outdoor air through heated space shall

be covered with insulation that has a U-value of 2.0 (RSI 0.5) or better and a sealed air-vapour barrier.

Commentary

This controls heat loss and condensation problems on any ductwork that carries outdoor air through a conditioned space. The insulation requirements of this requirement are consistent with CAN/CSA-F326-M91 Residential Mechanical Ventilation Systems.

5.7 Unvented Combustion Appliances – No unvented combustion appliances shall be

installed unless specific provision is made to exhaust the products of combustion to the outdoors.

This addresses the health, safety and indoor air quality concerns created by the operation of unvented combustion equipment. Unvented gas space heaters are not permitted. Interlocking the control for the exhaust fan over the gas cooker with the gas cooker control is suggested,

provided it meets the manufacturer’s installation requirements.

5.8 Commissioning of Mechanical Systems – All mechanical space heating, space

cooling, domestic hot water and ventilation equipment, including their controls, shall be set-up and calibrated to full working order in accordance with the manufacturer’s recommendations.

5.9 Operating and Maintenance Instructions – The builder shall provide information with

the space heating, space cooling, domestic hot water and ventilation equipment so that the occupants of the house can effectively operate and maintain them.

6 LIGHTING

6.1 Efficient Lighting – All fixed interior and outdoor lighting incorporated in Super E®

houses shall be either fluorescent or halogen types or equivalent.

Lighting systems should be installed with occupancy controls, timers and sensors to maximize energy efficiency.

7. HEALTHY HOUSING AND ENVIRONMENTAL FEATURES

7.1 Healthy Housing Options – At least four of the healthy housing options identified in the

Super E® Healthy Housing and Environmental Features Renewable Energy Pick-List (see Appendix A) shall be used.

Enhanced indoor air quality is a major feature of a Super E® House. It is strongly encouraged that efforts be made to maximize indoor air quality by using as many items from the ‘Healthy Housing and Environmental Features Renewable Energy Pick-List as possible.

7.2 Environmental Options – A total of at least three of the environmental features

identified in the Healthy Housing and Environmental Features Renewable Energy

Pick-Lists (see Appendix A) shall be used.

Environmental responsibility is a major feature of a Super E® House. It is strongly encouraged that efforts be made to minimize the environmental impact by using as many of the material conservation, advanced energy efficiency and renewable energy items from the ‘Healthy Housing and Environmental Features Pick-List’ as possible.

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7.3 Client Awareness – Prospective Super E®

clients shall be offered the opportunity to incorporate into their house all of the indoor air quality and environmental energy options listed in Appendix A.

To maximize indoor air quality for the clients and minimize the environmental impact of the dwelling, use all of the products and features listed in Appendix A.

7.4 Reputable Suppliers – Super E®

members shall source the indoor air quality options

and environmental features listed in Appendix A from reputable suppliers.

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Section C – Administration and Quality Assurance

8. CANADIAN CONTENT REQUIREMENTS

8.1 Point System – Points will be awarded for products and services supplied from

Canada as defined in Appendix C.

8.2 Minimum Canadian Content – A minimum of 285 points must be achieved when

calculated in accordance with the Canadian Content Worksheet.

8.3 Sourced Through The Canadian Member – The following house components must be

sourced through the Canadian member (and count towards the required 285 points): • The majority (60% minimum) of roof, wall and floor framing,

• The majority (60% minimum) of roof, wall and floor insulation, • The majority (60% minimum) of roof, wall and floor sheathing, and • The majority (60% minimum) of windows.

8.3.1 Variances – Variances may be granted for a percentage of units, on a sliding

scale, based upon the total number of Super E® Homes constructed in the previous year by the Canadian member, as per the following:

Annual Super E®

sales by Canadian member >30 units, up to 10% of houses can be exempt from this mandatory sourcing.

Annual Super E®

sales by Canadian member between 7 and 30 units, up to 30% of houses can be exempt from this mandatory sourcing.

Annual Super E®

sales by Canadian member <7 units, all houses can be exempt from this mandatory sourcing.

Commentary

Members are encouraged to supply Canadian products and services in excess of the minimum 285 points.

9. REGISTERING A SUPER E®_HOME

9.1 Forms and Other Information to be Submitted – Except where noted, the following

forms must be completed and submitted to the Super E® Office:

9.1.1 Notice of Intent – A Notice of Intent form (Appendix G) shall completed for

each dwelling or group of dwellings and submitted by the Canadian Super E® Member to the Super E® Office as early as possible during the planning stage. Upon receipt of the Notice of Intent, the Super E® Office will assign a unique number for each dwelling that shall be used in all subsequent forms and documentation submitted to the Super E® Office.

9.1.2 Design Summary – A Design Summary (Appendix H) form shall be completed

for all dwellings by a Super E® Design Professional and submitted to the Super E® Office prior to the start of construction.

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9.1.3 Request for Variance – Where the proposed building varies from the requirements

of the Japan Super E® Standard, a Request for Variance (Appendix I) form shall be completed and submitted to the Super E® Office at the earliest possible date. Members must provide a detailed explanation of why a Request for Variance is needed.Failure to do so may result in a dwelling that does not comply with the intent of the Japan Super E® Standard and therefore will not be eligible for official recognition.

9.1.4 Plans and Specifications – Where the Canadian and Japanese Super E®

Members have not previously completed together a minimum of three registered Super E® dwellings, a complete set of construction plans and specifications shall also be submitted to the Super E® Office along with the Design Summary form.

9.1.4.2 Ventilation system layout, plans and drawings must be submitted with the Design Summary Form

9.1.5 HOT2000 Input Files – Where the performance path is chosen to comply with

the Japan Super E® Standard (see Clause 3.1.2), a copy of the HOT2000 ‘Complete Report’ or the input file should be submitted to the Super E® Office along with the Design Summary form. Two HOT2000 files are required: the reference dwelling which uses the Super E® prescriptive requirements (see Clause 3.1.1) and the proposed design.

9.1.6 Builder Testimonial – Within 30 days after completion of each dwelling, the Canadian and Japanese Super E® Members shall complete a Builder

Testimonial (Appendix J) form and submit it to the Super E® Office.

9.1.7 Air Tightness Test Results – The results from the air tightness test shall be

submitted for each dwelling along with the Builder Testimonial form. This report must include all data points (minimum of 5) from the test, the correlation coefficient and the ‘n’ value.

9.1.8 Canadian Content Worksheet – A completed Canadian Content Worksheet

(Appendix C) shall be submitted for each dwelling along with the Builder

Testimonial Form.

9.1.9 Ventilation Commissioning – A ventilation commissioning report must be

submitted to the Super E® office, including details as shown on the Super E® Ventilation Commissioning Report template found in Appendix K.

Commentary

All forms referenced in this section can be obtained from the Super E® web site at http://www.super-e.com. The ventilation commissioning report form as provided by Super E® does not have to be used; however, the system installer must provide the same information. Refer to the flowchart ‘Steps to Register a Super E® Home’ (see Appendix F) for an overview of the process to be followed during the planning stage,

construction and upon completion of the dwelling. Refer to http://www.super-e.com for a linear flowchart.

9.2 Official Super E®_Recognition

9.2.1 Verification of Documentation – Upon receipt of the completed Super E® Notice of Intent, Request for Variance (if applicable), Design Summary and Builder Testimonial, the Super E® Office shall verify whether the technical and administrative requirements of the Japan Super E® Standard have been met and will notify the Canadian Super E® Member.

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9.2.2 Issuance of Super E®_{Certificate – Upon approval by Natural Resources}

Canada, the Super E® Office shall forward an official Certificate of House

Recognition to the Canadian Super E® Member. It shall be the responsibility of either the Canadian Super E® Member or their Japanese partner to forward the certificate along with a Super E® Homeowner’s Manual directly to the homeowner.

10. AUDIT AND QUALITY ASSURANCE

10.1 Inspections – An inspection of each dwelling shall be carried out by a knowledgeable

professional designated by the Japanese Super E® Member prior to the air tightness test to ensure that the dwelling has been constructed in accordance with the Japan Super E®

Standard. At least two inspections shall be carried out prior to the air tightness test where

the Canadian and Japanese Super E® Members have not previously completed together a minimum of three registered Super E® dwellings.

Although the inspector can be an employee of the Japanese Super E® Member, an inspection by an independent third party familiar with the Japan Super E® Standard is recommended to enhance quality control and the credibility of the inspection. Photo documentation is strongly recommended.

10.2 Site Visits – Each Super E®

dwelling may be subject to an independent site visit at any stage of construction or upon completion by the Super E® Office or its designate.

10.3 Audit of Participants – The Super E®

Office or its designate may carry out random audits of the work of all participants to confirm that each meets the requirements of the program.

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Glossary

ASHRAE – American Society of Heating, Refrigerating and Air-Conditioning Engineers ASTM – American Society of Testing Materials

Canadian Expert Affiliate – A Canadian company that is a member of the Japan Super E®

House Program and provides a package of building products, services and expertise to a Japanese builder.

CGSB – Canadian General Standards Board COP – Co-efficient of performance

CSA – Canadian Standards Association ECM – Electrically Commutated Motor

Effective U-value – The actual rate of heat transfer through a building element that considers the

negative impact of thermal bridges and the positive effect of interior and exterior air films. The effective U-value of a building element is typically lower than the nominal U-value due to the impact of thermal bridges caused mostly by framing materials.

Exposed Element – An element of a house that encloses heated space and is:

• Exposed directly to the outdoor air (e.g. wall, window)

• Exposed indirectly to the outdoor air (e.g. a suspended floor over a ventilated void or

unheated, unventilated void); or

• In contact with the ground (e.g. floor, basement)

HRAI – Heating, Refrigerating and Air-conditioning Institute of Canada IGMA – Insulated Glass Manufacturers Alliance

ISO – International Organization for Standardization

Licensed Super E® Member – A builder who has successfully built one Super E®

House and has a valid Super E® Builder Licensing Agreement with Natural Resources Canada.

Nominal U-value – The approximate rate of heat transfer through a building element based only

on the amount of insulation in that element. Although less accurate than the effective U-value, the nominal U-value is much quicker and simpler to calculate.

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Registered Super E® House – A house constructed by a Licensed Super E®

Member that:

• Meets the Japanese Super E®

Standard;

• Successfully completes the Super E®

quality assurance procedures (i.e. a plans evaluation, construction and mechanical system inspection, and an air leakage test); and

• Has been issued a certificate by the Super E®

Office

RSI – The metric measurement of thermal resistance that is the inverse of U-value (m2

C/W) (i.e. U-value = 1 / RSI )

Super E®_{Design Professional – An individual whose qualifications are formally recognized by} the Super E® Program in one or more of the following categories: Super E® Plans Evaluator; Super E® Mechanical System Designer, Super E® Inspector; Super E® Airtightness Tester.

Super E® Designate Member – An applicant to the Super E® House Program who has

submitted to the Super E® office all required documentation to become a member, and whose application has been approved by Natural Resources Canada, but who has not successfully built and registered a Super E® House.

Super E® Office – An entity that has been duly contracted by Natural Resources Canada to

perform administration and management tasks related to the operation of the Super E® House Program; such duties include tasks outlined in this Standard, as well as other tasks assigned from time to time by Natural Resources Canada.

U-value – A measure of how much heat will pass through one square metre of a building element

when the air temperatures differ on either side by one degree Celsius. U-values are expressed in Watts per square metre per degree of temperature difference (W/m2K).

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Appendix A –

Healthy Housing and Environmental

Features Pick-List

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A. HEALTHY HOUSING

Each Super E® House shall incorporate a minimum of four measures to enhance indoor air quality from the following 12 categories:

1. Carpeting – Except as noted, carpeting used in the house shall meet either of the

following criteria:

a) The carpet shall be labeled under the Canadian Carpet Institute’s Green Label Program or an equivalent Japanese labeling program; or

b) Carpet that does not meet the above labeling requirement shall cover no more than 50% on the interior floor area.

Commentary

In this case, the interior floor area does not include the basement/crawlspace area.

The following floor coverings are exempt provided they are not glued to the floor and do not have underpads: wool area rugs; cotton area rugs; carpet that has latex-free backing. Canadian members should be aware that all installed carpeting must have at least a Star 2 rating under the Sick House Syndrome Law.

2. Air filtration – One of the following shall be installed:

a) A medium-efficiency air filter with a minimum 10% ASHRAE average dust spot efficiency where air-circulating heating, cooling or heat recovery ventilation systems are used; or

b) An electronic air cleaner permanently installed in the forced-air system ductwork; or c) An air filtration system in the forced-air system ductwork that is capable of removing

gaseous contaminants from the air (e.g. activated carbon, catalytic air cleaners, etc.).

3. Dust control – Install a central vacuum system vented to the outdoors. 4. Paint and varnishes – Choose one of the following:

a) All liquid coatings used indoors, including wood floors, shall be water-based, interior-type or meet Canada’s Environmental Choice Program standards or the standards of an equivalent Japanese labeling program; or

b) All wood floors shall be factory pre-finished to reduce off gassing after installation.

5. Flooring adhesives – All finish flooring adhesives shall be water dispersion, low-toxicity

formulation or pre-adhesive types

6. Vinyl flooring – All vinyl flooring shall be either linoleum or synthetic vinyl tile. Sheet

vinyl flooring shall not be used.

7. Sub-slab depressurization system – Install an active sub-slab depressurization

system to control the entry of radon and soil gases into the house.

8. Indoor moisture control – Choose one of the following options:

a) Provide insulated spacer bars for all windows to reduce window condensation and permit higher relative humidity levels to be maintained.

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Commentary

The area around the spacer bars are usually the coldest surface on the building fabric. Reduced condensation also minimizes the potential for mould development.

b) Keep basements drier and less prone to mould development by using: • Waterproofing rather than damp-proofing; or

• A free draining layer

c) Include a moisture barrier between the interior basement wall insulation and the foundation wall to protect the insulation and wood framing against moisture damage and mould development.

9. Moisture monitoring – Choose one of the following options:

a) Install a digital hygrometer in a central area of the dwelling to enable the occupants to monitor indoor relative humidity levels; or

b) Install a monitoring system to facilitate the detection of excessive moisture build-up within the building fabric; or

c) Install a monitoring system to facilitate the detection of excessive moisture build-up within the crawlspace surface.