Right House Designer Workshop
Compliance with Clause H1
    Housing and Small Buildings
Brief Right House Overview




                             Page 2
Your Independent Experts in Home Energy
             Technologies


   We… 1. Develop Custom Solutions
       2. Supply Pr...
The Challenge
               There are too many Issues and Choices

                                                      ...
The Right House Daisy




                        Page 5
Flexibility and Quality Products
  •   Skystream                •   Rinnai              •   Mitsubishi
  •   WhisperGen   ...
The Difference is in our
Approach and Process

      Planning and Construction Stages
  1   Sketches/Ideas
  2   Develop C...
Compliance with Clause H1




                            Page 8
The new NZS4218:2009


 •NZS4218:2004 remains the Acceptable Solution
  until NZBC Clause H1 cites the 2009 version

 •The...
These rules can be used to show compliance for …




► All Housing &
► All buildings smaller than 300m2
  (H1/AS1-2.1.1)

...
New Zealand
   Climate Zones




Reproduced from “NZS 4218: 2004 Energy
efficiency - Small building envelope”
with permiss...
4 Compliance Paths
                               H1



   Acceptable Solutions                  Verification Methods
    ...
4 Compliance Paths
                                    H1



       Acceptable Solutions                    Verification M...
4 Compliance Paths
                                             H1



         Acceptable Solutions                       ...
1. NZS4218 Schedule Method – Z2
•   To comply:
    o   R-values of ALL components must meet Schedule minimums (NZS4218-3.1...
1. NZS4218 Schedule Method – Z2
•   To comply:
    o   R-values of ALL components must meet Schedule minimums (NZS4218-3.1...
Construction R-values
             R-
 • NZS4214
 • BRANZ House Insulation Guide
 • Design Navigator (www.design-navigator...
1. NZS4218 Schedule Method
             IF:
             Glazing ≥ 30%            (NZS4218-Tbl 1 (Header))
             …o...
2. NZS4218 Calculation Method                                                                                             ...
2. NZS4218 Calculation Method                                                                                             ...
2. NZS4218 Calculation Method (Z2) - Glazing ≤30%                                              Rp   Rr



•    Proposed bu...
2. NZS4218 Calculation Method (Z2) - Glazing >30%                                                      Rp     Rr


•    Pr...
2. NZS4218:2009 Calculation Method (Z2) - Glazing ≤30%                                       Rp   Rr



•    Proposed buil...
2. NZS4218:2009 Calculation Method (Z2) - Glazing >30%                                                 Rp     Rr


•    Pr...
2. NZS4218 Calculation Method                               Rp   Rr




              IF:
              Glazing ≥ 50%   (H...
3. NZS4218 Modelling Method                                                  Ep   Er



   Heating Energy Thermal Simulati...
4. Building Performance Index




      The Building Performance Index (BPI)
          does not exceed 1.55 (H1.3.2E)
  Ap...
Solid Walls (Z2)
• Conditions:
   o   Insulation is placed on the exterior (H1/AS1-Tbl2(12) & H1/AS1-Tbl3(11))
   o   For ...
High Thermal Mass (Z2) - NZS4218:2009
 Solid Walls (Z2)

 “High Thermal Mass”: 215kg/m²




                              ...
Mixed Walls (Z1)
 Solid Constructions (all zones) -
NZS4218:2009

 Schedule Method:
 • Roof: R-3.5, Floor: R-1.5
 • Walls ...
Heated Elements
1. Heated elements must meet the R-values in the Table 3 (NZS4218-3.1.5)
2. Rin/Rout < 0.1 (H1/AS1-Tbl3)

...
E3 Requirements

R-values for walls, roofs and ceilings shall be no less than:

a) For light timber frame wall or other fr...
FAQs
•All areas are measured on the inside
•Solid sandwich constructions are OK for solid wall
 concession (H1/AS1-Tbl 2a(...
Replacements, Alterations & Additions
                      Codewords Article 32 (Oct 2008)

• Repairs and Replacements:
 ...
NZS4218:2009 Appendix D &Alterations
 Replacements, Alterations - Additions
Does not apply to buildings built 2007 or late...
NZS4218:2009 Appendix D &Examples
 Replacements, Alterations - Additions

Example                                 Solution...
NZS4218:2009 Appendix D &Examples
 Replacements, Alterations - Additions
Example                                   Solutio...
Step-by-
 Step-by-step
1.   Check whether Schedule Method is permitted:
     a.   if Skylights ≥ 1.2m Calculation Method
 ...
Page 55
Page 56
Clause H1 Compliance Report




                              Page 57
Large Commercial Buildings (>300m²)
                           (>300m²
                                 H1 (Large Commerci...
Part 1: Schedule Thermal Building Envelope




                                     Page 59
Part 2: Schedule Lighting Power Density




                                  Page 60
Create a Point of Difference

                                       cost-
   Right House is the easiest and most cost-eff...
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RH Workshop H1

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Transcript of "RH Workshop H1"

  1. 1. Right House Designer Workshop Compliance with Clause H1 Housing and Small Buildings
  2. 2. Brief Right House Overview Page 2
  3. 3. Your Independent Experts in Home Energy Technologies We… 1. Develop Custom Solutions 2. Supply Products 3. and Install
  4. 4. The Challenge There are too many Issues and Choices Climate Regulation Change and Changes Peak Oil Certification and Quality Control Cost of Energy and heat batts? batts? passive Building pumps? design? thermal curtains? heat recovery ventilation? solar water? Myriads of gas? Return on Products under floor Investment and Systems heating? to Choose double from glazing? air conditioning? wood burner? Page 4
  5. 5. The Right House Daisy Page 5
  6. 6. Flexibility and Quality Products • Skystream • Rinnai • Mitsubishi • WhisperGen • Methven • Panasonic • Cromptons-Sylvania • Tasman Insulation • Fujitsu • Eurovision • Latitude • Daikin • ASL (Fairview & Elite) • Terra Lana • Nobo • Autex • Skypower • Poly Gold • Warmfloor • EXPOL • Wagner/Power Tech • Eco-Block • Rheem • De Longi • Fuji Air • Clean-Air/Avon-aire • Lossnay • … and more Page 6
  7. 7. The Difference is in our Approach and Process Planning and Construction Stages 1 Sketches/Ideas 2 Develop Concept Plans 3 Finalise Plans 4 Create Specifications 5 Submit for Building Consent 6 Implement Alterations 7 Site Project Management 8 Sign-off and Hand-over Right House supplies and installs products working with the builder First meeting Customer between Customer Building Building Right House agrees on client, Your Home Your Home agrees on analyses and solution Guide Guide designer and solution recommends Specification Specification Right House estimate solutions & Quote & Quote Planning Planning Solution Acceptance Acceptance Your Home Solution Custom Your Home Estimate Custom Estimate Solution Customer handover and Guide Guide Solution Report customer care Report Living in Living in Your Home Your Home Commissioning Commissioning Guide Guide Certificate Certificate Page 7
  8. 8. Compliance with Clause H1 Page 8
  9. 9. The new NZS4218:2009 •NZS4218:2004 remains the Acceptable Solution until NZBC Clause H1 cites the 2009 version •The 2009 version can be used as Alternative Solution, but the BCA is not required to accept it Page 9
  10. 10. These rules can be used to show compliance for … ► All Housing & ► All buildings smaller than 300m2 (H1/AS1-2.1.1) Page 10
  11. 11. New Zealand Climate Zones Reproduced from “NZS 4218: 2004 Energy efficiency - Small building envelope” with permission from Standards New Zealand. AS/NZS 4218: 2004 can be purchased from Standards NZ at www.standards.co.nz Page 11
  12. 12. 4 Compliance Paths H1 Acceptable Solutions Verification Methods AS1 VM1 NZS4218 NZS4218 NZS4218 ALF Schedule Calculation Modelling BPI Rp Rr Ep Er Page 12
  13. 13. 4 Compliance Paths H1 Acceptable Solutions Verification Methods AS1 VM1 IF: Glazing < 30% IF: Any design Any housing ESW Windows < 30% Glazing < 50% Skylights < 1.2m2 NZS4218 NZS4218 NZS4218 NZS4218 NZS4218 NZS4218 BPI BPI Schedule Schedule Calculation Calculation Modelling Modelling Rp Rr Ep Er Page 13
  14. 14. 4 Compliance Paths H1 Acceptable Solutions Verification Methods AS1 VM1 IF: IF: Glazing < 30% Glazing < 30% ESW Windows < 30% IF: IF: Any design Any housing Skylights < 1.5m²30% ESW Windows < or 1.5% 2 Glazing < 50% Glazing < 40% decor. glaz<& louvres < 3m² Skylights 1.2m NZS4218 NZS4218 NZS4218 NZS4218 NZS4218 NZS4218 BPI BPI Schedule Schedule Calculation Calculation Modelling Modelling Rp Rr Ep Er Page 14
  15. 15. 1. NZS4218 Schedule Method – Z2 • To comply: o R-values of ALL components must meet Schedule minimums (NZS4218-3.1.1) • Notes o All R-values are “construction” R-values (H1/AS1-2.3) o Window R-values include frames (H1/AS1-Tbl1(5)) o No R-value requirements for opaque doors (H1/AS1-Tbl1(6)) o Roof R-value must take into account non-CA downlights (BRANZ HIG p 25) o All slab floors and suspended floors with continuous perimeter and foil meet R-1.3 target (H1/AS1-Tbl1(4)) o Traditional leadlight glass has R-0.26 if area is no greater than 2.6m2 (H1/AS1-Tbl1(8)) o Heated roof, walls and floors must meet R-values from Table 3 (NZS4218-3.1.5) Page 17
  16. 16. 1. NZS4218 Schedule Method – Z2 • To comply: o R-values of ALL components must meet Schedule minimums (NZS4218-3.1.1) • Notes o All R-values are “construction” R-values (H1/AS1-2.3) o All slab floors and suspended floors with continuous perimeter and foil meet R- 1.3 target (H1/AS1-Tbl1(4)) o Roof R-value must take into account non-CA downlights (NZS4246) Page 18
  17. 17. Construction R-values R- • NZS4214 • BRANZ House Insulation Guide • Design Navigator (www.design-navigator.co.nz) Page 21
  18. 18. 1. NZS4218 Schedule Method IF: Glazing ≥ 30% (NZS4218-Tbl 1 (Header)) …or ESW Windows ≥ 30% (NZS4218-Tbl 1(3)) ...or Skylights ≥ 1.2m2 (NZS4218-Tbl 1(7)) …or IF the building fails to meet the Schedule Method R-value targets ⇓ CALCULATION METHOD Page 22
  19. 19. 2. NZS4218 Calculation Method Rp Rr The Heat Loss of the proposed building is not greater than the heat loss of the reference building. (NZS4218-3.2.2) AFloor AWalls ARoof AGlazing HeatLoss = + + + ... RFloor RWalls RRoof RGlazing AF ( prop ) AW ( prop ) AR ( prop ) AG ( prop ) AF ( ref ) AW ( ref ) AR ( ref ) AG ( ref ) HL prop = ... HLref = ... 1. RF ( prop ) + RW ( prop ) + RR ( prop ) + RG ( prop ) ≤ RF ( ref ) + RW ( ref ) + RR ( ref ) + RG ( ref ) 2. … and any individual R-value at least 60% of the Schedule value! Note: Clear double glazing can be replaced with clear single (NZS4218-3.2.6) Page 23
  20. 20. 2. NZS4218 Calculation Method Rp Rr The Heat Loss of the proposed building is not greater than the heat loss of the reference building. (NZS4218-3.2.2) AFloor AWalls ARoof AGlazing HeatLoss = + + + ... RFloor RWalls RRoof RGlazing AF ( prop ) AW ( prop ) AR ( prop ) AG ( prop ) AF ( ref ) AW ( ref ) AR ( ref ) AG ( ref ) HL prop = ... HLref = ... 1. RF ( prop ) + RW ( prop ) + RR ( prop ) + RG ( prop ) ≤ RF ( ref ) + RW ( ref ) + RR ( ref ) + RG ( ref ) 2. … and any individual R-value at least 60% of the Schedule value! 50% Note: Clear double glazing can be replaced with clear single (NZS4218-3.2.6) Page 24
  21. 21. 2. NZS4218 Calculation Method (Z2) - Glazing ≤30% Rp Rr • Proposed building: actual areas and R-values (NZS4218-3.2.4) • Reference building: 30% glazing and 70% wall (H1/AS1-1.1.3) Example o Floor: 150 m2 o Total wall: 200 m2 (Net wall: 144 m2) o Windows: 56 m2 (28%) o Roof: 150 m2 o Skylight: 0 m2 Replacement Table 1 Proposed Reference Mimimum Areaprop Rproposed Arearef Rreference 60% Rule (Zone 1) Roof 150 m2 Rprop 150 m2 R-2.9 R-1.7 Wall 144 m2 Rprop 140 m2 R-1.9 R-1.1 Floor 150 m2 Rprop 150 m2 R-1.3 R-0.8 Glazing 56 m2 Rprop 60 m2 R-0.26 R-0.15 Skylights R-0.26 R-0.15 Page 26
  22. 22. 2. NZS4218 Calculation Method (Z2) - Glazing >30% Rp Rr • Proposed building: actual areas and R-values (NZS4218-3.2.4) • Reference building: actual areas but different R-values for the first 30% of glazing and the rest (H1/AS1-1.1.3) • Example: o Floor: 150 m2 o Total wall: 200 m2 (Net wall: 132 m2) o Windows: 68 m2 (34%) o Roof: 150 m2 o Skylight: 0 m2 Replacement Table 1 Proposed Reference Mimimum Areaprop Rprop Arearef Rreference 60% Rule (Zone 2) Roof 150 m2 Rprop 150 m2 R-2.9 R-1.7 Wall 132 m2 Rprop 132 m2 R-1.9 R-1.1 Rprop 150 m2 R-1.3 R-0.8 Replacement Floor 150 m2 Table 4 Glazing first 30% 68 m2 Rprop 60 m2 R-0.26 R-0.15 > 30% 8 m2 R-0.31 R-0.19 Skylights R-0.31 R-0.19 Page 29
  23. 23. 2. NZS4218:2009 Calculation Method (Z2) - Glazing ≤30% Rp Rr • Proposed building: actual areas and R-values (NZS4218-3.2.4) • Reference building: 30% glazing and 70% wall (H1/AS1-1.1.3) Example o Floor: 150 m2 o Total wall: 200 m2 (Net wall: 144 m2) o Windows: 56 m2 (28%) o Roof: 150 m2 o Skylight: 0 m2 Replacement Table 1 Proposed Reference Mimimum Areaprop Rproposed Arearef Rreference 50% Rule 60% (Zone 2) Roof 150 m2 Rprop 150 m2 R-2.9 R-1.7 Wall 144 m2 Rprop 140 m2 R-1.9 R-1.1 Floor 150 m2 Rprop 150 m2 R-1.3 R-0.8 Glazing 56 m2 Rprop 60 m2 R-0.26 R-0.15 Skylights R-2.9 R-0.26 R-0.15 Page 32
  24. 24. 2. NZS4218:2009 Calculation Method (Z2) - Glazing >30% Rp Rr • Proposed building: actual areas and R-values (NZS4218-3.2.4) • Reference building: actual areas but different R-values for the first 30% of glazing and the rest (H1/AS1-1.1.3) • Example: o Floor: 150 m2 o Total wall: 200 m2 (Net wall: 132 m2) o Windows: 68 m2 (34%) o Roof: 150 m2 o Skylight: 0 m2 Replacement Table 1 Proposed Reference Mimimum Areaprop Rprop Arearef Rreference 50% Rule 60% (Zone 2) Roof 150 m2 Rprop 150 m2 R-2.9 R-1.7 Wall 132 m2 Rprop 132 m2 R-1.9 R-1.1 Rprop 150 m2 R-1.3 R-0.8 Replacement Floor 150 m2 Table 4 Glazing first 30% 68 m2 Rprop 60 m2 R-0.26 R-0.15 > 30% 8 m2 RR-0.31 -0.4 R-0.19 Skylights RR-0.31 -2.9 R-0.19 Page 35
  25. 25. 2. NZS4218 Calculation Method Rp Rr IF: Glazing ≥ 50% (H1/AS1-Tbl 4(3)) …or IF the building fails the Calculation Method heat loss targets ⇓ MODELLING METHOD or BUILDING PERFORMANCE INDEX (BPI) Page 37
  26. 26. 3. NZS4218 Modelling Method Ep Er Heating Energy Thermal Simulations: • Insulation, Solar gains, Thermal mass, Internal gains, Infiltration, Heating schedules, etc. Heating Energyproposed proposed ≤ Heating Energyreference reference Page 38
  27. 27. 4. Building Performance Index The Building Performance Index (BPI) does not exceed 1.55 (H1.3.2E) Applies only to housing (H1.3.2E) Page 39
  28. 28. Solid Walls (Z2) • Conditions: o Insulation is placed on the exterior (H1/AS1-Tbl2(12) & H1/AS1-Tbl3(11)) o For “multiple” wall constructions use corresponding wall R-value targets and “worst case” R-value targets for other components o For solid timber walls 85% of internal walls must be solid timber (H1/AS1-Tbl2(11)) Concessional R-values Schedule or Calculation or Modelling Method Only Schedule Method (H1/AS1-Tbl2&3(9)) Page 42
  29. 29. High Thermal Mass (Z2) - NZS4218:2009 Solid Walls (Z2) “High Thermal Mass”: 215kg/m² Page 43
  30. 30. Mixed Walls (Z1) Solid Constructions (all zones) - NZS4218:2009 Schedule Method: • Roof: R-3.5, Floor: R-1.5 • Walls and Windows according to corresponding tables Calculation Method: • Calculate heat loss for a light weight reference building: HLLW • Calculate heat loss for a high thermal mass reference building: HLHTM • Calculate proportions of light and high thermal mass walls: pLW & pHTM • Reference Building Heat Loss: HLref = pLW x HLLW + pHTM x HLHTM Page 46
  31. 31. Heated Elements 1. Heated elements must meet the R-values in the Table 3 (NZS4218-3.1.5) 2. Rin/Rout < 0.1 (H1/AS1-Tbl3) Note: Carpets and other floor covering are not included (H1/AS1-Tbl3) Page 47
  32. 32. E3 Requirements R-values for walls, roofs and ceilings shall be no less than: a) For light timber frame wall or other framed wall constructions with cavities, 1.5. b) For single skin normal weight masonry based wall construction without a cavity, 0.6. c) For solid timber wall systems no less than 60 mm thick, 0.6. d) For roof or ceilings of any construction, 1.5. (H1/AS1-2.1.4 (Comment 2) & E3/AS1-1.1.1) Page 48
  33. 33. FAQs •All areas are measured on the inside •Solid sandwich constructions are OK for solid wall concession (H1/AS1-Tbl 2a(12)) •Opaque doors are ignored in the Schedule Method. In the Calculation Method up to 3m2 are ignored, greater than 3m2 are treated as walls (Garages!) (H1/AS1-Tbl 1(6) & H1/AS1-Tbl 4(4)) •Attached dwellings can be assessed as one dwelling with no heat loss through joint walls. If assessed individually joint walls must meet R-value targets. (H1/AS1- 2.1.2) Page 49
  34. 34. Replacements, Alterations & Additions Codewords Article 32 (Oct 2008) • Repairs and Replacements: o “like for like” o Timber framed SG windows may need replacements with IGU or tradeoffs! o Rule of thumb: 2% of total area of thermal envelope and performance no less than 20% worse than original o Allowance for air tightness! • Alterations and Additions: o Only consider the new building part o 30% rules for compliance method applied to addition only o Existing building upgrade only required if it “performs less energy efficiently because of the addition or extension”=> upgrade to previous level o Schedule and Calculation Methods “as if addition is an entire building” o Modelling Method: include complete building, but keep R-values of existing part of the building Page 50
  35. 35. NZS4218:2009 Appendix D &Alterations Replacements, Alterations - Additions Does not apply to buildings built 2007 or later •Conditions and Methods apply to alteration only (D1) or … •to the whole building using the following guides (D2&3) o Schedule Method: – Limits: (D2.1) Total building: 30% limit (no ESW limit!) Total building: 1.5m² or 1.5% skylight Extension only: 3m² decorative glazing – Only alteration needs to meet targets (D2.2) o Calculation Method: – Limits: Total building: 40% limit (D3.1) – Only alteration needs to meet targets (D3.2) – Proposed building has reference building R-values in the existing parts (D3.3) Page 51
  36. 36. NZS4218:2009 Appendix D &Examples Replacements, Alterations - Additions Example Solution Insert window in wall (total glazing <30%) Window must have R-0.26 Add extension with more than 30% D1.2: Too much glazing in glazing alteration for Schedule Total new building < 30% glazing But: D2: Schedule permitted for total building, but only alteration needs to meet Schedule Method As before but use single glazing Fails Schedule Method, but can use Calculation Method either on extension or whole building Page 52
  37. 37. NZS4218:2009 Appendix D &Examples Replacements, Alterations - Additions Example Solution Add extension with more than 42% D1.2: Too much glazing in extension for Schedule or glazing, Calculation Method Total new building 35% glazing, But Existing windows single glazed (R- D3: Calculation Method permitted for whole building 0.15) and walls are uninsulated Use reference building R-values for existing elements in Existing floor has R-2.2 proposed building heatloss and use R-2.2 for floor Areasproposed Rproposed Areasreference Rreference (Zone 1) Existing Roof as existing R-2.9 as existing R-2.9 New Roof as proposed Rprop as proposed R-2.9 Existing Wall as existing R-1.9 70% R-1.9 New Wall as proposed Rprop Existing Floor as existing R-2.2 as existing R-1.3 New Floor as proposed Rprop as proposed R-1.3 Existing Windows as existing R-0.26 30% R-0.26 New Windows as proposed Rprop Page 53
  38. 38. Step-by- Step-by-step 1. Check whether Schedule Method is permitted: a. if Skylights ≥ 1.2m Calculation Method b. if Glazing ≥ 30% Calculation Method c. if ESW Windows ≥ 30% Calculation Method 2. Choose correct Schedule Table: a. Climate Zone & Construction Type 3. if all proposed R-values ≥ Schedule Table check 9. …otherwise 4. Check whether Calculation Method is permitted: a. if Glazing ≥ 50% Modelling Method or BPI (ALF) 5. Calculate correct reference building areas (70/30% rules) 6. Calculate Heat Losses for proposed and reference building 7. Check Calculation Method Compliance: a. if Proposed HL ≥ reference HL Modelling Method or BPI (ALF) b. if any R-values < 60% of reference R-values Modelling Method or BPI (ALF) …otherwise check 9. 8. Use Modelling Method or BPI (ALF) 9. ALWAYS check: a. Heated component requirements b. E3 requirements Page 54
  39. 39. Page 55
  40. 40. Page 56
  41. 41. Clause H1 Compliance Report Page 57
  42. 42. Large Commercial Buildings (>300m²) (>300m² H1 (Large Commercial) Acceptable Solutions Verification Methods AS1 VM1 IF: WWR ≤ 50% NZS4243 NZS4243 NZS4243 Schedule Calculation Modelling R-values: Part 1: 4.2 R-values: Part 1: 4.2 Heat Loss: Part 1: 4.3 Heat Loss: Part 1: 4.3 Lighting: Part 2: 3.3 Lighting: Part 2: 3.3 Lighting: Part 2: 3.4 Lighting: Part 2: 3.4 Ep Er Rp Rr Page 58
  43. 43. Part 1: Schedule Thermal Building Envelope Page 59
  44. 44. Part 2: Schedule Lighting Power Density Page 60
  45. 45. Create a Point of Difference cost- Right House is the easiest and most cost-effective way to create a well researched energy and comfort solution. Treat your project’s future energy running costs and your client's living comfort with the same importance as its structural performance. Right House web page featuring our design partners Page 61

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