NZBC  Clause H1 Overview Robert Campion Architectural Profiles Ltd (APL) October 2007
energy efficiency <ul><li>“ Biggest energy efficiency steps  </li></ul><ul><li>in 30 years” </li></ul>
nzbc clause H1
energy efficiency <ul><li>The changes; </li></ul><ul><ul><li>tougher insulation requirements </li></ul></ul><ul><ul><li>do...
heat loss <ul><li>un-insulated house </li></ul>windows =12% walls =24% roof = 42% floor =10%
nzbc clause H1 <ul><li>Generally based on NZS 4218:2004 </li></ul><ul><li>but… </li></ul><ul><li>with increased R-values <...
climate zones  Zone1 Auckland, North Zone 2 Balance North  Island, except  Central Plateau Zone 3 South Island &  Central ...
new R values
new R values <ul><li>non-solid construction </li></ul>roof ; z1 = R2.9 z2 = R2.9 z3 = R3.3 floor ; z1 = R1.3 z2 = R1.3 z3 ...
nzbc clause H1 <ul><li>3 Methods of Compliance… </li></ul><ul><li>Schedule </li></ul><ul><li>Used when <30% of wall area i...
schedule method
floor <ul><li>un-insulated house </li></ul>floor = 10% z1 = R1.3 z2 = R1.3 z3 = R1.3
floor insulated timber floor draped foil 100mm sag carpet = R1.5 no carpet = R1.1 Pic Courtesy of BRANZ - BRANZ House Insu...
floor concrete floor slab/perim. ratio = 1.5 insulated / no TB = R1.3 insulated with TB = R1.5 Pic Courtesy of BRANZ - Bui...
roof <ul><li>un-insulated house </li></ul>roof = 42% z1 = R2.9 z2 = R2.9 z3 = R3.3
roof concrete tile - truss blanket type timber battens z2 requirement = R2.9 insulation must meet R2.65 Pic Courtesy of BR...
walls <ul><li>un-insulated house </li></ul>walls = 24% z1 = R1.9 z2 = R1.9 z3 = R2.0
walls brick veneer blanket type 100 x 50 studs @ 600 z2 requirement = R1.9 insulation must meet R2.05 Pic Courtesy of BRAN...
walls stucco on cavity blanket type 100 x 50 studs @ 600 z2 requirement = R1.9 insulation must meet R2.15 Pic Courtesy of ...
walls stucco on cavity blanket type 100 x 50 studs @ 400 z2 requirement = R1.9 insulation must meet R2.3 Pic Courtesy of B...
windows <ul><li>un-insulated house </li></ul>windows =12%   z1 = R0.26   z2 = R0.26   z3 = R0.26
schedule method
wers table
calculation method
calculation method <ul><li>  Zone 2, 34.7% (45m 2 ) Glazed Area </li></ul><ul><li>HL Ref  = 38.9m2/0.26 + 6.1/0.31 </li></...
calculation method <ul><li>If window target =  169.3 … </li></ul><ul><li>Aluminium frame / single clear glass </li></ul><u...
calculation method <ul><li>If window target =  169.3 … </li></ul><ul><li>Aluminium frame / clear IGU </li></ul><ul><li>  R...
calculation method <ul><li>If window target =  169.3 … </li></ul><ul><li>Thermally broken frame/clear IGU </li></ul><ul><l...
modeling method <ul><li>Modeling Method </li></ul><ul><li>Designer contacts a specialist with the appropriate software to ...
modeling method
status  Zone 3 31 October 2007 Zone 2 30 June 2008 Zone 1 30 Sept 2008
thank you Refer to the  Third Edition of NZBC Clause H1 – Energy Efficiency  in conjunction with NZS 4218:2004 – Energy Ef...
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NZBC-H1_Overview-Oct07

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Rob Campion of APL gives an overview of the NZBC Clause H1 - Energy Efficiency

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NZBC-H1_Overview-Oct07

  1. 1. NZBC Clause H1 Overview Robert Campion Architectural Profiles Ltd (APL) October 2007
  2. 2. energy efficiency <ul><li>“ Biggest energy efficiency steps </li></ul><ul><li>in 30 years” </li></ul>
  3. 3. nzbc clause H1
  4. 4. energy efficiency <ul><li>The changes; </li></ul><ul><ul><li>tougher insulation requirements </li></ul></ul><ul><ul><li>domestic hot water systems </li></ul></ul><ul><ul><li>commercial lighting </li></ul></ul><ul><ul><li>commercial HVAC systems </li></ul></ul>
  5. 5. heat loss <ul><li>un-insulated house </li></ul>windows =12% walls =24% roof = 42% floor =10%
  6. 6. nzbc clause H1 <ul><li>Generally based on NZS 4218:2004 </li></ul><ul><li>but… </li></ul><ul><li>with increased R-values </li></ul><ul><li>Tables shown within H1 replace those used in NZS 4218 </li></ul>
  7. 7. climate zones Zone1 Auckland, North Zone 2 Balance North Island, except Central Plateau Zone 3 South Island & Central Plateau
  8. 8. new R values
  9. 9. new R values <ul><li>non-solid construction </li></ul>roof ; z1 = R2.9 z2 = R2.9 z3 = R3.3 floor ; z1 = R1.3 z2 = R1.3 z3 = R1.3 window ; z1 = 0.26 z2 = R0.26 z3 = R0.26 wall ; z1 = R1.9 z2 = R1.9 z3 = R2.0
  10. 10. nzbc clause H1 <ul><li>3 Methods of Compliance… </li></ul><ul><li>Schedule </li></ul><ul><li>Used when <30% of wall area is glazed </li></ul><ul><li>Calculation </li></ul><ul><li>Used when <50% of wall area is glazed </li></ul><ul><li>Modeling </li></ul><ul><li>Used when >50% of wall area is glazed </li></ul><ul><li>and complex design </li></ul>
  11. 11. schedule method
  12. 12. floor <ul><li>un-insulated house </li></ul>floor = 10% z1 = R1.3 z2 = R1.3 z3 = R1.3
  13. 13. floor insulated timber floor draped foil 100mm sag carpet = R1.5 no carpet = R1.1 Pic Courtesy of BRANZ - BRANZ House Insulation Guide
  14. 14. floor concrete floor slab/perim. ratio = 1.5 insulated / no TB = R1.3 insulated with TB = R1.5 Pic Courtesy of BRANZ - Build Magazine
  15. 15. roof <ul><li>un-insulated house </li></ul>roof = 42% z1 = R2.9 z2 = R2.9 z3 = R3.3
  16. 16. roof concrete tile - truss blanket type timber battens z2 requirement = R2.9 insulation must meet R2.65 Pic Courtesy of BRANZ - BRANZ House Insulation Guide
  17. 17. walls <ul><li>un-insulated house </li></ul>walls = 24% z1 = R1.9 z2 = R1.9 z3 = R2.0
  18. 18. walls brick veneer blanket type 100 x 50 studs @ 600 z2 requirement = R1.9 insulation must meet R2.05 Pic Courtesy of BRANZ - BRANZ House Insulation Guide
  19. 19. walls stucco on cavity blanket type 100 x 50 studs @ 600 z2 requirement = R1.9 insulation must meet R2.15 Pic Courtesy of BRANZ - BRANZ House Insulation Guide
  20. 20. walls stucco on cavity blanket type 100 x 50 studs @ 400 z2 requirement = R1.9 insulation must meet R2.3 Pic Courtesy of BRANZ - BRANZ House Insulation Guide
  21. 21. windows <ul><li>un-insulated house </li></ul>windows =12% z1 = R0.26 z2 = R0.26 z3 = R0.26
  22. 22. schedule method
  23. 23. wers table
  24. 24. calculation method
  25. 25. calculation method <ul><li> Zone 2, 34.7% (45m 2 ) Glazed Area </li></ul><ul><li>HL Ref = 38.9m2/0.26 + 6.1/0.31 </li></ul><ul><li> = 149.6 + 19.7 </li></ul><ul><li> = 169.3 m 2 o C/W </li></ul>
  26. 26. calculation method <ul><li>If window target = 169.3 … </li></ul><ul><li>Aluminium frame / single clear glass </li></ul><ul><li> R (Total) = 0.15 </li></ul><ul><li> 45m 2 @ 0.15 = 300 </li></ul><ul><li> ( 130.7 must be made up elsewhere) </li></ul><ul><li>equates to doubling all other values </li></ul>
  27. 27. calculation method <ul><li>If window target = 169.3 … </li></ul><ul><li>Aluminium frame / clear IGU </li></ul><ul><li> R (Total) = 0.26 </li></ul><ul><li> 45m 2 @ 0.26 = 173.1 </li></ul><ul><li> ( 3.8 must be made up elsewhere) </li></ul>
  28. 28. calculation method <ul><li>If window target = 169.3 … </li></ul><ul><li>Thermally broken frame/clear IGU </li></ul><ul><li> R (Total) = 0.31 </li></ul><ul><li> 45m 2 @ 0.31 = 145.2 </li></ul><ul><li> ( 24.1 can be reduced elsewhere) </li></ul>
  29. 29. modeling method <ul><li>Modeling Method </li></ul><ul><li>Designer contacts a specialist with the appropriate software to calculate the building requirements </li></ul>
  30. 30. modeling method
  31. 31. status Zone 3 31 October 2007 Zone 2 30 June 2008 Zone 1 30 Sept 2008
  32. 32. thank you Refer to the Third Edition of NZBC Clause H1 – Energy Efficiency in conjunction with NZS 4218:2004 – Energy Efficiency, Small Building Envelope, for a full understanding of the changes.

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