This website calculates compliance with insulation targets of NZBC, Clause H1 as of 31 October 2007. It calculates compliance with the New Zealand Standard NZS4218:2004, Schedule and Calculation Methods, using the R-value targets from NZBC/H1 (October 2007) and for compliance with the Building Performance Index (BPI).
The Calculator should be used in conjunction with NZS4218:2004, which can be purchased from Standards New Zealand and the Energy Efficiency Clause H1 of the New Zealand Building Code. Note that the 2009 version of NZS4218 is not the Acceptable Solution for NZBC Clause H1 until the H1 Approved Documents refer to it. It is not clear when this will happen. Until this is the case NZS4218:2004 (modified by the R-values listed in Clause H1) is the Acceptable Solution for H1.
This program is distributed without any warranty and the author is under no circumstances liable for any undesirable consequences arising from the use of this site. The local BCA has authority to accept or reject the output of this Calculator.
To get started watch the video tutorial here .
I have recently added a feature that allows users to trace a scanned image of a floor plan. The training video for this new feature can be found here .
Note: I am regularly adding further improvements to this calculator. I am always trying to conserve any previously saved projects but suggest that you keep printed copies of the compliance reports so that you can reproduce the results should the database records be damanged.
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