SNZ NZS 4214
Methods of Determining the Total Thermal Resistance of Parts of Buildings
| Organization: | SNZ |
| Publication Date: | 29 May 2006 |
| Status: | active |
| Page Count: | 43 |
scope:
Thermal resistance
This Standard gives methods of determining the thermal resistance of building components and elements consisting of thermally homogeneous layers which may include air layers.
Elements and components
The methods may be applied to individual elements and components, or to complete assemblies such as walls, roofs and floors.
This Standard provides only limited methods for dealing with components, or elements containing reflective foil used as a radiant barrier, and the thermal performance of sub-floor spaces.
Inclusions
Three methods for the determination of thermal resistance are provided:
(a) Laboratory measurement;
(b) Site measurement; and
(c) Calculation.
Exclusions
(1) The methods are not intended to be applied to windows or glazing.
NOTE - Software packages such as THERM
(http://windows.lbl.
(2) The methods for the calculation of the building envelope component R-values are not intended to be used in the calculation of R-values for use in computer thermal performance simulation programmes. The R-values in this Standard are intended to show compliance with the schedule and calculation methods in NZS 4218 and/or NZS 4243.
Interpretation
For the purposes of this Standard the word "shall" refers to practices that are mandatory for compliance with this Standard. The word "should" refers to practices which are advised or recommended.
The terms "Normative" and "Informative" are used in this Standard to define the application of the Appendix to which they apply. A "Normative" Appendix is an integral part of a Standard, whereas an "Informative" Appendix is only for information and guidance.
Document History
