11/4/2023 0 Comments Metro 4 instal the new for windowsWhile correspondingly a higher thermally efficient window frame system can use a lower thermal performance glazing to meet the minimum R window values. The general principal is that higher thermal performing Low E double glazing can use a less thermally efficient window frame system. However, the final implementation of the NZBC in Nov 2023 ends up with two groupings Climate Zones 1-4 and Climate Zones 5&6. This minimum R window values vary across the 6 new climate zones. Be that Aluminium, Thermal Break Aluminium, uPVC, Timber, or any other window frame type. The NZBC sets the minimum R window value for the combined double glazing and frame type. The MBIE map below illustrates the Climate Zones and Territorial Authority Boundaries, to use the Window and Glass Association NZ reference guide click on the map and simply add your Territoral Authority and consent date. Along with new climate zones this will see a jump in the thermal performance for windows in new homes and will vary depending on the climate zone of the build. The minimum thermal performance (keeping a home warm) for housing is changing for building consents lodged after the 3rd Nov 2022. WINDOW GLASS SPECIFYING LOW E RESIDENTIAL DOUBLE & TRIPLE GLAZING SELECTION When selecting the right double or triple glazing for your home one of the main considerations is generally around keeping your home warm in winter.
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