7 Durability Considerations for uPVC Windows in New Zealand for Better Buildings

New Zealand’s diverse climate, ranging from the sunny North to the icy deep South, presents a huge durability challenge for most construction materials. When it comes to window frames, surviving in the face of varying temperatures, high humidity, and exposure to intense sunlight is paramount. In this context, uPVC (unplasticized polyvinyl chloride) emerges as a […]

H1 Compliance Genius: R0.74 windows offer design freedom back!

Graph showing window R value savings for H1 Compliance

When it comes to H1 Compliance, by far the greater energy savings are possible from the worst performing elements. This seems obvious, right? Ok, answer me this then; if you could increase either your roof or your windows by R0.01, would it make a difference which one you chose? Most people think the logical answer […]

The Bad, Better and Best of H1 Compliance: Schedule, Calculation, or Modelling method

H1 Compliance Method

This blog assumes you have a basic knowledge of how the code works; if you want a refresher, please read through our other blogs here, https://starke.co.nz/blog/ . Also note that this blog covers H1/AS1 (Acceptable Solution). There are other methods of demonstrating H1 Compliance without using an acceptable solution, but these are rare. what are the three […]

Window installation in NZ; the one big mistake commonly made in New Zealand

Recessed window installation - Starke70 uPVC

  Good quality windows and doors deserve a good quality window installation.  And that means they should be installed recessed into your wall; not hung out over the cladding as is so commonly done! In other words, the warm barrier down the middle of the glass and down the middle of the frame needs to […]

What is a good R-value for windows in New Zealand?

Windows, R-value, New Zealand Joinery

A good R-value for a window in New Zealand is R0.65 to R0.8. You can achieve this with: uPVC windows with low-E double glazing Timber windows with Low-E double glazing Imported thermally broken aluminium windows with good Low-E double or triple glazing From 2008-2022, the New Zealand Building code required a minimum of R0.26, which […]