Reply To: Double Glazing

[Fred Braxton]

Hi Scott, in Build magazine John Burgess of BRANZ wrote a series of articles on parts of this subject in issues 123, 124, 125, 126 (2011) searchable on the BRANZ website at http://www.branz.co.nz/shop&series=19.

The incredibly useful Design Navigator website has an outline of the WERS rating system (click from the home page), which is the nearest we have to a standard in NZ and answers many of your questions above.

This is a very tricky topic because windows do lots of things!

 

 

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