What to Look for When Hiring a Window Installer in NZ
- LBP licence
- Glass specification (toughened, low-e, argon-filled)
- Joinery thermal rating (H-value or window energy rating)
- Flashing and weatherproofing detail
- NZ window manufacturer (Altherm, Vantage, Stegbar)
Red Flags to Watch Out For
- No LBP mentioned
- Can't specify glass or frame performance ratings
- No flashing detail in quote
- Unknown or imported joinery brand
Typical Costs Across NZ
Aluminium double-glazed window: $600β$1,500 installed. Full house re-window: $15,000β$45,000+
Costs vary significantly by city β Auckland and Queenstown are typically the most expensive, while Invercargill and Dunedin are among the most affordable.
Licensing Requirements
LBP required for installation of new windows and external doors in NZ homes. Check the register β