North Shore homes span everything from 1950s Devonport villas to Albany's newer builds, and single glazing is still the biggest source of heat loss and street noise in most of them. We've verified which local installers genuinely operate on the North Shore, do the work themselves, and have a real, checkable track record.
This page highlights the top 4 double glazing installers in North Shore, based on independent research into reputation, accreditation, service quality and overall reliability.
The top 4 double glazing installers in North Shore are 1. North Shore Glass Co Ltd, 2. RetroFit Double Glazing (Auckland North), 3. Thermawood Auckland City Ltd, 4. Pimp My Windows Limited. Below we explain why each made the list, compare them at a glance, and share how to choose.
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A Takapuna-based, family-owned glass and glazing company operating since the 1960s from its own premises at 85 Barrys Point Road. It's a confirmed WGANZ (Window & Glass Association NZ) member with its own in-house team of builders, joiners and glaziers handling both retrofit and full-frame double glazing.
The Auckland North branch of RetroFit Double Glazing, a Metro Performance Glass (Metroglass) subsidiary with roughly 40 years in the NZ market, runs from a dedicated admin office at 28 William Pickering Drive, Rosedale, on the North Shore. As a nationally established retrofit specialist it brings manufacturer-backed products and process consistency that smaller local operators can't match.
Glenfield-based Thermawood installer (NZBN 9429052196751) using Thermawood's dry-glazing retrofit system for existing timber windows and doors. Independently rated 99.3% from 27+ reviews on NoCowboys, with repeated customer mentions of tidy, on-time installation crews.
A North Shore-based aluminium joinery installer (Rosedale/Vega Place) with 25+ years of combined experience manufacturing and installing new double-glazed aluminium windows and doors across North Auckland and Rodney. Operates as a one-stop manufacture-and-install shop rather than subcontracting the work out.
A quick comparison of our Top 4 picks. Select up to 3 businesses above to compare their strengths side by side.
| Double Glazing Installer | Best for |
|---|---|
| North Shore Glass Co Ltd | Full-service glazing, from retrofit double glazing to full-frame aluminium joinery |
| RetroFit Double Glazing (Auckland North) | Retrofit double glazing into existing timber or aluminium frames |
| Thermawood Auckland City Ltd | Retrofit double glazing for older timber-framed North Shore homes |
| Pimp My Windows Limited | Full-frame aluminium double-glazed window and door replacement |
Looking for double glazing installers in Takapuna or Devonport? Our recommended North Shore double glazing installers work right across the area, covering Takapuna, Devonport, Milford, Belmont, Birkenhead, Northcote, Glenfield, Castor Bay, Mairangi Bay, Browns Bay, Torbay, Albany and Beach Haven. Wherever you are, these are the double glazing installers North Shore locals rate.
Independent, editorial, and reviewed regularly.
TopChoice rankings are editorially curated by our New Zealand team and reviewed periodically. We don't host our own reviews. Our shortlists draw on public reputation signals from Google and other platforms, alongside our own research into each double glazing installer. We weigh up a combination of:
We don't accept payment in exchange for a place in the Top 4. Featured placements are separate and always clearly labelled. Rankings may change over time as businesses evolve.
Since May 2023, NZ Building Code Clause H1 has required a minimum window and door R-value of R0.46 in Auckland's climate zone, up from R0.37 previously. Windows are still the weakest thermal element in most North Shore homes, especially older villas in Devonport and Milford, so it's worth asking any installer how their product performs against that H1 minimum, not just whether it's 'double glazed'. Any installation also needs to meet NZS 4223, the relevant glazing standard covering glass selection (Part 1) and human-impact safety for glazing within 2000mm of floor level (Part 3). A WGANZ (Window & Glass Association New Zealand) membership is a reasonable signal that an installer operates to these standards, though it's not a guarantee on its own.
There are two genuinely different ways to double glaze a North Shore home: full frame replacement, where the entire window and door joinery is replaced with new double-glazed aluminium or timber units, and retrofit or secondary glazing, where a double-glazed unit or magnetic secondary pane (such as the established RetroFit Double Glazing or Magnetite systems) is fitted into your existing frames. Retrofit is usually cheaper and faster, and suits sound existing joinery; full replacement makes more sense where frames are damaged or you're renovating anyway. One thing to be clear on: unlike insulation or heat pumps, there is no EECA Warmer Kiwi Homes grant for double glazing, so get like-for-like quotes for both approaches before deciding.
Retrofit double glazing on a typical North Shore home generally runs from around $18,000 to $28,000, depending on the number and size of windows, while full-frame replacement with new aluminium joinery tends to sit higher, often $30,000 or more for a full home. Get quotes from at least two installers, as pricing varies by glass spec, frame material and access.
No. EECA's Warmer Kiwi Homes scheme funds insulation and heat pumps, but windows and glazing are explicitly excluded from that programme. Any installer implying there's a government grant or rebate for double glazing itself is not being accurate.
Full frame replacement swaps out the entire window or door unit, frame and all, for new double-glazed aluminium or timber joinery. Retrofit (or secondary glazing) fits a double-glazed unit or a magnetic secondary pane into your existing frame, keeping the original joinery. Retrofit is usually cheaper and quicker, and works well where the existing frames are sound; full replacement suits older or damaged joinery, or a wider renovation.
A retrofit double glazing job on an average North Shore home typically takes one to a few days once glass is manufactured, which itself can take several weeks. Full frame replacement takes longer on site and usually requires a longer manufacturing lead time for the new joinery.
Generally yes. Windows remain the weakest thermal element in most pre-2000s North Shore homes, and since 2023 the Building Code's H1 clause requires new and replacement glazing to hit a minimum R0.46 in this climate zone, well above older single glazing. Beyond warmth, double glazing on busier North Shore roads also meaningfully cuts noise transfer.
Our recommended North Shore double glazing installers cover Takapuna, Devonport, Milford, Belmont, Birkenhead, Northcote, Glenfield, Castor Bay, Mairangi Bay, Browns Bay, Torbay, Albany and Beach Haven, plus the wider North Shore area. Many also serve neighbouring suburbs, so it is always worth confirming your exact location when you enquire.
Editorial disclosure: TopChoice is an independent editorial platform. Some pages may include clearly labelled featured placements for additional visibility. Featured placements do not influence rankings within our Top 4 lists.
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