Wellington's exposed hillside sites, older timber-joinery housing stock and notoriously windy, damp winters make double glazing one of the highest-value upgrades a homeowner here can make. We've researched and verified the double glazing installers genuinely operating in the Wellington region, checking registered business identity, independent reviews and real installation evidence rather than who simply ranks highest in search.
This page highlights the Top 5 double glazing installers in Wellington, based on independent research into reputation, accreditation, service quality and overall reliability.
The top 5 double glazing installers in Wellington are 1. Wellington Glass & Mirror Ltd, 2. Eversure Double Glazing, 3. RetroFit Double Glazing (Metro Direct Wellington), 4. Priced Right Glass Ltd, 5. Absolute Glass 2014 Ltd. Below we explain why each made the list, compare them at a glance, and share how to choose.
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A WGANZ member confirmed on the association's own directory (wganz.org.nz/members/wellington-glass-mirror-ltd/), with a Google rating of 4.9/5 from over 300 reviews. Trading over 25 years from Alicetown, Lower Hutt, it's the licensed retroGLAZE Partner for the Wellington region and offers both full-frame replacement joinery and retrofit double glazing for existing timber and aluminium frames.
Formerly trading as The Double Glazing Company (Wellington) Ltd, Eversure is a WGANZ-verified member (wganz.org.nz/members/eversure-double-glazing/) based in Kenepuru, Porirua, with a 5.0 Google rating from around 73 reviews. It's a specialist double-glazing operator rather than a general glazier, running distinct reFIT (timber and aluminium retrofit) and reFRAME (full replacement joinery) product lines.
RetroFit Double Glazing is a subsidiary of Metro Performance Glass (NZX: MPG), New Zealand's largest listed glass manufacturer, with over 35 years in the retrofit double glazing business and a dedicated Wellington branch at 18 Jamaica Drive, Grenada North. Installations carry a 10-year manufacturer warranty backed by a listed public company.
An owner-operated, Island Bay-based glazing business run by a father-and-two-sons team of qualified, registered glaziers with a combined 50+ years' experience and around 30 years trading. Independent third-party summaries report a 4.9/5 Google rating, and the business focuses on affordable retrofit double glazing alongside general residential glazing across greater Wellington.
A registered New Zealand limited company (incorporated 2007, confirmed via CheckMyBuilder's company profile), trading over 20 years from the Lower Hutt/Wainuiomata area. It has a specific specialism in colonial/villa double glazing, retrofitting period timber joinery in Wellington's many character homes without altering their heritage appearance.
A quick comparison of our Top 5 picks. Select up to 3 businesses above to compare their strengths side by side.
| Double Glazing Installer | Best for |
|---|---|
| Wellington Glass & Mirror Ltd | Homeowners wanting a long-established, industry-body-verified installer covering both retrofit and full-frame options |
| Eversure Double Glazing | Homeowners in Porirua/Kapiti wanting a specialist double-glazing-only company |
| RetroFit Double Glazing (Metro Direct Wellington) | Homeowners wanting the backing and warranty security of a large, publicly listed glass manufacturer |
| Priced Right Glass Ltd | Homeowners wanting a smaller, owner-operated local team for retrofit double glazing |
| Absolute Glass 2014 Ltd | Owners of character villas and colonial-era homes wanting heritage-sensitive retrofit |
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 5. Featured placements are separate and always clearly labelled. Rankings may change over time as businesses evolve.
Windows are the weakest thermal element in most Wellington homes, and this matters more here than almost anywhere else in New Zealand given the region's exposed sites and wind-driven weather. Since May 2023, Building Code Clause H1 has required a minimum window and door R-value of R0.46 across most of the country, and any glazing work should meet or exceed this. It's also worth checking that an installer's products meet NZS 4223, the relevant glazing standard, including Part 3's human-impact safety requirements for glass within 2000mm of floor level. Genuine WGANZ (Window & Glass Association New Zealand) membership is one of the clearest signals of an accountable, industry-recognised operator, and it's worth checking a business against WGANZ's own member directory rather than taking a badge on a website at face value.
There are two genuinely different approaches to double glazing, and a good installer should be upfront about which one suits your home. Full frame replacement swaps out entire window and door joinery for new double-glazed aluminium or timber units, which is more disruptive and costly but gives the best long-term thermal performance. Retrofit or secondary glazing, including established systems like RetroFit Double Glazing and Magnetite, fits new glazing into your existing frames, which is faster, cheaper and better suited to heritage or character homes where the original joinery is worth keeping. One thing to be clear on: unlike insulation and heat pumps, which can be funded through EECA's Warmer Kiwi Homes scheme, there is currently no government grant covering double glazing or window replacement in New Zealand, so it's a cost worth budgeting for directly and comparing carefully between quotes.
Costs vary widely depending on whether you choose full frame replacement or retrofit/secondary glazing, the number and size of windows, and the frame material (timber vs aluminium). Retrofit into existing frames is typically the more affordable option since it avoids removing and replacing joinery. Get quotes from at least two or three verified local installers, as pricing differs significantly between operators.
No. Unlike insulation and heat pumps, which can be funded through EECA's Warmer Kiwi Homes programme, double glazing and window replacement are not covered by any EECA grant scheme. Homeowners need to budget for double glazing as a direct cost, though the energy savings and comfort improvements can offset this over time.
Full frame replacement removes your existing window and door joinery entirely and installs new double-glazed aluminium or timber units, giving the best thermal performance but at higher cost and disruption. Retrofit (or secondary) double glazing, such as the RetroFit Double Glazing or Magnetite systems, fits a new glazing unit into your existing frames, which is quicker, less invasive, and often preferred for heritage or character villas where the original joinery is worth preserving.
A retrofit job on an average Wellington home is often completed within a few days, with some smaller jobs finished in a single day. Full frame replacement takes longer, as it involves removing and refitting entire window and door units, and can take from several days to a few weeks depending on the scope of the project.
Yes, particularly given how exposed and wind-affected much of Wellington is. Since May 2023, the Building Code has required new and replacement glazing to meet a minimum R0.46 thermal performance, reflecting how significant a role windows play in a home's heat loss. Retrofit double glazing is especially well suited to older villas and character homes, since it upgrades thermal and noise performance without needing to replace original timber joinery.
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 5 lists.
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