Timber Double Glazed Windows Christchurch
Keep the character of your home while adding modern warmth. We install double glazing into existing timber frames across Christchurch and Canterbury — no need to replace what makes your home special.
Specialists in character & heritage homes | Existing frames preserved where possible | Christchurch & Canterbury locals
FREE INSTANT QUOTE
Double Glazing Christchurch
Double Glazing Doesn't Mean Replacing Your Timber Windows
One of the most common things we hear from Christchurch homeowners is that a previous glazier told them their timber frames couldn’t be double glazed. In most cases, that simply isn’t true. Timber frames can absolutely hold double glazed units — the key is assessing their condition and choosing the right installation approach.
Whether your frames are original sash windows from the 1920s or solid casements from the 1950s, there are two proven methods to bring them up to modern thermal performance without touching what gives your home its character. Preserving original joinery also makes sound financial sense — aluminium replacements can actively reduce the appeal and value of a period home.
If you’re not sure what’s possible with your windows, get in touch for a free assessment and we’ll give you a straight answer.
Christchurch's Character Homes Deserve Better Than Draughty Single Glazing
Christchurch has one of New Zealand’s largest concentrations of pre-1940s villas and bungalows, many of them concentrated in the inner suburbs and still in private ownership. A remarkable number survived the 2010 and 2011 earthquakes, and their owners work hard to maintain them. The problem is that most of these homes were built long before energy efficiency was a consideration, and single-glazed timber windows are a significant weak point.
Canterbury winters are unforgiving — the southerly winds, overnight frosts, and the particular bone-deep chill of an older uninsulated home are well known to anyone who’s lived here. Adding double glazing to your timber windows is one of the most effective ways to address that cold at the source.
It’s also worth knowing that heritage overlays apply to parts of Christchurch, meaning full window replacement may require resource consent. Retrofit double glazing fitted into your existing frames often sidesteps that requirement entirely — something worth discussing with us before you commit to any approach.
Ready to find out what’s possible for your home? Request a free quote and we’ll come and take a look.
Our Timber Window Double Glazing Options
There are two main approaches to double glazing timber windows, and the right one depends on your frames, your home, and what you’re trying to achieve.
Retrofit / secondary glazing adds a second pane to the interior of your existing timber frame. The original frame stays completely intact, there’s no painting or joinery work required after installation, and disruption to your home is minimal. This is a practical choice for character homes in heritage zones, rental properties, or where the priority is a straightforward, cost-effective upgrade.
Double glazed unit replacement (same frame) removes the existing single pane and fits a full double glazed unit directly into your timber frame. This delivers the best thermal and acoustic performance of the two options and is the right call where frames are structurally sound and in good condition.
Our team will assess your windows at no charge and recommend the right approach for your home and circumstances — no obligation, just a clear recommendation. Get in touch to arrange your free measure and quote.
Benefits of Double Glazing Your Timber Windows
Double glazing your timber windows lets you keep the look your home was built with while bringing it up to the standard a Christchurch winter demands. You’ll notice the difference immediately — warmer rooms, less condensation on the glass, and fewer draughts working their way through the frames.
Condensation is worth calling out specifically. Moisture sitting on cold single-glazed glass works its way into timber over time, accelerating rot and shortening the life of your frames. Double glazing significantly reduces that moisture load and helps protect the timber you’re trying to preserve.
There are practical benefits beyond comfort too. Less heat escaping through your windows means lower energy bills, and double glazing is now expected by buyers — even in character homes. It’s a performance upgrade that adds lasting value.
Speak to us about what double glazing could do for your home — the quote is free and there’s no pressure.
How It Works
Getting double glazing installed into your timber windows is a straightforward process from your end.
We start with a free measure and assessment — we visit your home, inspect your timber frames for condition and suitability, and talk you through the options. From there, we provide a written quote with no obligation and no hidden extras. Once you’re ready to go ahead, we schedule the installation at a time that suits you.
On the day, our team works carefully around your timber frames and treats your home with respect. Before we leave, we carry out a final check — seals, fit, and operation — to make sure everything is right.
The whole process is designed to be low-stress. If you’d like to get started, fill in the quote form below and we’ll be in touch to arrange a time.
Serving Christchurch & Canterbury Character Homeowners
We work across Christchurch and the wider Canterbury region, including suburbs with high concentrations of timber-framed character homes — Fendalton, Merivale, St Albans, Cashmere, Sumner, Lyttelton, Richmond, Spreydon, Addington, Sydenham, Beckenham, and Opawa among them.
We also cover wider Canterbury including Rangiora, Kaikōura, and the Selwyn District. If you’re not sure whether we come to your area, just ask — we’re happy to let you know.
For more on the range of double glazing services we offer, or to explore related options like retrofit double glazing, aluminium double glazed windows, or double glazed doors, follow the links or get in touch directly.
Common Secondary Double Glazing Questions From Christchurch Homeowners
Can you double glaze old timber windows without replacing the frames?
Yes, in most cases you can. The two main approaches — retrofit secondary glazing and double glazed unit replacement — both work within your existing timber frames. The right option depends on the condition and profile of your frames, which we assess as part of a free measure and quote. Many Christchurch homeowners are pleasantly surprised to find that frames they assumed were too old or too rough are perfectly suitable for double glazing.
Will double glazing change the look of my character home?
Not significantly, and in many cases not at all. Both installation methods work within your existing frames, so the exterior appearance of your windows stays the same. Secondary glazing in particular is almost invisible from outside. The goal is to improve your home’s thermal performance while keeping the period character intact — that’s exactly the outcome most of our customers are after.
My timber frames are a bit rough — can they still be double glazed?
It depends on the extent of the wear. Surface weathering, minor paint loss, or cosmetic roughness generally isn’t a problem. Where frames have significant rot or structural compromise, we’ll tell you honestly at the assessment stage rather than quote for work that won’t hold up. In some cases, targeted repairs to the frame make glazing viable — we’ll walk you through the options when we visit.
Do I need council consent to double glaze timber windows in a heritage zone?
In many cases, no — particularly where the work involves retrofit or secondary glazing fitted into your existing frames rather than full window replacement. However, heritage overlays vary across Christchurch, and some properties in scheduled heritage zones may have specific requirements. We’d always recommend checking with Christchurch City Council if your home is in a heritage overlay, but retrofit double glazing has worked within those rules for many of our customers.
How long does installation take on a typical Christchurch villa?
Most installations on a standard villa are completed in a single day. The exact timeframe depends on the number of windows, the method being used, and the condition of the frames. We’ll give you a realistic time estimate as part of your written quote so you can plan accordingly. There’s minimal disruption — your home is fully functional throughout, and we clean up before we leave.
How much does timber double glazing cost in Christchurch?
The cost varies depending on the number of windows, the installation method, and the condition of your frames — so there’s no single answer that’s accurate across the board. What we can tell you is that a written quote is completely free and carries no obligation. Fill in the form below and we’ll arrange a time to assess your windows and give you a clear, itemised price.
Is timber double glazing worth it compared to replacing with aluminium windows?
For character homes, we’d argue yes — and not just for aesthetic reasons. Replacing timber frames with aluminium can reduce the appeal of a period home in the eyes of buyers and, in some cases, affect its character zoning. Retaining your original joinery while upgrading the glazing gives you the thermal performance of modern double glazing without the trade-offs. It’s also often more cost-effective than a full window replacement.
FREE INSTANT QUOTE
get in touch
Get a Free Quote for Your Timber Windows
If you’ve got timber windows that are letting in the cold, attracting condensation, or just not performing the way they should, we can help. We’ll come to your home, assess your frames, and give you a clear quote — no obligation, no pressure.
Fill in the form below with a few details about your windows and we’ll be in touch to arrange a convenient time. Or if you’d prefer to talk it through first, give us a call on 03 567 1648 — we’re happy to answer questions before you commit to anything.
REWRITE FOR NICHE + CITY: Quantity Surveyors Invercargill provides accurate cost estimation and financial planning for residential and commercial projects. We ensure transparent budgeting, helping clients manage construction costs efficiently—Contact us today for expert advice.
