Double Glazed Doors Christchurch
From sliding doors and French doors to bifolds and entrance doors, we supply and install double glazed doors across Christchurch and Canterbury. Whether you’re replacing a draughty old slider or adding new doors as part of a renovation, a well-fitted double glazed door makes a genuine difference to warmth, noise, and security. Get in touch for a free measure and quote, and we’ll talk you through the right option for your home.
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Double Glazing Christchurch
Your Doors Could Be Your Home's Biggest Heat Leak
Glazed doors, especially large sliding doors, cover far more glass area than most windows in your home. That makes them one of the biggest sources of heat loss, particularly in Christchurch homes built between 1970 and 2000, where single-glazed sliders are still standard.
It’s not just the glass either — old door tracks are often draughty, letting cold air creep in around the seals no matter how well the rest of the house is insulated. Even a well-insulated home can feel cold if a large single-glazed sliding door is quietly undoing all that work every winter.
Upgrading to double glazed doors tackles heat loss, noise, and security all at once. The sealed air gap between the panes slows heat transfer dramatically, while modern locking mechanisms and tougher glass make these units considerably harder to force open than older single-glazed sliders.
The improvement isn’t limited to sliding doors either. French doors, bifolds, and entry doors all carry the same weak points when they’re still single glazed, so whichever door type you’re dealing with, the same principle applies.
If you’ve already looked into retrofit double glazing for your windows, your doors are worth the same attention — often more, given how much glass area they cover. Get a free quote and we’ll assess where the heat is actually escaping from your home.
Double Glazed Door Types Available in Christchurch
Double glazed sliding doors
Sliding doors are the most common glazed door in Christchurch homes, and usually the first place we recommend starting. We replace existing single-glazed sliders with thermally efficient double glazed units in the same opening, so you get a real performance upgrade without altering your home’s layout. Options are available in both aluminium and timber-look profiles.
Double glazed French doors
French doors are a popular choice in renovations and older Christchurch character homes, adding a classic look while bringing modern thermal performance. Both inswing and outswing configurations are available depending on your space. If you’re pairing new doors with aluminium double glazed windows elsewhere in the home, we can help the two work together visually and thermally.
Double glazed bifold doors
Bifold doors open up indoor-outdoor flow without giving up warmth once they’re closed. They’ve become increasingly popular in Christchurch renovations, sealing far better when shut than older louvre systems or single-glazed alternatives ever did.
Double glazed entry and front doors
Your front door is both a security barrier and a thermal one. We offer solid or partially glazed double glazed entry doors, and can advise on glass specifications that balance privacy, security, and street appeal.
Not sure which type suits your home? Send through a few details on the quote form and we’ll point you in the right direction.
Replacing Existing Doors vs. New Installations
Not every job means starting from scratch, and it helps to know which scenario applies to you.
Replacing existing doors: the old single-glazed door and frame come out, and a new double glazed door and frame go into the same opening. Most standard opening sizes are accommodated with minimal structural work, which makes this the most common option for 1970s–2000s sliding door units.
Replacing a failed double glazing unit: if your existing double glazed door has fogged up or shows moisture between the panes, it’s often just the glass unit that needs replacing rather than the whole door. This is usually more cost-effective than a full replacement, provided the frame itself is still in good condition.
New installations: adding a door opening where none currently exists involves structural work, so we coordinate with a builder where needed for new build or renovation projects. Whatever the scenario, get in touch for a free quote and we’ll confirm the right approach for your home.
Benefits of Double Glazed Doors
- Warmer homes — large glass doors are often the biggest thermal weak point in the house
- Less condensation — far less moisture and mould around door reveals
- Better security — modern units are considerably harder to force than old single-glazed sliders
- Quieter inside — noticeable noise reduction near busy roads or in inner-city suburbs
- Lower power bills — less heat escaping through your largest glass surfaces
- Smoother operation — modern sliding and bifold systems run more easily than ageing units
- Added home value — a feature many buyers now expect
How It Works
- Free measure & quote — we assess your existing doors, measure the openings, and talk through your options
- Product selection — we help you choose the right door type, frame colour, and glass specification
- Scheduled installation — usually a half to full day depending on how many doors are involved
- Professional fit — correct alignment, smooth operation, and proper sealing throughout
- Final check — locks, tracks, and seals are all tested before we leave
Get in touch to book your free measure and quote.
Double Glazed Doors Across Christchurch & Canterbury
We install double glazed doors throughout Christchurch, including Avonhead, Burnside, Bishopdale, Bryndwr, Papanui, Riccarton, Halswell, Wigram, Hornby, Sockburn, Hillmorton, Parklands, New Brighton, and Linwood. We also cover Rolleston, Selwyn, Rangiora, and the wider Canterbury region.
If you’re also considering a pet door as part of your door upgrade, take a look at our pet door installation page — it’s a straightforward add-on when a new door is already going in. For the full picture on double glazing Christchurch options across your home, our main service page covers windows as well as doors.
Not sure if we cover your area? Get in touch — chances are we do.
Double Glazed Doors FAQs
How much do double glazed sliding doors cost in Christchurch?
Cost depends on the size of the opening, the frame material, and whether you’re replacing an existing door or adding a new one. Every home is different, so rather than quote a generic figure, we prefer to measure your specific doors and give you an accurate cost. Get in touch through the quote form and we’ll organise a free measure and quote for your home.
Can you replace just the glass unit in my existing double glazed door?
In many cases, yes. If your existing double glazed door has fogged up or shows moisture between the panes, it’s often the glass unit rather than the whole door that needs replacing, provided the frame is still in good condition. We’ll assess your door during the quote process and let you know whether a unit-only replacement is possible.
How long does door installation take?
Most single door installations are completed within a half to full day, depending on the number of doors involved and the scope of the job. Larger projects with multiple doors, or new openings requiring structural work, may take longer. We’ll give you a clear timeframe once we’ve assessed your specific job.
What’s the difference between standard and thermally broken door frames?
A thermally broken frame has an insulating barrier built into the frame itself, reducing heat transfer through the metal in addition to the double glazed glass. Standard frames don’t have this barrier, so more heat can escape through the frame even with double glazing fitted. We can talk you through which option suits your home and budget at the quote stage.
Are double glazed doors more secure than single glazed?
Generally, yes. Double glazed units are considerably harder to force open or break than older single-glazed sliders, and modern locking mechanisms add a further layer of security. It’s one of the reasons homeowners upgrading for warmth often see security as a welcome bonus rather than the main driver.
Can you match my existing door frame colour?
In most cases we can match or closely coordinate with your existing frame colour, particularly with aluminium joinery where a wide range of powder-coat finishes are available. We’ll go through colour and finish options with you as part of the quote process so the new doors sit well with the rest of your home.
Do you install double glazed bifold doors in Canterbury?
Yes, we supply and install double glazed bifold doors across Christchurch and the wider Canterbury region. They’re a popular choice for opening up indoor-outdoor living areas while still sealing properly against Canterbury’s cold winters. Get in touch for a free quote if you’re considering bifolds for a renovation or new build.
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Get a Free Double Glazed Door Quote
If your Christchurch home still has single-glazed sliding, French, or bifold doors, a free assessment will show you exactly what’s possible and what it will cost. We visit your home, check your doors and frames, and give you a written quote based on your actual doors — not a ballpark figure from a website.
Most Christchurch door installs are completed within a day. Call us on 03 567 1648 or fill in the form and we’ll organise a time that suits you.
