Sliding, stacking, bi-fold, hinged, and French doors all work differently and suit different situations. The choice affects how the space is used, how much of the opening is actually clear when the door is open, how the door performs in wind, and what the maintenance requirements look like over time.
Sliding doors work well for wide openings and move parallel to the wall, keeping the space on either side clear. Stacking doors open similarly but stack in a single direction, which suits certain layouts. Bi-folds fold back on themselves and can open a full wall, but require clear space for the panels to fold into. Hinged and French doors are better suited to smaller openings or situations where a more traditional look is the brief.
Glass doors (particularly sliding and stacking configurations) are one of the main paths for external noise to enter a home. Single-glazed or older double-glazed doors with thin glass and worn seals let in considerably more sound than a properly specified modern system.
Double-glazed doors with good seal compression reduce sound transmission meaningfully. The 800 Series thermally broken system, with its denser frame construction and tighter sealing, performs better again. For homes near busier roads, under flight paths, or in higher-density parts of Christchurch, the difference in how quiet the home feels day-to-day is noticeable.
A well-specified sliding, stacking, or bi-fold door changes how a home connects to its outdoor space. The no-trip threshold on our sliding and stacking doors allows the internal and external floor levels to align flush, with no step up or step down between the two surfaces, which makes the transition between inside and outside feel continuous rather than interrupted.
This is particularly relevant for homes with decks, patios, or outdoor entertaining areas where people are moving in and out regularly. A door that operates smoothly, seals properly when closed, and opens to a genuinely clear passage makes that connection practical, not just visual.
The quality of a door's hardware becomes apparent over years of use, not on installation day. Rollers that wear out cause panels to drag and drop out of alignment. Locks that weren't built for the load they're carrying start to feel loose. Track systems that aren't properly sealed fill with debris and create friction.
The Omega systems we install use heavy-duty stainless steel rollers, stainless steel locking components, and track systems that include a sump to capture and contain debris rather than letting it build up under the panels. The anti-drop components on hinged and bi-fold doors maintain alignment over time as the door settles.
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Designed to withstand strong weather conditions, the 300 Series exceeds performance standards and offers hassle-free maintenance.
The 300 Series hinged doors feature a rattle-free locking system and have adjustable bracing for greater stability.
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The 300 series stacker door features an innovative seal compression management system, which ensures durability and efficiency.
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Bifold doors are designed for duration and durability, offering both style and functionality.
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This 800 Series door offers durability and reliability, equipped with a tested Polyamide track system that makes it perfect for natural light and shielding against all kinds of weather.
A stylish choice for homes, the 800 Series hinge door features adjustable bracing and anti-drop components for stability.
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The stacker door is designed for precision and efficiency, ensuring durability and giving the option of wide openings to your home.
The bi-fold door is a secure choice for your home, with a rattle-free locking system and durable stainless steel connections, perfect for the diverse weather conditions of New Zealand.
Number One Windows and Doors installs across residential homes, new builds, renovations, and commercial projects throughout Christchurch and Canterbury. Whether you're replacing a single door in an existing home, specifying doors for a new architectural build, or upgrading joinery across a commercial premises, our team has the range and the experience to get it right.
We supply and install the full Omega door suite (sliding, stacking, bi-fold, hinged, French, and entrance configurations) across both the 300 and 800 Series systems. Every door is custom-made to your openings and installed by our own people, with a full quality check and walkthrough before we leave the site.
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Number One at Windows
Whether you're after standard non-thermal options or thermally broken frames for superior insulation, we offer a full range of window styles — including awning, casement, sliding, bi-fold, and fixed windows — all double-glazed for maximum energy efficiency, noise reduction, and year-round comfort. Every window is custom-measured, precision-installed, and built to handle Canterbury’s diverse climate, with sleek modern finishes and low-maintenance durability.
Number One at Doors
From the reliable Omega 300 Series to the high-performance, thermally broken 800 Series, our doors are built for style, durability, and insulation. Choose from hinged, French, sliding, stacking, or bi-fold configurations — all double-glazed to enhance energy efficiency, reduce noise, and provide year-round comfort. Every door is custom-made to suit your space and lifestyle, with sleek profiles, smooth operation, and finishes that complement your home. Whether you're building new or upgrading tired joinery, we handle the full process — from consultation to installation.
Number One at Conservatories
Whether you're adding to an existing property or building new, a conservatory offers the perfect, temperature-controlled space between indoors and out — ideal for dining, relaxing, working, or simply soaking up the sun. Our conservatories are built with high-performance double glazing and modern aluminium joinery for year-round comfort, thermal efficiency, and lasting durability. More than just an extra room, a well-designed conservatory floods your home with natural light, boosts property value, and creates a warm, versatile space you’ll use every day. Custom-designed to suit your home and lifestyle, we manage the process from concept to completion — delivering light, space, and comfort.
Number One at Replacements
At Number One Windows and Doors, we’re your local window replacement specialists, trusted by homeowners across Christchurch and Canterbury. We remove outdated, inefficient joinery and replace it with high-performance, double-glazed aluminium windows built to suit your home and climate. Whether it’s a like-for-like retrofit or a full replacement using Omega’s 300 or 800 Series systems, we ensure a smooth process from consultation to install — with minimal disruption and maximum thermal comfort. Backed by trusted suppliers and expert workmanship, we make replacing your windows a smart, long-lasting investment in your home.
800 Series
We proudly supply and install the full Omega 800 Series – a premium, thermally broken aluminium joinery system designed for superior performance in Canterbury’s varied climate. Ideal for both residential and architectural builds, the 800 Series offers enhanced energy efficiency, strength, and design flexibility, making it perfect for modern homes that demand comfort and durability.
300 Series
we offer the trusted and versatile Omega 300 Series – a reliable aluminium joinery system ideal for residential homes and renovations throughout Christchurch and Canterbury. Designed as a non-thermally broken suite, the 300 Series delivers excellent durability, clean modern lines, and seamless functionality at an affordable price point.
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