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Timber-framed additions look great on day one. A few years in, they need repainting. A few more, and you're dealing with rot, swelling, warping, and the ongoing cost of keeping them presentable. It's a cycle that doesn't end but gets more expensive.
Aluminium doesn't work that way. It doesn't absorb moisture, it doesn't swell in winter or shrink in summer, and it won't rot at the base where the frame meets the floor. The powder-coated finish is baked on, not brushed on, which means it holds its colour and resists fading, chipping, and weathering for the long term.
Canterbury winters are long and the light is low. South-facing rooms that never see direct sun, hallways that stay dim, living spaces that feel smaller and darker than they need to. This is one of the most common frustrations we hear from homeowners. A well-positioned conservatory changes all of that in a way that no interior renovation can.
Glass walls and a glazed roof bring daylight into parts of a home that wouldn't otherwise receive it. A conservatory on the north-facing side of a home captures sun through the cooler months when you want it most, and with the right glazing specification (Low E glass, argon gas fill) it manages heat gain in summer without turning the space into a greenhouse.
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A conservatory is an addition to your home, which means it needs to perform like part of your home, not like an afterthought bolted on the back. That starts with how it's built and what it's certified to do. Every conservatory is tested and verified by the Window and Glass Association of New Zealand for wind deflection, water tightness, and air leakage.
Our 800 Series thermally broken system includes heavy-duty multi-point locking across all door configurations, sliding, bi-fold, stacking, and hinged. The frames are engineered for strength, not just appearance, which means the glass is well-supported and the locks are anchored into a system designed to resist force.
A full home extension is a significant undertaking. Depending on the size and complexity, you're looking at months of design and consenting, a construction phase that disrupts daily life, and a cost that reflects all of it. For most Canterbury homeowners who need more usable space, it's more than the situation calls for.
A conservatory delivers meaningful additional space at a fraction of the cost and timeframe. Builds under 5 square metres typically require no building consent, which removes a significant delay from the process. Even for larger structures that do require consent, our team manages the process from start to finish, including planning, foundations, drainage, electrical, and the council sign-off, so you're not left coordinating between multiple trades and chasing paperwork yourself.
Number One Windows and Doors works across both residential and commercial projects throughout Christchurch and Canterbury.
Whether you're a homeowner looking to add a conservatory to an existing property, a developer working on a multi-unit build, or a business wanting to extend or upgrade a commercial space, our team has the experience and the product range to get it done properly.
Every project is managed by our team from the first consultation through to final inspection and sign-off.
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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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