Doors

uPVC sliding doors

Effortless elegance and durability: uPVC sliding doors

Our uPVC sliding doors offer an exceptional combination of style, durability, and energy efficiency. Designed with precision, these doors glide effortlessly along their tracks, providing smooth and easy access to your outdoor spaces. The modern frame design maximises natural light and provides uninterrupted views, enhancing the overall aesthetics of your home. Made from high-quality uPVC, these sliding doors are not only visually appealing but also incredibly low-maintenance, resistant to New Zealand weathering, and built to last, ensuring they look great and function flawlessly for years to come.

Energy efficiency and security combined

Our uPVC sliding doors excel in energy efficiency and security. The uPVC material offers excellent thermal insulation, keeping your home warm in winter and cool in summer, which can lead to significant savings on energy bills. These doors are also equipped with advanced locking systems, providing a high level of security without compromising on style. With NK Windows uPVC sliding doors, you get the perfect blend of modern design, energy efficiency, and peace of mind, making them a smart investment for any home.

Customise your living environment effortlessly. With a range of finishes and configurations, you can tailor these doors to your unique style and architectural preferences,

Sliding door options and accessories

Colours

Choose from our range of colours and finishes that best complements your project while offering durability ensuring a cohesive and long-lasting appeal.

Glazing

Consider energy efficiency, aesthetics, and durability, balancing functionality and design with glass options, coatings, and framing materials.

Hardware

When selecting from our range of door and window handles and hardware, prioritise functionality, durability, and aesthetic compatibility with your space.

Blinds & screens

Blinds and screens for doors offer privacy and protection from insects while allowing fresh air and natural light to filter through, enhancing the comfort and ambiance of indoor spaces.

Pet doors

Pet doors provide convenient access for animals to enter and exit homes autonomously. Pet doors come in various sizes and designs to complement the style of your home.

Warranties

All our products are backed by warranties offering assurance against any defects or product malfunctions, providing peace of mind. ​

The benefits of uPVC are clear

Multi-chamber profile
Noise absorbing uPVC
Rubber seal
Double glazed units
Reinforced steel core
Rubber seal
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SECURITY

Safeguarding your home and providing peace of mind

uPVC sliding doors are meticulously engineered with multi-point locking systems, providing strong protection against forced entry. Their durable frames are reinforced with a steel core, adding extra resistance to tampering and break-ins. The smooth sliding mechanism is equipped with secure locks, further enhancing their security. With their solid construction and dependable locking features, uPVC sliding doors deliver a powerful barrier against intruders, ensuring a safe and secure home environment.

FLOW

Indoor outdoor connection

When fully opened, our uPVC Bifold Doors provide a large and wide opening that blurs the boundary between the interior and exterior, connecting the two spaces.

GLASS

Natural light

Bifold doors typically feature large glass panels, allowing ample natural light to create a bright, open, and inviting atmosphere

FLEXIBILITY

Flexible openings

You also have the flexibility to open the door system partially or fully. This gives you control over the amount of space you want to open up.

EFFICIENCY

Space saving

Perfect for use in areas with limited space, such as patios, balconies, and small rooms as they fold into a neat concertina-style when opened, for maximum space efficiency.

WARMER

Superior thermal insulation performance​

Our uPVC sliding doors excel in insulation due to the inherent thermal efficiency of their materials. uPVC serves as a robust insulator, curbing heat loss during winters and heat gain throughout summers. The frames, featuring a multi-chambered design, coupled with double glazed units sporting low-emissivity coatings, amplify their insulating capabilities. This translates to diminished energy usage, decreased heating and cooling expenses, and heightened indoor comfort all year. Opt for an environmentally conscious decision, trim your carbon footprint, and aid in crafting eco-friendly, energy-efficient habitats.

Let’s talk about your project

Whether you’re embarking on a renovation or building from the ground up, the journey to creating a standout home begins with NK Windows. Whatever the size of your project or the scale of your vision, our team is here to support you at every stage.

You can rely on us to bring your dreams to life and turn your house into a home.

Frequently asked questions

The uPVC profile undergoes precision cutting and welding, with steel insertion and the fitting, testing, and glazing of opening and locking hardware all taking place in our Christchurch factory. Additionally, our glass is custom processed and cut in Christchurch by Viridian Glass. 

PVC is short for polyvinyl chloride, a type of plastic widely used in construction and various industries since the 1950s. uPVC, or unplasticised PVC, is a specific form of PVC that is highly suitable as a material for window frames. 

Its versatility allows it to be used in diverse applications, ranging from window frames and pipes to everyday items like credit cards, water bottles, and blood bags. 

Bifold doors have two or more panels connected by hinges. When the door is opened, these panels smoothly fold and stack against each other into a compact configuration. The hinges are designed to withstand frequent folding and unfolding.

Our bifold doors are equipped with robust locking systems, making them difficult to break into ensuring security when the doors are closed for your peace of mind.

Absolutely. The roots of uPVC windows trace back to 1959 when the first commercially available windows graced homes in Germany. Over the years, technology has advanced, and yet, some of those initial uPVC windows are still standing strong. In fact, more than 60% of European homes now boast the reliability of uPVC windows and doors. 

Absolutely. Our PVC profiles are crafted with New Zealand’s climate in mind, including those intense UV rays. The same robust formula stands resilient in high UV areas worldwide, from the Middle East to Australia and Latin America. 

Definitely. Many of our customer projects involve renovations. We understand the importance of preserving character, and our robust uPVC frames are perfect for bungalows and villas.

No. “uPVC windows” refers only to the frame material. We have access to the same glass options as aluminium and wood window suppliers through our partnership with Viridian Glass based in Christchurch. Most common options include: 

  • Standard Double Glazing – no argon, no Low E 
  • Planitherm XN Double Glazing – includes argon and Low E 

Its versatility allows it to be used in diverse applications, ranging from window frames and pipes to everyday items like credit cards, water bottles, and blood bags. 

Regular cleaning and maintenance are essential for all windows, as they can accumulate stains and damage over time due to pollution, weather, and various other factors. By adhering to proper cleaning and maintenance guidelines, you can optimize the appearance, functionality, and longevity of your windows.

To simplify the process, we have created a straightforward guide to assist you in caring for your windows.

Navigating the regulations for planning permission can be intricate and perplexing, particularly in determining when it is required or not. Permitted Development offers the opportunity to undertake specific home development projects without the necessity for planning permission. However, it is crucial to accurately adhere to planning guidelines to prevent any costly errors. Talk to one of our team today to find out more.

uPVC is known for its excellent thermal insulation properties. Bifold uPVC doors contribute to energy efficiency by helping to maintain a consistent indoor temperature.

Don't just take our word for it...

Wayne Mackay
Wayne Mackay
Excellent experience
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We had an excellent experience with NK windows, from Tani doing the quote to the final tweeks, They were very accomodating and the install guys did an excellent job, feels like a new house, would highly recommend the team to everybody.
Roslyn Whitley
Roslyn Whitley
Exemplar service
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I cannot thank Martin and his team at NK Windows enough for the exemplar service they have provided. Right from the beginning, NK Windows showed exceptional professionalism through ongoing communication of updates, scheduling of work and guidance on how to prepare for installation. The work was completed well within the time frame provided and the contractors were so friendly, they cleaned the windows so well at the end I questioned whether the glass was installed!! The windows look absolutely amazing and have transformed and modernised my 1950's home. For anyone wanting a fast, efficient and professional service, I would recommend NK Windows as your go to company.
Phil Smith
Phil Smith
Exceptional products
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Our immediate thoughts were "our house no longer feels like it's leaking heat". Exceptional products that significantly outperform our 15 year old double-glazed aluminium windows. No more condensation. Tilt & turn windows and doors means we can securely ventilate ... and no longer run the risk of kids hitting their heads on an open window! I suggest you have a close look at glass options ... to reduce summer overheating we opted for Performatech206 on north and west faces. Standard Low E & Argon on all other windows.
Elena and Alex
Elena and Alex
Accommodated all our requests
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Can highly recommend NK Windows to anyone who wants high performance glazing on their house. Tani and the team were a pleasure to deal with, and accommodated all our requests. Easy and professional install, thanks again!I suggest you have a close look at glass options ... to reduce summer overheating we opted for Performatech206 on north and west faces. Standard Low E & Argon on all other windows.
A Topp
A Topp
Zero moisture
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...Now that we have had many months of all weather, I can say categorically that we have had zero, absolutely zero moisture on the inside of our new uPVC windows. They always feel warm and dry. It has definitely improved the temperature and comfort in the house, even in the room furthest away from the heatpump. If I have one regret, it's that we couldn't afford to exchange the entire houselot of windows and ranchsliders: uPVC is clearly hugely superior to the aluminium that's mysteriously still being used NZ-wide. If you have a choice, if you can afford to build, you'd be crazy to choose aluminium. Tania was incredibly patient working with us through several quotes to see just how much we could afford to do. Installation day went off without a hitch. Couldn't recommend these windows, and this company more.
Kat Dodd
Kat Dodd
Stress free experience
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We had such an amazing, stress-free experience with NK windows. Tani is wonderful and a real asset to the firm. She explained everything so clearly and at great details and was super flexible when we wanted to make changes to the plan. She oversaw the project and was always available, always super helpful and accomodating. The crew who installed the windows and doors was professional and the work they did was spotless. The after-care was also top-notch. The product itself is just superior and really transformed our house. Overall, we could not be happier with the service we got from NK, and we cannot recommend them highly enough.
Alicia Moggre
Alicia Moggre
Professionalism and knowledge
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We just had 8 windows and a new door installed by NK windows, and immediately notice the increased warmth and decreased noise inside the house. The windows look good and the opening tilt and swing hardware works really well. Particularly impressed by the professionalism and knowledge of the people we dealt with from the initial quote to the detailed measure and the final installation. The install guys were happy to answer all my questions and kept everything very tidy while installing as well, great attention to detail. PVC windows are the way to go, and we picked NK windows because we liked that they have their own NZ based factory to make sure windows are made for NZ building requirements and that they complete the install as well so it was easy, and we knew it was done right for the window requirements.
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