Doors

uPVC single doors

Rich natural illumination

Yearning for a brighter home? uPVC Single Glass Doors usher in an abundance of natural light. Bid farewell to gloomy interiors as these doors let the sunshine in, making every room feel warm, inviting, and comfortable.

Our uPVC Single Glass Doors can be constructed with either foam flat panels or T&G panels. There are three configuration options to choose from: inwards opening with key lock, outwards opening with key lock and inwards opening Tilt & Turn.

Transform your home

All doors can be configured as left or right-hand opening and are available in a wide range of sizes, colours, textures, glass types, and a variety of security options.

The images shown below are a subset only of all possible configurations. Please speak to us about your preferences and let us craft the perfect door tailored to your unique style and needs.

Single 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

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

Superior thermal insulation performance

NK’s single doors are celebrated for their outstanding insulation, harnessing the innate thermal efficiency of their materials. With uPVC serving as a robust insulator, they efficiently reduce heat loss in winter and heat gain in summer. Augmented by a multi-chambered frame design and double glazed units featuring low-emissivity coatings, these doors markedly enhance their insulation, leading to decreased energy usage, reduced heating and cooling expenses, and enhanced indoor comfort throughout the year. Opting for these doors reflects an environmentally conscious choice to diminish your carbon footprint and support the development of sustainable, energy-efficient living environments.

ECONOMICAL

Energy efficiency

uPVC single glass doors are champions in the battle against energy wastage. They help maintain a comfortable temperature indoors, keeping you cozy in winter and cool in summer.

GLASS

Natural light

The use of glass in our single doors allows natural light to enter the room, creating a bright and open atmosphere that enhances your overall living experience.

TROUBLE-FREE

Low maintenance

uPVC Single Glass Doors boast a low-maintenance profile. A simple wipe down is all it takes to keep these doors looking brand new.

VISIBILITY

Clearly better

Single glass doors allow for clear visibility between rooms or areas, making it easier for you to keep an eye on children, pets, or activities in adjacent spaces.

SECURITY

Reinforced steel structure with multi-point locking systems

NK’s single doors are meticulously designed to prioritize security, boasting a tight, impenetrable seal when closed, fortified by a multi-point locking system and resilient materials. Even in a tilted position, they deter unauthorized entry, offering a seamless fusion of security, durability, and aesthetic charm. 

Talk with our team about your plans

Whether you’re beginning a renovation or constructing from scratch, the path to creating a standout home starts with NK Windows. Regardless of the scale of your project or the extent of your vision, our team is here to support you at every stage.

You can trust us to make your dreams a reality and transform your house into a true 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. Our glass is custom processed and cut 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 and door frames, to everyday items like credit cards, water bottles, and blood bags. 

Security is at the forefront of our design philosophy. We can assure you that NK Windows uPVC range of doors are built with your safety in mind. Our doors feature advanced locking mechanisms and sturdy construction, making them a strong barrier against unauthorised access. Rest easy knowing that your home’s security is a top priority for us.

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

Absolutely. All our uPVC products are specifically engineered with New Zealand’s climate in mind, including those intense UV rays. The same robust formula stands resilient in other high UV areas around the world, 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 windows and doors are perfect for bungalows and villas.

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

  • LightBridge Double Glazing – includes argon and Low E 
  • Laminated glass for improved security and noise reduction
  • Obscure glass for increased privacy
  • Tinted glass for improved privacy and reduced solar gain

Regular cleaning and maintenance are essential for all doors and 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 doors and windows.

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

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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