Bringing a building up to date?

Upgrade on every front – warmth, efficiency, durability and style

Transform your home

Renovating a home is exhilarating, offering the opportunity to breathe new life into living spaces and tailor environments to meet evolving needs and tastes. Lots of decisions are involved, and the choice of windows and doors is critical, as it impacts aesthetics, energy efficiency, security, and comfort. NK Windows has the experience and range to help you through the process to achieve a result you’ll be proud of.

Visit a showroom

Visit our showrooms to see our window and door systems up close, feel the quality, and discover how they can elevate your renovation project.

Our team is ready to answer questions, share insights, and guide you through the options to achieve your vision.

The benefits of our uPVC windows

EFFICIENT

Energy-saving

uPVC windows and doors boast excellent thermal insulation properties, effectively regulating indoor temperatures and reducing energy consumption year-round. By minimising heat loss in winter and heat gain in summer, uPVC helps create more comfortable living with lower utility bills.

DURABLE

Low maintenance

Unlike wood or metal frames, uPVC requires minimal upkeep, saving time and money. Resistant to rot, rust, and corrosion, uPVC windows and doors retain their appearance and functionality for years, making them a cost-effective choice for home improvement.

NOISE INSULATION

The sound of silence

uPVC windows and doors provide effective sound insulation, reducing noise pollution from outside and creating a quieter, more peaceful indoor environment. This is particularly beneficial for homes located in busy urban areas or near noisy streets, improving overall comfort and quality of life.

SECURITY

Multi-point locking

With advanced locking systems and durable construction, uPVC windows and doors offer enhanced security, providing homeowners with peace of mind and protecting their property against intruders.

We’ll fit your windows and doors with skill and care

At NK Windows, our skilled team know all about the complexities of fitting windows and doors into existing spaces. Our experienced technicians carefully measure existing openings, feeding that information into our custom design and manufacturing process to produce high-quality uPVC products. Our skilled installers fit new units with precision and care, minimising disruption to your home. From start to finish, NK Windows prioritises excellence, delivering beautiful, functional, and energy-efficient uPVC windows and doors that meet each homeowner’s unique needs.

“We've had our uPVC double-glazed windows for eight years now and have zero complaints. Any time there has been an issue, like with a worn seal, the NK team have come straight out and fixed it, with no further problems.”

Philippa L

“Can highly recommend NK Windows to anyone who wants high-performance glazing on their house. The team were a pleasure to deal with and accommodated all our requests. Easy and professional install. Thanks again!”

Elena & Alex

“We had an excellent experience with NK windows, from doing the quote through to the final tweaks. They were very accommodating, and the install guys did an excellent job. Feels like a new house; would highly recommend the team to everybody.”

Wayne Mackay

“Fantastic staff and product. Everyone we dealt with was knowledgeable, helpful, and genuine. There were some unavoidable delays with our project, but the communication was fantastic throughout. The price wasn't much above replacing with aluminium, and the performance of the uPVC is far superior. The house was instantly quieter, and it's noticeably warmer, with no more condensation.”

Rachel Isdale

“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 heat pump. If I have one regret, it's that we couldn't afford to exchange the entire house lot of windows and ranch sliders.”

A Topp

Don’t just take our word for it...

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.

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.

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.

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.

...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.

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.

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.