What is uPVC
UPVC, which stands for Unplasticized Polyvinyl Chloride, is a robust rigid form of plastic known for its strength and durability. UPVC does not flex, this makes it an ideal building material for doors and windows. Its resilience and low maintenance requirements have made it a popular choice in modern construction.

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info@koffman.co.nz
021 834 183
The windows and glazing are ultra-high performance with superb European engineering.
UPVC Vs Aluminium
We are a leading supplier of European uPVC
As the leading supplier of European uPVC, we partner with the best suppliers to bring you the latest technology straight from Europe. Whether you’re after an industrial-sized project or just a couple of windows, you can trust Koffman to deliver top-quality solutions.



Why choose uPVC?

Top-Tier Thermal Properties
Excellent insulation to keep your home comfortable
Durability
Highly resistant to weathering
Low Maintenance
No need for painting or regular upkeep
Noise Reduction
Superior soundproofing capabilities
Security
Robust and secure against intruders
Customisation
Available in various styles and colours
Affordability
Cost-effective with long-term energy savings
Environmentally Friendly
Recyclable and energy-efficient

Koffman uPVC exceeds expectations
The uPVC we supply far exceeds the current R ratings for NZ, ensuring significant energy savings and compliance with future building codes.
R Ratings in new zealandHow Does uPVC Perform?
uPVC is ideal for energy-efficient homes. UPVC is an excellent thermal insulator, minimising the transfer between the interior and exterior of your house to a minimum.


How is my home more secure with Koffman?

The glass in our windows is fitted from inside the house, which means unlike other frames, the glass isn’t susceptible to burglars pulling the rubber seal and removing the glass from the outside and gaining entry without making noise.
Multipoint locking system: The turn of a handle locks the sash surrounding the window, unlike single latch windows in NZ. Our windows have min RC2 rating and RC3 – these are possible with specialised glass option.
RC2
All-round fitted system with octagonal locking bolts, steel keeps on the frame, lockable window handle and anti-drilling protection which ensures resistance to attempted break-ins.
RC3
Equipped with an even higher number of octagonal locking bolts at small distanced between locking points. RC3 can also withstand intensive burglary attempts with tools.
What glass is used
At Koffman, we use Planitherm XN, a premium European glass know for its exceptional performance and energy efficiency.
Argon-filled units and plastic spacers:
Our double and triple-glazed units use Low-e glass filled with argon gas and feature plastic spacers. Low-e (low emissivity) glass has a special coating that reduces the rate at which heat escapes from a building.
Your uPVC windows won’t degrade under the sun
The special formula of uPVC is UV resistant. Colours used are superior grade of 4 layers of vinyl coating to make it strong and UV resistant. We also offer aluminium clip-on frames which give a sleek and stylish aluminium look while creating an additional protective layer for the uPVC.

Frequently Asked Questions
At Koffman, we stand behind the quality, durability, and performance of our windows and doors. We work exclusively with the best products available straight out of Europe, all of which come under warranty and are built to last.
info@koffman.co.nz
021 834 183
Please contact us if you have any questions or would like to request a quote.
Contact UsQ. Will the uPVC discolour over time?
No, at Koffman uPVC is UV stabilised, ensuring the colour remains and does not fade.
Q. Are uPVC windows and doors expensive?
No, the energy savings and reduced maintenance costs associated with uPVC make them an affordable choice in the long run. These are the standard option in Europe and economies of scale at the factory makes it affordable for our customers.
Q. Why choose uPVC over aluminium?
uPVC is a great insulator, maintenance-free, resistant to corrosion, rot, and degrading.
Q. What is the thickness of your double glazing?
24mm spacers are used between the panes of glass in double glazing, triple glazing uses 2 x 18mm spacers. Very few local window frames can support that.
Q. I like the look of aluminium but want uPVC?
We provide clip-on aluminium frames that give the look of aluminium with the benefits of uPVC.
Q. Can I replace existing windows with upvc?
Yes, they are excellent for new builds or existing houses, reach out and we can provide you with a quote
Q. Are all uPVC brands the same?
No, quality varies. Inferior brands often lack UV stabilisers, leading to discolouration and poor performance. Koffman only supplies trusted, high-quality European brands.
Q. Is the uPVC lead-free?
Koemmerling uses lead-free PVC with green stabilisers based on calcium and zinc. This guarantees the products we supply at Koffman work to protect the environment and people manufacturing the products.
Q. What is the life expectancy of uPVC?
Koemmerling windows are designed for 40 years of service life and up to 5 times recycle of materials
Q. Is uPVC cheaper than aluminium?
Yes, uPVC is cheaper
Q. What is better, uPVC or Aluminium?
The two systems are different and comparison needs to be based on the specific needs for each application. Both systems can be equally good regarding thermal performance. uPVC can be less expensive but may have size limitations when compared to aluminium which is a stronger material. Colour choices are also practically unlimited in aluminium.