Your local Timber & Aluminium Retrofit Double Glaziers

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Quality Double Glazing

If you’re tired of cold winter mornings and mopping up condensation, then you need to call our team of double glazing professionals today for a no obligation chat about the benefits of quality double glazing.

We have thousands of satisfied customers in the Waikato and Bay of Plenty. We’d love for you and your family to be our next.

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We specialise in all things double glazing—bringing comfort, efficiency, and style to homes and buildings of every kind. Whether you're upgrading existing timber windows with retrofit double glazing, installing sleek new aluminium joinery, or working on a custom architectural project with curves and unique shapes, we’ve got the expertise to make it happen. From standard replacements to one-of-a-kind solutions, our team is here to deliver quality workmanship and tailored advice for every window and door.

Our Services

A True Family Business

At Double Glazing United, we’re proud to be a locally owned and operated family business. Since 2010, we’ve been helping Kiwi homeowners create warmer, healthier, more efficient homes with genuine double glazing and expert workmanship. With a close-knit team, strong local partnerships, and a focus on quality you can trust, we treat every home like it’s our own.

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Take a look at some of the homes and projects we've helped transform. Whether it's the clean lines of aluminium joinery, the timeless charm of timber windows, or the creativity behind our custom projects, these galleries show what’s possible when quality meets craftsmanship.

Photo Galleries

  • Aluminium

    Enjoy a warmer, drier home all year round with retrofit double glazing with your existing aluminium joinery.

    Aluminium Gallery

  • Timber

    Timber windows are our specialty. Replace your existing single glaze with retrofitted fully sealed double glazed units.

    Timber Gallery

  • Replacement & Custom Projects

    If you can do it with glass, you can do it with double glazing! Talk to us about replacement joinery or custom project today.

    Custom Project Gallery

  • We are so happy with our new double glazing. The job was significant but, from the very beginning, Double Glazing United talked us through the process and made us feel very confident about our choice of company. The work was done professionally and quickly. The installers were great and made the whole process easy for us. We would strongly recommend the company and their product.

    The Howard Family, Cambridge

  • Hi there Nadia and Wilson, We thought that it’s time we told you what a great warm winter we had in 2020 with the double glazing that you installed for us in January. We both thought the whole installation process worked well, and we got a good result, so it’s worth saying so. We are really pleased with this, so thanks again.

    The Fisher Family, Cambridge

  • Thanks so much - I am really pleased with my new windows; you guys did an awesome job. My stained glass windows have never looked better. I will definitely be saving up so I can get another room done.

    F Moyer, Hamilton

  • I’d also like to extend a big thank you to you all for providing the best service ever! I am very pleased with how the windows and doors turned out and only wish I had come to you earlier. The boys did a fantastic job. They really did go all out to make sure that everything was installed perfectly. I will definitely be recommending you to friends and family and will get back to you shortly to finish the remaining doors and windows.

    K Nicolson, Hamilton

  • Just wanted to say a big thank you for the windows last week. They look great and the girls are very chuffed with how "clean" they are because apparently it doesn't even look like they have windows in! We noticed last week one morning that the old window had heaps of condensation and the new one had nothing, so stoked! So thanks!

    H Griffin

  • Double glazing United has been an excellent company to work with from the advice they offered at the start all the way through to the fitting of my windows. I am so happy with the result and my house is both warmer and quieter. The staff go the extra mile and are delightful to work with. The cherry on the cake is that my bank, West PAC, lends up to fifty grand interest free to cover costs! I have friends who went with other companies and ended up with windows that didn’t fit and were a big disappointment. You won’t be disappointed by the service or product that DGU provides.

    S Quinn

  • We recently had the absolute pleasure of having a significant portion of our home windows and sliding doors retro double glazed by the team at DGU. Our experience has been seamless from the very first contact made to Nadia in the office, to the first initial scoping and measuring and finally to the completed work down by Wilson and the installation team. The team did what they said they would, in the timeframe agreed and we are very happy with the results. The DGU "family" have been a delight to deal with and we would have no hesitation recommending them and their work to anyone. We would like to express our thanks to Nadia, Wilson and the DGU installation team and should we ever have the need to use their services again in the future we will be doing so.

    Rob and Elvi, Te Aroha

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Explore the possibilities of enhancing your home with premium double glazing.