Fernando Cansing 5,0 11 Apr 2026 Google

The installation of our new windows was fluent and well finished. Elroy y Patrick were very professional and respectful during the installation.

Pier Bakker 5,0 11 Apr 2026 Google

Kozion replaced all windows, window frames, outside doors and renovated 2 dormers. Very happy with the result, advice, quality and after care. Good price vs quality ratio.

cheetalover 5,0 11 Apr 2026 Google

Over the past three days, the Kozion installers installed new uPVC window frames with triple glazing for both the front and back of the house. One window will have to wait a bit (I'm still saving up for that 😉), but that will definitely happen. I'm incredibly happy with the result: it looks truly luxurious and sleek. Everything is very neat and tidy, not only on the outside but also inside. I'm also very happy with the viewing edge on my front door – a nice bonus! Even the paving by both the front and back doors is neatly flush with the threshold. I think that's really great. The installers were friendly, so a cup of coffee was a must ☕. And before they left, they left everything neat and tidy. I'm also thrilled that my double sliding windows are finally a thing of the past. I used to have to clean the windows twice, both inside and out... now just once 😄. I'm already receiving lots of positive feedback from neighbors, family, and friends. In short: highly recommended!

Marcel van Oirschot 5,0 11 Apr 2026 Google

Very satisfied with Kozion window frames. Both with the preliminary process with Maurits and with the installers, Jeroen and Vincent [Vinny]. They're top-notch people who know what they're doing and also enjoy a good laugh. The dormer renovation, replacement of the 10 window frames including triple glazing, and the back and front doors exceeded our expectations. We highly recommend Kozion to everyone.