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Modern, Stylish and Energy-Efficient uPVC Windows

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  • uPVC Casement Window
  • Sliding sash bay window with a rose bush in the foreground.
    uPVC Sliding Sash Window
  • Infinity Flush Window
  • Infinity Casement
  • uPVC Windows, Secure for Peace of Mind

    Our uPVC windows offer both security and style. At Keswick Superglaze, we provide quality uPVC windows known for their excellent energy ratings, easy maintenance, and secure features.

  • Classic Casement Windows

    Our Casement window is our most popular window and it's available in two styles – an ornate finish to match traditional timber windows, or a straight bevel for a more modern ‘clean line’ look.

    White uPVC casement window with two panels, one open.
  • An Alternative to Traditional Timber Windows

    Our Residence 9 collection is specifically designed to be an alternative to traditional timber windows. All windows in this range are flush externally with a deep ornate detail internally.

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uPVC Windows in a Range of Styles to Suit Your Needs

We have something to suit all homes and tastes. From casement to tilt and turn styles, our double-glazed uPVC windows are the perfect all-rounder. Upgrade your home with Keswick Superglaze today.

Top Quality uPVC Windows at an Affordable Price

We take pride in offering the perfect blend of quality and affordability. Our uPVC windows are the epitome of security, easy maintenance, and outstanding energy ratings, providing a comprehensive solution for your home. 

What truly sets us apart is our commitment to providing both top of the range and budget-friendly uPVC options, ensuring you don't have to break the bank to enhance your home. With Keswick Superglaze as your trusted partner for all your uPVC window needs, you can enjoy top security, style and energy-efficiency.


Discover our Frequently Asked Questions all about uPVC windows. If there's something you'd like to know that isn't covered, feel free to reach out, and we'll gladly provide the information you need.

Double Rebated Traditional uPVC Windows

Two of the most important factors in choosing your windows are style and durability. We offer a broad selection of window options guaranteed to enhance your property's appearance. With our double rebated PVC and integral gaskets, they are designed to withstand even the harshest Cumbrian winds and rain, ensuring longevity and performance.