Glazing

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Purpose designed to suit glazing systems in place of double or triple glazing. Super slim 41mm deep profile and fully tested by BSRIA to EN with rain rejection levels up to Class A. Many of our customers have original shutters in their listed or period homes. Because we custom design each CosyGlazing installation to work with original features, our integrated sash and casement window options can usually be fitted without the need to adjust original shutters. For casement windows, CosyGlazing sits perfectly either on the window frame, for a fixed solution. Or if you want your windows to open and close as they always have, we have developed modified traditional catches and stays to allow for the CosyGlazing unit to be fitted directly to the casement.

Ultra-thin from as little as 7.7mm compared to 44mm for triple glazing, it’s great for listed historic properties or new builds looking for a sleek slimmer aesthetic. Learn more about why secondary glazing provides the most effective levels of noise reduction. Secondary glazing is scientifically proven to reduce noise in your home by up to 54 decibels, giving your windows unrivalled levels of acoustic performance. Perfect for built-up areas such as homes near trainlines or under flightpaths. Once they’re ready, our installers fit your windows on a day that suits you. Our team show you how to use your new double glazing and make sure you’re happy.

This, together with concealed draught proofing routed into every edge of the casement, will ensure your casement window functions beautifully and keep you warm and cosy too. Double glazing, while less insulated, allows more sunlight and free solar heat into the home, making it ideal for South, East or West-facing windows. Triple glazing, in contrast, retains more indoor heat and provides a stable temperature, allowing you to sit comfortably by the window regardless of outdoor conditions.
While both options improve efficiency, triple glazing cost has its potential drawbacks, such as added weight and reduced light transmission, which can be a concern for period homes. Vacuum glazing cost may be higher upfront, but for many, the aesthetic and performance benefits outweigh the disadvantages of triple glazing in sensitive restoration projects. However, it’s important to weigh up the disadvantages of triple glazing, such as the added weight and higher triple glazing cost, particularly when comparing it to more modern alternatives like vacuum glazing. While vacuum glazing cost can also be a consideration, it offers better performance in a slimmer profile, making it ideal for heritage or listed properties.

The two panes of glass and the air gap between them work together to reduce the amount of heat that is transferred through the window. This means double glazing helps to keep your home warmer in the winter and cooler in the summer, which can result in lower energy bills and increased comfort. • Triple glazing is more robust - While it is difficult to break high quality double glazing, triple glazed windows offer superior strength. The additional pane of glass adds extra strength to the structure and provides more impact protection.
High quality double glazing can reduce noise levels by approximately 35 dB, and triple glazing often achieves similar results. While good quality triple glazing can offer enhanced acoustic insulation, it really depends on the products, materials used and the installation. Windows manufactured with acoustic glazing often feature thicker glass, laminated layers and a wider gap between each pane.
Understanding the construction of modern windows can help make this decision easier. This lower U-value target is easily met by triple glazing but not by double glazing. As a result, homeowners are already starting to choose triple glazing for their homes, a trend which will accelerate as we get closer to the 2025 deadline. In 2025, the UK government will introduce a Future Homes Standard for new build homes to be future-proofed with low carbon heating and world leading levels of energy efficiency.