Whether you are upgrading windows in a home, commercial site, or heritage property, you will need to meet Building Regulations double glazing requirements. These rules ensure that new windows are safe, energy-efficient, and installed to a standard that protects the structure and the people inside it. The regulations can feel overwhelming at first. Nevertheless, once…
JOIN US AT THE LISTED PROPERTY SHOW 2026 AT OLYMPIA, LONDON The Listed Property Owners’ Club is returning to London Olympia on 30th and 31st January 2026 and once again, CN Glass will be exhibiting. This is your opportunity to meet the most comprehensive collection of regional and national specialists in conservation, restoration, and glazing…
Any successful building upgrade starts with a clear, practical plan, and glazing is no exception. If you want reliable performance, long-term value, and full compliance, a strong commercial glazing specification guide is essential. The right sealed unit affects energy use, comfort, safety, and how people experience the building every day. With so many glazing options…
Drafts: Run your hand around the edges of windows and doors – can you feel cold air coming through? Seals: Inspect rubber seals for cracks or gaps. Worn seals can let heat escape. Condensation: Look for moisture between double-glazed panes – this may indicate a failed unit. Locks & Hinges: Ensure doors and windows close…
During the summer holidays of 2025, CN Glass, the leading installers and manufacturers of windows and doors across Oxfordshire and the Cotswolds, completed two major school window replacement projects following a competitive tender process. Based in Banbury, our expert team delivered high-quality, energy-efficient installations at St John Fisher School in Oxford and Blessed George Napier…
CN Glass in Banbury are a second-generation, family run business who have been serving the areas of Banbury, Oxford and the Cotswolds for over 50 years, manufacturing and providing glass and glazing solutions, for both commercial and domestic clients, and are well-known leading installers of windows and doors. Based at their premises in Banbury and…
With the colder months behind us and the promise of longer, sunnier days ahead, now is the perfect time to give your home the refresh it deserves. But where do you start? While major renovations can be costly and time-consuming, upgrading your windows and doors is an impactful, practical, and efficient way to enhance your…
With the summer now over and the winter months looming, it’s that time of the year again where we start to feel a chill in the air. The frosty mornings, autumn leaves and that extra jumper lead to a key question for homeowners – ‘how do I keep my house warm?’ As well as heating…
We have worked on many double glazing for schools projects. Double glazing for Schools, colleges and
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