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The double glazing U-value measures the thermal transmittance and heat loss rate through a window assembly. Modern commercial glazing typically achieves a whole-window U-value between 1.1 and 1.4 W/m²K to ensure compliance with Building Regulations Part L. Lower values indicate superior insulation and reduced heat transfer. Thermal performance depends on the combination of low-emissivity coatings, inert gas fillings like Argon, and warm-edge spacer bars. Achieving these targets is essential for meeting ESG goals and reducing the operational carbon footprint of a building. High-performance glazing prevents heat escape and lowers the energy demand for internal climate control.

Laminated acoustic glass helps buildings meet environmental standards by integrating noise reduction with thermal efficiency. It features a specialised polyvinyl butyral interlayer that dampens sound vibrations to satisfy UK Building Regulations Part E. This material supports compliance with Part L requirements for energy conservation when installed within insulated units. Architects gain credits for BREEAM and WELL certifications by improving indoor environmental quality through superior sound attenuation. The glass maintains low U-values and reduces operational carbon by lowering the demand for artificial heating and cooling. This high-performance glazing ensures sustainable building certification and long-term occupant wellbeing.

With energy prices still placing pressure on school budgets, many leadership teams are looking for practical ways to reduce heat loss and improve classroom comfort without major disruption. One of the most effective upgrades is modern, energy‑efficient glazing. At CN Glass, we work with schools across Oxfordshire, Warwickshire, and the surrounding areas to replace ageing…

As building standards continue to rise, so does the demand for smarter, more efficient glazing. One of the most exciting developments in modern glass technology is vacuum glazing — a high‑performance solution that delivers exceptional thermal and acoustic insulation without the bulk of traditional systems. What Is Vacuum Glazing? Vacuum glazing does exactly what it…

In-house manufactured double and triple glazed sealed units improve building performance by providing superior thermal insulation under BS EN 1279 standards. Producing these high specification units locally in Oxfordshire eliminates outsourcing delays, ensures rigorous quality checks, and prevents transit damage. Utilising advanced warm edge spacer bars, insulating argon gas, and low-emissivity coatings significantly lowers U values and prevents internal condensation. This flexible manufacturing process accommodates bespoke specifications, from slimline heritage glazing for historic properties to heavy duty safety glass for commercial facades, securing long term durability and structural integrity.

Architectural Glazing is the use of glass as a fundamental, structural component in building design, often featuring large bespoke panels, expansive facades or frameless installations, such as those requiring our CN Glass two-part silicone sealant. Buildings designed using architectural glazing combine aesthetics, high-transparency and high-performance such as thermal efficiency, safety and, security to connect interior…

In February 2026, CN Glass launched their first ever Easter Doors competition. Pupils from local primary schools in and around Banbury were invited to submit their entries whereby they were asked to produce a colourful Easter scene which would be made into the glass doors of the premises showroom. The winning design, submitted by five-year-old…

Structural glazing has become one of the most striking features of contemporary architecture. From seamless glass walls to weight‑bearing walkways, it allows natural light to flood into a space while creating a clean, modern aesthetic that traditional building materials simply can’t match. At CN Glass, we specialise in designing, supplying and installing structural glazing solutions…

Selecting the right door for a commercial building is very different from choosing a door for a residential property. While both need to look welcoming and function smoothly, commercial doors must withstand heavy daily use, meet strict safety regulations, and provide enhanced security. If you’re planning a new shop front, office entrance, or industrial doorway,…