Commercial Windows for Businesses & Developers

At CN Glass, we deliver commercial windows that keep buildings performing at their best. From modern offices to heritage refurbishments, we supply and install windows that meet the demands of today’s commercial environments.

Trusted Commercial Window Solutions for Every Sector

CN Glass is a FENSA-registered commercial window company serving customers across Oxfordshire and beyond. With over 50 years of glazing experience, we support a wide range of sectors, including retail, education, healthcare, industrial, leisure, hospitality, local authorities, and heritage environments.

Our in-house team manages everything from design and manufacturing to installation and aftercare of commercial windows, ensuring each project runs smoothly from start to finish. Whether it’s a single unit or a full-scale commercial development, we provide dependable, well-coordinated support at every stage.

Why Choose CN Glass for Your Commercial Windows?

Certified, compliant and industry-recognised

Commercial buildings must meet strict safety and performance standards, and we ensure every commercial window installation complies with current regulations. This includes Building Regulations such as Part L for energy performance and Part Q for security requirements.

As one of the most trusted commercial window companies in the region, our insulated glazing units meet BS EN1279, reflecting reliable performance and long-term quality. We also hold industry-recognised accreditations such as FENSA and TrustMark to ensure installations are completed safely and compliantly.

Built for performance and long-term value

Besides looking good, commercial windows need to perform well. Our systems are designed to deliver:

Energy efficiency with high-performance glazing and improved U-values
Acoustic control to reduce external noise in busy locations
Security and durability through robust frames and glazing options
Weather resistance suitable for harsh UK conditions
Low-maintenance materials that reduce upkeep over time

The result is a commercial window system that stands up to daily use and contributes to a healthier, more comfortable building environment.

Fully managed supply, installation, and aftercare

We don’t just fit commercial windows. We manage the entire process. This includes:

Full surveying, design, manufacturing, and installation
Project management tailored to commercial site requirements
Flexible installation schedules to minimise disruption

If repairs or adjustments are needed in the future, our team provides ongoing support to keep your commercial windows working exactly as they should.

Our Commercial Window Products

Aluminium commercial windows

Aluminium is the go-to choice for many modern buildings. It offers exceptional strength, slim sightlines, and long-lasting performance. Thermal breaks and high-spec glazing improve energy efficiency, making these commercial windows ideal for offices, retail units, schools, and contemporary commercial developments.

uPVC commercial windows

For a more cost-effective solution, uPVC commercial windows provide excellent thermal efficiency and reliable weather performance. They're popular in schools, residential blocks, and public-sector buildings thanks to their durability, low maintenance, and long lifespan.

Timber Windows

Timber windows combine natural warmth with modern glazing technology. They are often used in heritage projects, listed buildings, and architecture-led developments where appearance is a priority. With sustainable materials and high-performance glass, timber commercial windows offer a traditional style without compromising on efficiency.

Commercial Window Installation Services

New build commercial installations

Our commercial window company works with developers, architects, and main contractors to supply and install window systems suited to new-build commercial projects. Our team assists with specifications and technical details, including CAD drawings, performance recommendations, and suitable materials for each project type.

Commercial window replacement and refurbishment

Older commercial windows can affect energy ratings, comfort, and building performance. At CN Glass, we replace outdated or damaged systems with modern, efficient alternatives. For listed or heritage buildings, we offer like-for-like replacements that preserve the building’s character while upgrading performance.

Repairs and maintenance

Commercial buildings need reliable windows to function properly. Our repair and maintenance services cover:

Responsive callouts
Glass replacement
Hardware, lock, and hinge repairs
Draught-proofing and resealing

These services help extend the lifespan of existing commercial windows and reduce unnecessary downtime.

Commercial Windows for All Building Types

At CN Glass, we supply and install commercial windows across a wide spectrum of property types, including:

Retail units and shopfronts
Offices and business parks
Warehouses and industrial units
Schools, colleges, and universities
Hospitals and healthcare buildings
Hotels, leisure centres, and hospitality environments
Local authority buildings and public facilities
Residential developments and apartment blocks

Whatever the setting, we tailor commercial window systems to match the building’s performance requirements, usage patterns, and architectural style.

Case Studies and Recent Commercial Window Projects

Over the years, we’ve completed many commercial window installations across Oxfordshire and beyond. Our team handles each project with careful planning and attention to detail to ensure reliable, long-term results.

Lady Margaret Hall, University of Oxford

Completed a heritage window replacement project, upgrading energy efficiency while maintaining the historical character of the building.

Holy Trinity Primary School, Chipping Norton

Supplied and installed modern, energy-efficient glazing, improving insulation and classroom comfort.

Merton College, Oxford

Installed high-quality, bespoke timber-framed glazing, preserving the traditional architectural style while boosting energy efficiency.

Our Lady’s Catholic Primary School, Cowley

Replaced outdated windows and doors to enhance security, insulation, and the school’s overall aesthetics.

Our Process: From Survey to Installation

At CN Glass, we keep the installation process simple, transparent, and well-coordinated. From survey to sign-off, everything is handled by our in-house team for consistent and high-quality results.

1. Consultation and site survey

We begin by understanding the building’s needs, assessing the site, and reviewing any technical requirements.

2. Design and technical specification

Our team develops detailed specifications, selects suitable materials, and provides guidance on performance, regulations, and aesthetics.

3. Manufacturing and quality control

Commercial windows are manufactured to precise measurements, with quality checks carried out at each stage.

4. Professional installation

Our installers work safely and efficiently, coordinating with onsite teams and following agreed timelines to minimise disruption.

5. Aftercare, warranty, and ongoing support

After installation, we provide clear warranty details and ongoing support as needed. Communication remains transparent throughout, and we prioritise safety and reliable scheduling on every project.

Energy Efficiency and Sustainability

Energy performance is increasingly important for commercial buildings. CN Glass offers a range of sustainable glazing options, including:

Low-energy and low e glazing
Solar control glass for heat reduction
Recycling and waste reduction measures
Support for BREEAM, ESG, and sustainability targets

Our commercial windows help businesses reduce carbon output while improving comfort for staff and visitors.

FAQs

What are the best windows for commercial buildings?

It depends on the project. Aluminium is common for modern spaces, uPVC for cost-effective requirements, and timber for heritage or design-led buildings.

How long do commercial windows last?

With proper installation and maintenance, commercial windows typically last 20 to 40 years, depending on usage and materials.

Do you handle large projects?

Yes. As a leading commercial window company, CN Glass works with developers, contractors, and local authorities on projects of all sizes, from small refurbishments to multi-building developments.

Do you offer emergency repairs?

We provide responsive repair services to address urgent issues and keep buildings secure.

What areas do you cover?

We operate across Oxfordshire, the Cotswolds, and the surrounding regions, with the ability to support wider UK commercial projects.

Get a Quote for Your Commercial Window Project

If you’re planning a new installation or upgrading tired window systems, CN Glass can help. Our team provides practical advice, clear pricing, and tailored solutions for commercial and public-sector buildings. Get in touch today to arrange a survey or request a detailed quotation.

Let’s get in touch

Contact CN Glass today to arrange a quotation. Reach us in the following options.

Address:

Norton House, Beaumont Road
Banbury, Oxfordshire OX16 1SD

Phone Number:

01295 263 364

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Commercial Windows for Businesses, Developers, and Public Sector Projects

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