Crystal Units

C.U.in is changing the way homeowners and specifiers think about glazing upgrades.

Designed to fit within existing window frames, C.U.in delivers the thermal performance of triple glazing without the disruption of full window replacement. In winter, it helps retain heat and improve insulation. In summer, it helps reduce solar heat gain to keep interiors more comfortable throughout the year.

The result is a lighter, more energy-efficient glazing solution that improves comfort, lowers energy loss and supports more sustainable buildings.

No new frames. No major disruption. Just smarter glazing performance. Great for heritage upgrades.

If you’re an installer, architect or building contractor and would like to see more of our factory, products, and the way we manufacture our glazing solutions, speak to our team about arranging a visit to our North London Factory.

From advanced insulating glass to specialist glazing technologies, we’re proud to show how Crystal Units combines innovation, precision and quality throughout the manufacturing process.

Get in touch to learn more about what we do behind the glass.

Strong partnerships make all the difference.

We’d like to recognise Lincoln Window Design & Lincolnshire Bi-Folding Doors, our C.U.in Gold Partner, for consistently delivering excellence on every project. Their expertise, attention to detail, and commitment to quality ensure every installation meets the highest standards.

Trusted, reliable, and focused on getting it right, every time. We’re proud to work alongside a team that shares our passion for high-performance glazing and outstanding results.

Strong local partnerships are at the heart of what we do.

We’d like to recognise Prizma Windows in Park Royal, London for their continued commitment to quality and reliability across every project. Their expertise in glazing, attention to detail, and consistent delivery make them a trusted name in the industry.

It’s always great to work alongside a team that takes pride in their work and understands the importance of getting every detail right.

We look forward to many more successful projects together.

Getting a quote for glass balustrades shouldn’t be complicated, and it should never mean compromising on quality.

At Crystal Units, we combine over 30 years of glazing expertise with advanced manufacturing to deliver high-performance, safety-critical glass you can rely on. Whether it’s for a residential project or a large-scale development, every balustrade unit is produced to exact specification using premium safety glass.

You’ll get a clear, tailored quote based on your project requirements, backed by fast turnaround times and a team that understands the demands of real-world installations.

If you’re planning a project and need reliable, high-quality glass balustrades, speak to us and we’ll guide you through the process.

Great to welcome industry partners through the doors 👏

We recently hosted Company of Glass Sellers and the Glass & Glazing Federation (GGF) for a factory tour here at Crystal Units. It’s always valuable to open up the process and show what goes into manufacturing high-performance glazing, from raw materials through to finished units.

We hope the visit gave a clear insight into the level of detail, precision and quality control behind every unit we produce. It’s one thing to talk about performance, it’s another to see how it’s achieved in practice.

Thanks again for taking the time to visit, we hope you found it both interesting and worthwhile. Always happy to share what we do and strengthen connections across the industry.

If you’d like to arrange a factory tour and see the process for yourself, just get in touch with the team.