Crystal Units

Double-Glazed System.

Not all high-performance glazing technologies are new. C.U.in has been independently tested, proven in the field, and specified on projects across the UK for over a decade.

Using advanced suspended film technology, C.U.in achieves U-values as low as 0.4 W/m²K without the weight and thickness associated with conventional triple glazing. By suspending a low-emissivity film within the cavity, heat transfer is significantly reduced while maintaining a slim, lightweight insulated glass unit that can be incorporated into a wide range of glazing systems.

Unlike many of the latest thin triple-glazing solutions entering the market, C.U.in offers a proven track record. Its long-term performance has been validated through independent testing and real-world installations across residential, commercial and heritage projects, giving fabricators, installers and specifiers confidence that the product performs not only on paper, but in service.

Why choose Crystal Units?
• U-values as low as 0.4 W/m²K
• Proven suspended film technology
• Independently tested and field proven
• Successfully installed on projects across the UK
• Expert specification support from our in-house technical team
• Fast UK manufacturing with dependable lead times

At Crystal Units, we don't simply manufacture insulated glass units. We help you specify the right glazing solution from the outset, reducing risk and delivering confidence on every project.

https://crystalunits.com/c-u-in-triple-glazed-glass/

If your customers are looking for exceptional thermal performance without the weight and thickness of conventional triple glazing, it's time to discover C.U.in.

Using advanced suspended film technology, C.U.in delivers U-values as low as 0.4 W/m²K, helping you achieve outstanding energy performance while fitting into standard double glazing frame depths. It's lighter than traditional triple glazing, easier to handle and install, and can be combined with Low-E, solar control and laminated glass to suit almost any project.

Why choose Crystal Units?

✔ U-values as low as 0.4 W/m²K
✔ Suspended film technology for market-leading insulation
✔ Triple glazing performance in a slimmer, lighter unit
✔ Expert technical specification and glazing advice
✔ Fast UK manufacturing and dependable lead times

We're more than an insulated glass manufacturer. We're your technical glazing partner, helping you specify the right glass first time and delivering confidence on every project.

Looking for a kitchen splashback supplier you can rely on?

At Crystal Units, we manufacture bespoke painted glass kitchen splashbacks for installers, kitchen companies and glazing professionals, helping you deliver a premium finish with minimal hassle on site.

With virtually any colour available, we can colour match to kitchens, worktops or brand palettes, giving your customers complete design freedom.

Why do installers choose Crystal Units?

• Toughened safety glass manufactured to your exact sizes
• Virtually any RAL or bespoke colour painted directly onto the glass
• Precision cut-outs for sockets and switches
• Premium polished edges and quality finishing
• Fast, dependable UK manufacturing
• Technical support from an experienced glazing team

Every splashback arrives manufactured to specification, helping make installation quicker, reducing the risk of errors and ensuring a finish your customer will love.

When you choose Crystal Units, you're choosing more than a glass manufacturer. You're choosing a technical glazing partner committed to helping you deliver every project with confidence.

Delivering confidence, not just glass.

A great example of how specialist glazing can enhance modern developments.

For the Rivermark Taylor Wimpey Sales Information Centre, Crystal Units manufactured bespoke shaped insulated glass units alongside precision factory-applied glazing bars, creating a striking feature that combines contemporary design with traditional detailing.

Projects like this require more than standard glass manufacturing. They demand accurate design, precision production, and the technical expertise to ensure every shaped unit and glazing bar aligns perfectly on site.

At Crystal Units, we help glazing companies get the specification right first time. From bespoke shapes and decorative glazing bars to high-performance insulated glass units, our in-house technical team supports every stage of the project, helping reduce installation time, minimise call-backs, and deliver a premium finish, with warranty.

Because we're more than an IGU manufacturer. We're your technical glazing partner.

The Crystal Units Fleet, Delivering Excellence Every Day.

Every insulated glass unit we manufacture is designed with precision, and every delivery is made with the same commitment to quality.

Our fleet plays a vital role in ensuring your glazing arrives safely, on time, and ready for installation. Whether it's bespoke architectural glazing, large-format insulated glass units, solar control glass, heritage glazing, or specialist products, we understand that reliable delivery is just as important as reliable manufacturing.

From our London manufacturing facility to projects across the UK, we're proud to support glazing installers, window manufacturers and façade contractors with dependable service from enquiry through to delivery.

Because at Crystal Units, we're not just delivering glass. We're delivering confidence.

Fleet Operator Recognition Scheme (FORS), demonstrating our commitment to safe, efficient, and environmentally responsible transport operations.

A great example of how the smallest details can make the biggest impact.

We're proud to have supplied our client Crittall Windows on the refurbishment of 50 Floral Street, Covent Garden, manufacturing bespoke insulated glass units featuring our factory-applied duplex astragal glazing bars with precision-engineered Fenestra joints The result is the authentic appearance of traditional glazing combined with the performance expected from modern IGUs.

By manufacturing and applying the glazing bars in our factory, every unit arrives ready for installation with consistent sightlines, accurate alignment and a premium finish. It also means the bars are covered under our warranty, giving installers and contractors added confidence long after installation.

For refurbishment and heritage-inspired projects where appearance matters just as much as performance, factory-applied glazing bars help reduce installation time, minimise site adjustments and deliver a finish that's built to last.

A fantastic project by Crittall Steel Windows and one we're pleased to have supported with glazing manufactured to the highest standards.

Delivering confidence, not just glass.