A partnership that’s raising the roof

• October 14, 2025

Corsham Building Plastics’ partnership with Sheerline Bespoke is about more than supply – it’s about trust, service, and shared standards.

When it comes to high-performance aluminium glazed roofing systems, it’s not just the products that stand out – it’s the partnerships behind them. One such standout is the long-standing relationship between family-run Corsham Building Plastics and Sheerline Bespoke, Sheerline’s ‘specialist product focused’ division that provides easy access to installation ready kits for the S1 Roof Lantern and S2 Glazed Roof.

At its heart is a shared commitment to quality, service, and innovation, and nowhere is that more evident than in Corsham’s exclusive use of the Sheerline S1 Roof Lantern, which has quickly become their go-to lantern solution.

Established in 1986, Corsham Building Plastics has built a strong reputation over nearly four decades for supplying and installing high-quality windows, doors, and glazed extension solutions across Wiltshire and beyond. Still family-run today, the business is now led by directors Adam, Luke and Paul Gingell.

“All of our installers are employed directly by us,” said Luke. “We don’t use subcontractors, so we know the quality of what’s being fitted – and that’s key to what we offer.”

The perfect match

It’s this focus on quality and control that led Corsham to align with Sheerline Bespoke, initially via Prefix Systems which was set up by Sheerline Bespoke’s Chris Cooke and Chris Baron in 1996. And once the business made the switch from other roof lantern systems to the S1 Roof Lantern they have never looked back.

“We’ve worked with the Chris’ since Prefix, and we basically started using Sheerline’s S1 as soon as Prefix did,” explained Luke.

“We only supply the S1 lantern now, but it’s not just the product, it’s the relationship. I’ve worked with Chris and Chris for over 10 years. The service, support and knowledge we get from Sheerline Bespoke is excellent.”

The S1 advantage

The S1 aluminium lantern is engineered for performance and aesthetics. With a slim, low-profile design, clean lines, and exceptional thermal efficiency, it ticks all the boxes for modern glazed roofs. Installers appreciate its ease of fitting while homeowners and architects love its sleek look.

“The S1 Roof Lantern is second to none,” said Luke. “Our fitters love fitting them; they’re simple and quick to fit, and the slimline profile is just completely different to other systems. You look at the alternatives, some are boxy, bulky, but the S1 is in a league of its own.

“Another huge difference is the flush fit roof vent and the fact it sits flush with the frame. What makes it different is the roof end sits flush with the frame. It doesn’t look like a bolt-on product – it’s designed to be part of the structure. That’s why we have repeat business from builders and architects. Once they’ve seen it, they stick with it.”

Looking to the future

While Corsham’s bread and butter remains the S1, they’ve also used the S2 roof system on more traditional glazed extensions. “It’s a nice slimline system,” said Luke. “Again, it installs well – but the lantern market is definitely where things are heading.”

All eyes are now on the launch of Sheerline’s S3 architectural roof system, the latest addition to the S Series range, which made an impression on Luke at the FIT Show

“As soon as we saw the S3, it was a ‘wow’ moment,” Luke said. “The U-values, the look, the roof vents, everything about it was impressive. I’ve already sent Chris a few quote requests.”

For Chris Cooke, Commercial Director at Sheerline Bespoke, the relationship with Corsham goes beyond business.

“I’ve known Luke since Prefix,” Chris said. “He knows what good looks like, and he holds us to a high standard. That’s exactly the kind of relationship we want, we know what to expect from each other.”

And that trust is reinforced by results too, added Chris: “Corsham have been hugely successful with the S1. It’s great to see a quality-focused installer taking our product and running with it. And with the S3 coming soon, there’s even more potential to grow together.”

To find out more about Sheerline Bespoke, call 01332 978 070 or visit https://www.sheerlinebespoke.com/