Sheerline announces series of promotions

Sheerline has announce several promotions within its senior leadership team.

Ross Hartshorn is broadening his role to become Managing Director, while Ben Hartshorn is formalising his current role as a key part of the product research and development team with a promotion to Technical and Design Director.

Roger Hartshorn will remain the Managing Director of Garner Holdings, with Emma Arrell as the Group Finance Director.

Having been involved with Garnalex and Sheerline from the very beginning, Ross and Ben are said to understand the core principles that form the foundation of the business and what is required to continue to achieve long-term sustainable success. This puts them in the ideal position to continue to drive the business forward.

When Ross joined Garnalex it was with a view to help with the development, design, and launch of Sheerline as he’d already been working in the fenestration industry for 10 years at Liniar. In his current role he leads the production management team, and has driven ongoing efficiency improvements, including a world class OTIF of 99.4% for 2025.

While Ben was new to the fenestration industry when he joined Garnalex, he’s been putting his mechanical engineering experience to good use. As well as being instrumental in the development of the Classic Heritage Door and Sheerline’s new inline patio, which launches at the end of Q1, he provides first class technical support while overseeing the technical team.

Roger Hartshorn, Managing Director of Garner Holdings, said: “Any good business owner knows the importance of succession planning. For me, it’s essential my focus and legacy are maintained. Hence this news won’t come as a surprise to many – it’s a process that has been years in the making and will ensure the next generation starts to take the operational lead under my guidance.”

“Our customers can rest assured that Garnalex will continue to operate just as efficiently as it does today. I’m looking forward to supporting the Group and team in a more strategic role, while continuing to champion the vision we’ve built together,” he added.

As well as having oversight of the business, Roger will be working closely with the relevant partners on the build of the new facility in 2026/2027.

To find out more about Sheerline, visit: It’s aluminium, but not as you know it – Sheerline or email info@sheerline.com.