Roger Hartshorn
CEO
/ A FRESH APPROACH TO ALUMINIUM
WHAT MAKES
US DIFFERENT
Driven by innovation
Sheerline is the innovative brand of aluminium windows, doors and roof lantern systems, designed and extruded by Garnalex. Launched in 2020, the Sheerline system was created to revolutionise the way aluminium windows were fabricated, installed and sold.
Garnalex was formed by Roger Hartshorn (one of the fenestration industries leading figures) in 2018 and is one of only a few UK based aluminium system houses.
Vertically integrated
Our fully vertically integrated, state-of-the-art production facility, enables us to offer outstanding levels of service and agility that Sheerline customers rely on. Giving us the control needed to ensure all Sheerline products are manufactured to the highest possible standards.
With over £19M invested to date
Garnalex’s team of technical experts looked at every aspect of aluminium windows and doors, from how they’re made and installed, how they perform and look, to the service and support required, resulting in the innovative Sheerline range.
We pride ourselves in offering industry leading quality, reliability, and agility of supply, all delivered by our experienced team of fenestration professionals.
Our Mission
Our mission is to transform what customers expect from aluminium. From design and testing, to the manufacture of every major component at our state-of-the-art facilities, we are passionate about delivering windows that operate, perform and look exceptional, keeping you warm and secure for many years to come.
Made in Britain
From design and testing, to the manufacture of every major component at our state-of-the-art facilities, we are passionate about every element that goes into producing the Sheerline system. With greater control over our supply chain than competitors, we can offer customers more reliable supply and unbeatable service.
Onsite Painting
Continuing our investment in our state-of-the-art production facility, we have recently invested over £1.3 million in our own Qualicoat ‘seaside class’ approved powder coating facility. Bringing the most important secondary process that happens to our Sheerline aluminium range after it has been extruded, in-house to ensure the best quality.
Sustainable at our Core
Our state-of-the-art, energy efficient SMS HYBREX press delivers energy savings of up to 55% compared to traditional presses. Our patented construction method also vastly reduces fabrication waste. This coupled to the high level of energy efficiency built into every product helps build towards a greener future for all.
Built on Experience
Sheerline was founded by Roger Hartshorn, who has more than 40 years experience in the fenestration industry and successfully founded and sold two of the UK’s largest profile systems companies (Eurocell plc and Liniar). Driven by an experienced team of window and door experts, Sheerline is built on solid foundations.
Find out what goes into powder coating every Sheerline product
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Our senior team
Key Accreditations
Made in Britain
Made in Britain recognises excellence in manufacturing and promotes British-made products across all sectors. Giving businesses and consumers confidence and clarity that they are buying British.
Quality Management System
The Sheerline manufacturing site has achieved ISO9001: 2015 accreditation, meeting British standards for a robust, quality management system. Demonstrating the strength of our dedicated management processes and procedures.
ALFED
Sheerline is proud to be a member of The Aluminium Federation, which represents businesses who process, trade and work with aluminium, promoting best practise within the sector.
Approved Applicators
Sheerline underwent thorough approval process, which involved a detailed application outlining every step of the company’s powder coating process and submitting regular samples for testing. Ensuring beautiful, consistent powder coating.
PAS 24 Security
PAS 24 is a standard of testing that measures the security performance of windows and doors in the UK. Developed by BSI (British Standards Institution) its designed to make homes more secure by ensuring that windows and doors are robust enough to resist attack.
Security Accreditation
Sheerline windows and doors all come with optional SBD accreditation. The official UK Police initiative ‘designing out crime’ through physical security.
Our Latest Awards
Oresa Growth Index
9th fastest UK growth
Aluminium Systems Company of the Year
Sheerline
Rising Star
Ben Hartshorn
Managing Director of the Year
Roger Hartshorn
New Product of the Year
Prestige Patio Door
Best Technical Innovation
S1 Lantern Roof
Lifetime Achievement Award
Roger Hartshorn
Best Technical Innovation
Sheerline System
Our reputation is built on trust
Contact us for more information, or to explore the next steps towards becoming a Sheerline customer