Sheerline recently held several open days for its’ installer and fabricator customers at its’ HQ in Nether Heage, Derbyshire.

It provided an opportunity for senior members of the team to highlight Sheerline’s achievements over the past few years and showcase its’ new products that will be available from early 2023.

This includes a new Prestige Lift & Slide Patio Door, which completes the Prestige door range.

The technical design team have worked hard to ensure there is consistency across the Prestige range for fabricators and installers, therefore the U-values match every item within the Prestige range, achieving 1.0 triple glazing and 1.4 with double glazing. The new door also uses the same proven clip-in beads as the rest of the range – further evidence of Sheerline’s commitment to integrated system design.

It integrates seamlessly with other Sheerline products, so homeowners don’t have to worry about mismatched doors and windows. It is Part L compliant as standard, and as with all Sheerline products, providing exceptional thermal efficiency through Sheerline’s proprietary Thermlock® technology.
In addition, it maximises the views outside by offering slim sightlines and is available in stepped and contemporary styles. With a choice of four threshold options, the option for triple tracked options that allow for easy drainage, the system also features fully retracting hook locks and flush jambs to avoid the use of protruding pegs that can snag on clothing.

The team also took customers through the benefits of the new beaded option for the ultra-slim, ultra-secure Classic range as well as showing how fabricator and fitter friendly the new SBD option for the award winning S1 lantern is.

Darren Pusey, Supply Chain & Technical Director, Lister Windows commented: “Lots of things have impressed us about Garnalex–they’re dynamic, exciting, supportive, and they’ve got a fresh approach to the aluminium industry, but with years of experience to back them up.”

“They’ve got high-performance U-values for every product within the Prestige range, which is a huge achievement and an excellent selling point for us. And because of Sheerline’s approach, they’ve brought to market a family of suited products that genuinely work well together, look good, and use interchangeable parts,” he added.

After showcasing its’ new products, the team provided a comprehensive tour of Sheerline’s state-of-the-art facilities to give customers an insight into the manufacturing process. This included the company’s SMS HybrEx Press, which can extrude 4 tonnes of aluminium per hour. Garnalex prides itself on being one of very few manufacturers in the UK to extrude their aluminium in-house. With the most integrated production facility in the UK.

There was also an opportunity to see the in-house powder coating plant in operation, which has benefited from over £1.2 million in investment and was recently awarded full Syntha Pulvin applicator status. Aside from enhancing Sheerline’s quality control process, powder coating in-house means customers benefit from agile lead times.

Sheerline CEO, Roger Hartshorn said: “We’re delighted with the success of our customer open days and look forward to holding more in the future. It’s a great opportunity for us to showcase what we’re doing at Sheerline, which is pushing the bounds of what is possible within the fenestration industry by using technology to innovate and set ourselves apart from our competitors.”

For more information, visit the website here: or, to find out about the next open day, contact the team directly at: