Heritage Trade Frames has reported continued momentum for its Stellar Slimline Bifold Door, with sales rising by more than 55% over the past three years as demand for aluminium products strengthens across the UK fenestration market.

According to the company, sales performance remained strong throughout 2025, reflecting both the growing popularity of aluminium systems and the competitive advantages of the Stellar Slimline Bifold Door. Lee Darcy, Sales and Marketing Manager at Heritage Trade Frames, said that sustained growth has been driven by a combination of market trends and product performance, adding that the system is well positioned to support further expansion into 2026.

The Stellar Slimline Bifold Door is designed to deliver contemporary aesthetics alongside robust thermal performance. Slim 117mm meeting stiles provide clean, modern sightlines that appeal to today’s homeowners, while the system meets current Part L requirements. It features 28mm double glazing as standard and can achieve U-values as low as 1.0 W/m²K when triple glazed, supporting energy efficiency without compromising on design.

Ease and speed of installation are also key selling points. Heritage Trade Frames reports that Stellar’s design allows installers to fit the system up to 20 minutes faster per pane, helping reduce time on site and improve productivity. Patented pre-gasketed knock-in beads simplify glazing, while ensuring a neat, consistent finish across every installation.

Beyond the product itself, installers benefit from Heritage Trade Frames’ wider operational strengths. All products are manufactured by experienced industry specialists, supported by responsive technical support, customer service, and ongoing investment in staff training, machinery, and IT systems.

Lee Darcy concluded that the continued growth of the Stellar Slimline Bifold Door highlights the importance of offering solutions that perform equally well for installers and homeowners, reinforcing its role as a core product within the company’s portfolio going forward.