Patent approval for Stellar Slimline bi-fold

Epwin Window Systems has received full patent approval for the adjustable locking stile on its Stellar Aluminium Slimline bi-fold door.

The patented adjustable slimline locking stile is designed to enhance the door’s aesthetics. At the same time, its fine-tune adjustment between the lock and the keep assists with the setting of the door during manufacturing and installation.

It also eliminates the need for adjustable door jambs that, according to Epwin, complicate installation and affect thermal performance.

Neville Gleed, technical development manager at Epwin, said: “Securing full patent approval for the adjustable locking stile is another significant milestone for Stellar. This achievement reinforces our ongoing commitment to delivering advanced design solutions that give our customers a competitive advantage in a crowded market.”

The Stellar Slimline bi-fold door meets the requirements of the 2022 Part L Building Regulations, achieving a U-value of 1.4W/m²K with 28mm double glazing and 1.0W/m²K with 44mm triple glazing.

This is achieved through features including innovative thermal break technology that has low thermal conductivity. It also benefits from tailed glazing gaskets and an under-glass seal which breaks up the cavities behind and under the glass to further enhance its thermal performance.

Like all Stellar products, the bi-fold door is available in a wide range of Qualicoat-approved standard and non-standard RAL colours. The product is backed by a 25-year marine-grade surface paint finish guarantee for installations located within 5km of the coastline, and a 10-year guarantee for locations between 50 metres and 5km from the coast.

The system is also PAS24:2022 accredited