VELUX has introduced a new vacuum insulating glass technology designed to deliver triple glazing performance using a slimmer, lighter two-pane construction.
Unveiled at a trade event in Cologne, the system replaces the gas-filled space between panes with a vacuum, significantly reducing heat transfer. Developed in partnership with Guardian Glass, the technology is engineered specifically for roof windows, where structural demands are higher than standard façade applications.
The solution enables comparable thermal and acoustic performance to traditional triple glazing while reducing overall weight and thickness. This is expected to support easier installation and improved efficiency in roof window design.
Two variants will be introduced. The first is a single vacuum glazing unit, which uses a double pane construction to achieve thermal performance similar to triple glazing. This design is lighter than conventional units and reduces the carbon footprint of the insulating glass.
The second is a hybrid system, combining vacuum glazing with an additional gas-filled pane. This configuration delivers enhanced insulation and sound reduction, offering performance aligned with high-efficiency glazing systems while lowering carbon impact.
Tina Mayn, Executive Vice President for Products & Innovation at VELUX, said: “This innovation reflects our focus on developing solutions that meet future requirements for thermal performance while supporting more sustainable construction.”
VELUX confirmed the technology is expected to launch in the UK and Ireland in 2026 within its Heritage range, with potential expansion into other European markets.
