Green Building Store uses SWISSPACER to achieve Passivhaus standard

Energy Efficient Window from the Green Building Store

Green Building Store supplies a range of specialist products and services for low energy building projects and actively promotes the Passivhaus standard in the UK. Warm edge spacers play an important role in helping windows achieve this highly energy efficient standard. The company has specified SWISSPACER’s top performing warm edge bars in its windows since 2010.

When Green Building Store developed Ultra, a range of triple glazed windows certified to Passivhaus standard, it needed a spacer bar with exceptional thermal performance. SWISSPACER ULTIMATE was the obvious choice - a market-leading spacer bar with Psi values up to 0.029 W/mK and a correspondingly low U-value for windows and façades.

Like all SWISSPACER spacers, ULTIMATE is tried and tested for outstanding performance and long-lasting results. SWISSPACER is used in around 90% of all international Passivhaus installations, and ULTIMATE was the first spacer bar to be certified by the Passivhaus Institute.

Chayley Collis, Communications Manager of the Green Building Store comments: “All our windows are aimed at customers who want to improve the energy efficiency of their home. The key question is how much they want to improve; if customers are aiming for Passivhaus standard or very near, we recommend our Ultra range. All the windows in our triple glazed Ultra range incorporate SWISSPACER’s ULTIMATE warm edge spacer bar for maximum thermal performance.”

Karl-Theo Roes, SWISSPACER Head of Market Development Europe adds: “The Passivhaus idea was and is revolutionary, and has had a considerable impact on the European market over the past 20 years. But while the use of triple glazing and building to the Passivhaus standard is widely adopted in a number of other countries, the UK still has some way to go. We’re proud that Green Building Store, which is actively promoting this concept in the UK, has selected SWISSPACER for all their Passivhaus certified windows.”

Passivhaus is the fastest growing energy performance standard in the world. It aims to dramatically reduce the need for space heating and cooling, and typically cuts energy use and CO2 emissions by a factor of 10. Passivhaus buildings are comfortable and require minimal heating with a space heating demand predicted to be 15 kWh/m2/year.


Formed in 1998 Swisspacer is part of Saint-Gobain Glass Solutions. The company has experienced massive growth in the UK over the past 2 years. Its no-investment needed price benefit has been a key advantage that has attracted sealed unit manufacturers and window fabricators and fuelled its growth.

The manufacturing and head office is in Switzerland and a second manufacturing facility is established in Germany. Much investment is taking place to expand production capacity to ensure that Swisspacer is able to satisfy the dramatic ongoing growth in demand for its high performance warm edge spacer bar products.

Swisspacer has a growing network of leading sealed unit manufacturers in the UK and Ireland using its products, including Solaglas, Pilkington, Carey Glass, Supaseal, Custom Glass, Uniglaze2, Glass Systems, Clayton Glass, System 3 and Hollow Seal among others.

Swisspacer exactly matches the shape and dimensions of aluminium spacers, and being rigid and self supporting it handles in a similar way. And because there is no need to invest in expensive new machinery, it makes it very easy to get up and running with warm edge. Automated solutions are however available from Lisec, Saint-Gobain Seva and Rottler and Ruediger.

Independent tests conducted by IFT Rosenheim, the leading European independent fenestration research and test facility, showed that Swisspacer V had the best PSI values of all the other leading brands of spacer bar that were submitted for testing. Using Swisspacer thermal insulation (U-value) can be improved by up to 20%. Swisspacer V and Swisspacer perform very well in the Window Energy Rating Scheme.

News title: -    Green Building Store uses SWISSPACER to achieve Passivhaus standard
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