Authentic sash windows meet top thermal specifications with SWISSPACER

A traditional sash window from Masterframe

Masterframe is a specialist fabricator of heritage-style PVC-U sash windows, producing the most authentic sash windows on the market for the last 31 years. For the last 10 years, Masterframe has used SWISSPACER warm edge spacer bars inside its sealed units.

The company manufactures four styles of sash window, from the competitively priced Imperial Collection, through to the Vintage Collection which is ideal for conservation areas and restoration. All styles use SWISSPACER for unobtrusive warm edge excellence, helping Masterframe meet their specification requirements. Masterframe use SWISSPACER ULTIMATE in both white and black, in sizes 8, 10, 14 and 16mm.

Ramon Rabett, Technical Director at Masterframe comments: “SWISSPACER is ideal for fulfilling the PSI values, and is a ‘hidden’ component that helps our windows achieve ‘A’ and ‘A+’ energy ratings easily and effectively.

“In addition to contributing to excellent thermal specifications, with SWISSPACER we can also fix internal duplex bars to recreate an authentic Georgian look and we can bond our applied Georgian bars onto the surface of the glass using our patented Georgie® clips.”


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: -    Authentic sash windows meet top thermal specifications with SWISSPACER
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1 message received  22/01/2021 12:59:55  18113