What kind of Accessories are offered for Swisspacer Advance?
Accessories for Swisspacer Advance include linear connectors in various widths and colours, as well as corner keys such as flexible, gas (with/without hole), pre‑butylated and standard 90° versions.
The system can also be combined with our air‑equalization membrane Swisspacer Air, which helps prevent pressure‑related glass breakage during altitude changes. In addition, energy‑efficient Georgian bars are available to enhance the aesthetic appeal of window fronts.
What are the aesthetic options available for Swisspacer Advance?
The spacer features a matt, reflection‑free surface and is available in 17 different colours, allowing it to visually integrate with any window design.
Where can planners/manufacturers get reliable Psi values for Swisspacer spacers?
For calculation work, Swisspacer provides access to BF (Bundesverband Flachglas) Psi data sheets with representative, comparable Ψ-values for typical frame and glazing configurations—useful for projects across Germany/Switzerland/Austria and wider Europe.
Can Swisspacer improve the Uw value of a window?
Swisspacer influences Uw indirectly but decisively via the Ψg (Psi) value at the glazing edge. Choosing a thermally improved warm edge spacer reduces edge heat loss, which can help achieve better overall Uw results—especially in energy-efficient window designs.
How does the spacer bar affect condensation at the glass edge?
A thermally improved spacer bar increases the interior surface temperature at the glazing edge. This reduces the likelihood of condensation forming at the edge of the insulating glass unit — particularly in colder climates in Central and Northern Europe.
Does the window size influence the Uw value?
Yes. Larger glazing areas generally improve the overall Uw value because high-performance insulating glass (low Ug) can compensate for frame losses. Small windows with a high frame ratio often show slightly higher Uw values.
What is a good Uw value for modern windows?
In most European countries (e.g. Germany, Switzerland, Austria), modern energy-efficient windows typically achieve Uw values between 0.7 and 1.3 W/m²K, depending on building type and regulation. Passive house projects often require values below 0.8 W/m²K.
Is the spacer bar relevant for overall window energy efficiency?
Yes. Although small in size, the spacer bar has a significant impact on Uw and Psi values and plays a key role in the thermal performance of modern insulating glass units.
Does warm edge technology also reduce cooling demand in summer?
Yes. Warm edge spacer bars limit heat transfer from outside to inside, helping air-conditioned interiors stay cooler for longer and reducing cooling energy demand during warm periods.