High-tech Glass for Comfort and Reduced Heating Costs

Even the double glazing unit with standard argon filling achieves 1.1 W/m2K (Ug-value as per EN 673) – at a light transmittance of 80 percent. A combination for excellent comfort. The higher thermal insulation of “iplus E” also reduces the energy consumption, which in view of increasing heating costs and the Energy Performance Certificate (as of 2006) is a major issue for house-builders.

The innovative low-E coating provides for exceptionally high light transmittance (tL = 80% as per EN 410). The glazing is thus particularly suitable for domestic construction where plenty of natural daylight is desired. It also remains neutral in colour (Ra = 97). With a solar factor of 60 percent, iplus E achieves passive solar energy gain.

Inside the glazing unit is the extremely thin iplus E coating, on the inside pane facing the gap between the two panes. It thereby is protected from external impact. It has a very low emissivity (therefore low-E or low emissivity coating) and reflects heat radiation almost completely into the building. The gap between the two glass panes is filled with an inert gas (usually argon).