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Energy efficiency - living comfort
and environmental protection
Innovative high-quality uPVC windows
cut energy losses to a minimum. With ! Please note
uPVC windows you can contribute to the The lower the
conservation of the increasingly scarce U-value, the better!
resources and to the reduction of pollutant
emissions. Combine environmental pro-
tection and living comfort by insulating
with uPVC windows.
The U-value determines the heat transfer coefficient of the
material. The w in this term stands for the entire window.
The calculation of this is based on the U-values and the U-Value (Uw)
sizes of each single material of all components. This means = U-value glazing (Ug) * Area glazing (Ag)
the glass, the frame material as well as the psi-value, which + U-value frame (Uf) * Area frame (Af)
describes the heat flow generated through the insulated + Psi-value ( Ψ) * length of the edge bond (l)
glass edge with the distance piece. / Area glazing (Ag) + Area frame (Af)
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