Terminology made easy

Specialist Terminology for UPVC Windows

What are U-values?

A window's insulation value is becoming increasingly important, particularly in light of the ever-more stringent demands. By insulation value, we mean the U-value (heat transmission coefficient), which records how much heat the element loses per m2 .

In a nutshell, this means:

The lower the U-value, the better the window is at retaining heat.

Ug = Value for the glass (g = glass)

Uf = Value for the frame (f = frame)

Uw = Value for the entire window (w = window)

Specialist terminology for uPVC window types

There are lots of different types of window. They differ depending on their opening mechanism or the number of sashes, e.g. single or multi-sash windows, sliding windows, etc.

When it comes to selecting a uPVC window, the opening mechanism can play a decisive role if you're looking to make the most of your space or want to let in as much as air as possible.

Fixed glazing
Fixed glazing
Tilting windows
Tilting windows
Tilt and turn windows
Tilt and turn windows
Outward-opening windows
Outward-opening windows
Inward-opening windows
Inward-opening windows
Lift-and-slide doors
Lift-and-slide doors
Tilt-and-Slide doors
Tilt-and-Slide doors
Folding doors
Folding doors
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