Why U-Values are Important for Windows

U-values essentially measure how effective a building material is at transmitting heat between the outside and the inside of the building.
Here at Lichfield Windows we understand the importance of having a good U-value for your glazing, which is why we only provide the finest brands of windows such as Rehau.
In our latest blog we are going to explain the importance of U-values for your glazing.

Explaining U-Values

The lower the U-Value, the slower the rate that heat transfers through the material in question making it a better insulator. The measurement for U-value units is square metre per Kelvin (W/m2K).
When combining all building fabric U-values together to form a collective figure for the entire building, the lower it is, the less energy is required to maintain comfortable temperatures.

How Windows are Insulators

Part L of the Building Regulations states developers should aim for a U-Value of 1.6 W/m2 K for windows installed in a retrofit scenario, or 1.4 W/m2 in a new build. For example, a white Rehau window with standard reinforcement can achieve a U-Value of 1.2 W/m2 K which makes it ideal for any setting.

Rehau windows accommodate a large array of glazing units including the most efficient triple glazed, insulated options, which achieve a U-value less than 1 W/m2K in some circumstances.
Developers and housebuilders should look to achieve the lowest possible U-Value for their windows to offset potential shortcuts or compromise elsewhere.
The insulation properties of a building’s windows are crucial, especially with commercial buildings that are responsible for a large number of the UK’s emissions – which is likely to grow as energy efficiency targets continue to rise.

Talk to Lichfield Windows – The Glazing Specialists

If you would like to know more about Lichfield Window’s range of A-rated windows, please contact us today.
We design, manufacture and install the finest windows in Sutton Coldfield and Lichfield.