| U-Values How Design Choice Affects Thermal Efficiency |
Be Energy Wise with Broxwood Timber Windows & DoorsFor windows, the U-value specified is based on a standard window (1230mm x 1480mm = 1.82m²) which has been tested under industry-agreed testing conditions. The certified U-value figure makes it easier for us to compare similar products, like for like. It is widely accepted that timber windows and timber doors offer the best energy and sustainability ratings, however, as with all window types, the given U-value will change depending on the size of window you wish to order. Generally speaking, the smaller the window, the less energy efficient it is. As the size of the window increases so the u-value decreases in proportion to the increasing surface area and the relative increasing energy efficiency. It is worth noting that the more ‘break points’ you include in your choice of window design the less energy efficient it becomes. So if you include astragals or vents in your window options for example, you are likely to reduce overall energy-saving properties. Ask Broxwood for independent technical advice. To get an idea of what impact U-values can have on your home energy costs take a look at Broxwood’s Energy Saving Calculator. It’s fun, easy to use and helps to put U-value savings into a clearer perspective!
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