Storm and Flush Windows Energy Ratings
The BSI Energy Rating system is the UK’s national system for rating the energy efficiency of windows and is recognised within the Building Regulations as a method to show compliance. BSI window energy rating uses a traffic-light style A-E ratings guide similar to that used on white goods (such as fridges, freezers, washing machines etc). As well as taking U values into consideration, the BSI energy ratings also take into account the nominal solar heat gain provided by windows.
Window Energy Ratings determine how well a window will perform the functions of helping you contain and conserve heat within your building in the winter. Both A+ rated as standard, the Storm and Flush window ranges take energy efficient windows to the highest level with double glazing to 28mm thickness.
Understanding U Values
U-Values measure how well heat is transferred by the entire energy efficient windows - the frame, sash and glass - either into or out of the building. U Values are measured in W/m2K, the lower the U-Value number, the better the window or door will keep heat inside a building on a cold day.
Both the Storm and Flush window ranges have a 1.3U value and is rated WER A+ as standard. By choosing any windows from the Evolution range you can be assured they will keep your home lovely and warm in winter, cool in the summer and your bills to a minimum, knowing you are not wasting or losing energy.
It has been shown that energy efficient windows will help to minimise heating costs when installed by skilled qualified professionals. Using Evolution will ensure that your windows will be a valuable asset to your home for many years to come.
Triple Glazing - The Ultimate Energy Efficient Windows
To further enhance your homes’ energy saving credentials triple glazed energy efficient windows will ensure that your home is warmer, more secure and will add value to your property. If you live in a noisy area, near an airport, school, or busy road for example, triple glazing will also significantly reduce noise pollution.
Both our Storm and Flush window ranges have the option of upgrading to our ultimate energy rated triple glazing energy efficient windows (with the exception of windows with Georgian bars).
A standard double glazed Storm window has a U value of 1.3 but a triple glazed Storm window has a U value of 1.1. This makes triple glazed windows 15% more energy efficient than double glazed in terms of heat loss, whilst still maintaining the beautiful aesthetics which have become synonymous with the Evolution energy efficient windows collection.