Measuring The U-Value Of Your Conservatory Windows

If you’re wondering how to save on your energy bills, then take a look at your conservatory and make sure you’re not throwing money out of the window.

Large glass windows and doors offer a way to introduce plenty of natural light into your home, while creating a natural flow between your interior and exterior living environments. But how energy efficient are the windows in your home?

Examining The Make-Up Of Your Windows

Conservatory windows are made up of glass or glazing, and there are a variety of ways in which they can leak air. Depending on the installation of the glass, caulking any cracks in the frame, or the joints should assist with keeping the air locked inside your home and preventing the cold air from outside seeping in. However, the actual material of the glass or glazing should also be put under the microscope.

What’s Your U-Value?

The U-Value of a particular building component, which might include a wall, roof, window or door refers to how well it transmits heat from the inside to the outside. Specifically, it measures the energy, or heat loss through a square metre of that material for every degree difference in temperature between the interior and exterior. In plain English, what homeowners are looking for in an energy-efficient home with an ambient temperature, are windows with a low U-value.

Let’s compare the U-value of a traditional piece of glass with some triple glazing. The typical glass window U-value is 6.0K/m2K, meaning that for every degree of temperature difference between outside and within your home, your windows are losing 6 watts per square metre. In comparison, the U-value for a Solarlux glass extension can be as low as 1.51K/m2K, representing a huge difference in efficiency. Imagine the difference to your energy bills if you switched to an eco-friendlier alternative.

Selecting A Different Window Type

There are a number of types of glazing that you could opt for. Heat-absorbing glazing contains a special tint that alters the colour of the glass. This then absorbs a larger fraction of incoming radiation which reduces the solar heat gain coefficient (SHGC) and takes away some of the glare.  The heat that does pass through the glazing can be reduced somewhat by an inner layer of clear glass or a coating that is applied to the insulation.

Insulated glass is another way to obtain a low U-value for your windows or conservatory extension. Insulated windows typically use two layers of glass which are spaced apart and then sealed. The air that is trapped in the space between the two is warming and lowers both the SHGC and the U-Value.

Spectrally selective coatings on the glass or glazing filter out between 40-70% of the heat that usually travels between the window, but still allow the same level of light to pass through. The clever design allows some optical wavelengths to be reflected, while others remain completely transparent.

Whether you’re putting in a brand-new conservatory, or are looking to upgrade your existing extension, you can save money on your future energy bills by investing in smart glazing technology. Get a free no-obligation quote today!