Energy-Efficient Windows vs Regular Windows

There are several differences between energy-efficient and regular windows. For the most part, these differences are what make the windows energy-efficient, so they are crucial to the design. As a result, when you decide to replace your standard windows with thermally efficient versions you can expect to see these features.

While the majority of regular windows are designed simply for more light and better ventilation, energy-efficient windows aim to achieve the following goals:

• Reducing heat loss from the inside
• Preventing air leakage either inside or out
• Blocking ultraviolet rays from the sun

Here we will explore what makes energy-efficient windows different from regular windows, using the examples of aluminium, steel, uPVC, and timber window frames. Contact us for a free quote on all kinds of energy-saving windows and doors across the south coast of the UK.

Glazing in Energy-Efficient Windows vs Regular Windows

The glazing is the primary difference of an energy-efficient window. Double-glazed windows are fitted with two panes of glass, which will act as a thermal break and boost energy savings. Single-pane windows allow heat transfer from the inside, which means you may have to use more fuel.

The extra layer is beneficial, but the gap between the panes of glass is also filled with inert gas to further boost insulation. Double glazing saves money by using a combination of techniques that help reduce expense on energy bills in the glazing – it does not rely on extra glass by itself.

Any air leakage will be further mitigated by firm seals within the glass, which are usually made with silicone sealants and additional pieces of rubber to prevent thermal transfer. It is possible to add a DIY seal to regular windows too, but this strategy is noted to not be as effective.

Frames in Energy-Efficient Windows vs Regular Windows

To achieve a better level of energy efficiency the frame designs and materials are different for energy-efficient windows in comparison to regular windows. For example, uPVC frames are a common material in double glazing for cost-effectiveness and low conductivity – but rare for single glazing.

Aluminium frames are another popular type of material, which is used for its strength, looks and because it has a very light weight. As aluminium is a high conductor, it is used with other materials such as wood to reduce the likelihood of any heat transfer. Steel windows are also often used.

Regular windows are much more likely to use timber, but double-glazed timber and other wood-based energy-efficient window products are also available. Frames in regular windows are much slimmer as they do not have the same energy efficiency, which means they have a much smaller profile.

Opening & Closing Mechanisms in Energy-Efficient Windows vs Regular Windows

A regular window might have a metal latch or a sash mechanism that opens and closes the window, while energy-efficient windows have seals and padding to prevent air leakage. When you open or close an energy-efficient window you might even hear the air seal being broken.

Energy-efficient windows are generally a bit more secure than regular windows, both because of the additional glass and the extra frame materials. With bigger and more sturdy frames there is also room for larger locking mechanisms, which is important for a window at ground level.

Some energy-efficient windows will use tilt and turn mechanisms that can add the ability to be locked while still providing ventilation. It is also possible for large windows, like picture windows or windows in big commercial spaces like office buildings, to have no opening functionality at all.

Colours & Finishes in Energy-Efficient Windows vs Regular Windows

Steel, aluminium and uPVC windows come in a range of colours to match a building, which is not common in regular window frame materials such as timber that can simply be painted. Steel and aluminium window frames often use powder coating to create a wide range of colours.

Many people choose energy-efficient windows for use on an older or period property, so different colours can help to suit houses and other buildings of historical note. Many conservation areas have strict limits on what is acceptable and in-keeping with the surrounding area.

Finishes on uPVC are not sprayed on but created during manufacture by colouring the plastic. You can get imitation wood grain effects for a uPVC window, which will faithfully mimic the look of a timber window while providing all of the benefits of a more energy-efficient window design.

How Much are Energy-Efficient Windows vs Regular Windows?

Energy-efficient windows are typically more expensive than regular windows. The differences in manufacturing time, more materials, and greater intricacy of parts mean that they can cost a bit more to produce. Aluminium and steel are also quite expensive. However, energy-efficient windows will save you money on bills over time, so they are well worth the initial investment.