Window Sizes

Aluminium is another window material option and although this metal comes at a higher cost than uPVC, superior durability and excellent impact-resistance can be relied upon. Given our ties to two suppliers, installation depths range from 45 - 90 mm while the minimum to maximum height dimensions for a standard single sash window are 500 - 3000 mm. For the width this lies at 500 - 2700 mm.

At windows24.com, we also offer composite clad options, such as uPVC-alu and wood-alu. This means that windows have a strong aluminium exterior while uPVC or wood show on the inside. Aluminium clad options bring together the benefits of two quality materials and are available in different constructions depths and standard sash window dimensions.

Our available window materials all bring their own unique advantages, so the final decision will come down to customers' functional requirements and design preferences and our team are available to provide advice.

We can also often work with the manufacturer to offer individual solutions if you cannot find what you require in the configurator.

The dimensions described above are examples of our minimum-maximum height and width ranges for a single sash square window. We also offer double and triple sash options, however, which increase the possible dimensions and allow for larger windows. A variety of window shapes are also available and come with their own dimension ranges.

In terms of replacing windows, customers should not just rely on the original blueprint – the current wall opening should rather be measured to check. For those looking to expand or reduce the existing opening to allow for smaller or larger windows, please first speak with a structural engineer about whether and how this is possible. In general, all our products will improve energy efficiency, break-in protection, and durability when used as replacements.

For new-builds, customers have more flexibility in terms of determining the size and end location of windows. A bay window or our large floor to ceiling models can provide beautiful views out, for example, and bring in much light, especially when facing south.

A smaller standard window, on the other hand, can be ideal for providing more privacy and creating a cosier atmopshere.

Large casement windows are excellent at making living areas appear light, spacious, and welcoming but without some extra features they can also be more vulnerable to break-ins, offer reduced privacy, and are less thermally insulating than smaller sized windows.

Our many customisable add-on options provide an ideal solution here. Triple-glazing and a thermal edge can be selected for large windows, for example. They reduce energy loss and help to maintain a comfortable interior temperature.

For increased privacy, ornamental glazing can then be chosen, which ensures a good entry of light and clear views out while restricting what onlookers can see.

For improved break-in protection, multiple locking points, smart home integrated window sensors, and laminated safety glass are similarly available. With a few extra selections, large glass surfaces can therefore become as practical and secure as they are elegant.

Particularly for uPVC and wood sash windows, a range of non-standard house window sizes and shapes are available

From porthole round models that add a maritime character to large trapezoid gable options, just head to the configurator to view them all today. Here you will also find our different secure opening mechanisms, such as a tilt, turn or combined tilt and turn system.

For both non-standard window sizes and an average window, additional glass elements are available, such as top fanlights or bottom panels.

These are important to mention when on the topic of window sizes because customers can determine how the window's height should be proportionally split between the additional panel and the main window.