Casement Windows

An extensive range of windows and our most popular design.

Casement windows are the most popular uPVC replacement window choice due to their versatility and ability to be fitted into any window space, they offer improved security and superior energy efficiency. These windows aren’t just pleasing on the eye, they’re practical too – minimal maintenance means their good looks will last well into the future. With hundreds of design options such as decorative glass, Georgian and Astragal Bars and Mock Horns, and many different configurations such as side or top opening, casement windows can be tailored to give your home a unique new look.

Each uPVC casement window is also made with Qlon gaskets which are the worlds number one gasket for the best weather and sound proofing. For your piece of mind and security, our units are fitted with some of the highest security technology available on the market and have a minimum of 8 locking points on any opener. Ask about our £1000 security guarantee on all of our uPVC windows.





Installed Examples


Design Features

Astragal Bars

Offers a traditional finish by planting shapedbars on top of the glass panes thus creating depth to the design and the look of individual glass units.

Georgian Bars

Allows you to tailor your window glazing to create a personal finish for your home. This is achieved by inserting a shaped bar in between the glass panes.

Sash Mock Horn

Our Mock Horn feature enhances the aesthetics of your windows by achieving the appearance of a traditional vertical slider.

Leaded Glass

A classic British design that compliments traditional and older homes, but equally brings a sense of grandeur to more modern properties.

Heritage Collection

Also available is our Heritage Range hardware. Leekes ‘Monkey Tail’ design is not only aesthetically pleasing, but fully functioning and compatible too.

This range perfectly compliments traditional homes and heritage colours.

Standard Handles

White  |  Black  |  Gold  |  Chrome

Signature Handles

White  |  Black  |  Gold  |  Chrome

Glass Options


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Add value, save energy and secure your home with Leekes

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