Energy Efficient Solutions

Casement windows are a classic choice for British homes, and for good reason. Hinged at the side or top, they open outwards to let in plenty of fresh air, then close tightly against the frame to seal out draughts. Our casement windows are made with Kommerling 76. Its 76mm frame contains six internal chambers that trap air and slow heat loss, giving better thermal performance than typical 70mm windows.

The result is a U-value as low as 1.2 W/m²K with double glazing, or just 0.78 W/m²K with triple glazing. Kommerling 76 casement windows also comply with the latest Building Regulations for replacement windows. Because uPVC never needs sanding, staining or painting, your new windows will keep looking their best with very little effort. An occasional wipe clean is all it takes.

Seamless Installations

Replacing your windows should be as stress free as possible. Our experienced fitters handle every stage of the job, from accurate measuring to careful installation and thorough checks once your windows are in place. It all starts with a conversation. Visit our Gloucester showroom, start a quote online or give us a call, and we will talk through the style, colour and glazing options that suit your home. Once you are happy with your design, we measure every opening precisely so each window is made to fit perfectly.

On installation day, our team arrives when agreed and works efficiently to keep disruption to a minimum. We respect your home throughout and tidy up before we leave. Before we finish, we check that every window opens, closes and locks smoothly, and we show you how everything works. If you have any questions afterwards, our friendly team is always just a phone call away.

Customisation Options

Have a look at some of our colour options to customise your casement windows. From classic white and modern greys to realistic woodgrains, there is a finish to suit every home, and you can visit our Gloucester showroom to see samples in person.

Agate Grey

Anthracite Grey Smooth Matt

Anthracite Grey Smooth

Anthracite Grey

Black Ash

Bronze Metallic

Fir Green

Ginger Oak Matt

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FAQs

Take a look at some of our commonly asked questions about our uPVC casement windows. If you cannot find the answer you are looking for, our friendly team is always happy to help.

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What makes uPVC casement windows a good choice for homes in Gloucester?

They are highly energy efficient, helping to keep your home warm in winter and comfortable in summer. Robust frames and multipoint locking also improve security, making them a great choice for homeowners who want comfort, safety and lower energy bills.

Casement windows also suit almost any property, from period cottages to modern new builds. Because each window is made to measure, we can match the size, layout and opening configuration of your existing windows, or change them to let in more light and fresh air.

What styles can I customise my uPVC casement windows in?
Can uPVC casement windows handle tough weather conditions?
Can installing uPVC casement windows reduce my energy bills?
How secure are uPVC casement windows?
Why choose Thomas Tonks to install my casement windows?

Our Products

Explore our full range of home improvement products, from windows and doors to conservatories. Every product is chosen for its quality, performance and style, and expertly installed by our experienced team across Gloucester and Gloucestershire.

Contact Us

Once you are ready to install your casement windows, fill out our online contact form and we will help you. You can also design your windows and get a price with our online quoting tool, or give our friendly team a call to discuss your project.

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