uPVC Casement Windows

A casement window is the name given to the typical style of window associated with residential properties. These windows can be hinged at the top, the side or fixed, At External Doors Online we supply market leading uPVC Casement window systems. Our high performing systems are capable of achieving A++ rated windows, with the ability to offer u-values as low as 0.8, helping to keep your home warm and reduce your energy bills. Manufactured in either chamfered or ovolo profile, these windows match perfectly with our uPVC French doors. At External Doors Online we offer some of the UKs most competitive prices starting from £45 inc VAT and free delivery. With standard lead times of 5-10 working days our PVC windows are the perfect choice for any project. Use our window designer to create your own unique design, obtain an instant live price and order online in seconds.

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Why choose uPVC Casement Windows?

U-Values as low as 0.8

A+ & A++ Thermal Ratings

Huge Range of Colours

PAS24 Security Compliant

Side Hung, Top Hung or Fixed

Delivery as Quick as 5-10 Working Days

Prices From ▷ £45.00 inc VAT & free delivery

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uPVC Casement Windows FAQs

Yes. Our windows are some of the highest preforming PVC windows on the market. With standard double glazing our windows achieve a U-Value of 1.2 and an energy rating of A+. An upgrade to triple glazing sees these windows achieve an energy rating of A++ and an exceptional U-Value of 0.8.
All of our windows are made bespoke to your specific requirement. Use our online 3D designer to get an instant price for your bespoke design, and order online today!
Fixed Pane Max Sizes
Width - 2100mm
Height - 2100mm
**Please note that dimensions cannot exceed 1400mm in both directions
Side Hung Max Sizes
Width - 850mm
Height - 1475mm
Top Hung Max Sizes
Width - 1200mm
Height - 1475mm
Our PVC windows are available in as little as 5 working days in the standard white. Other colours may vary in lead time.
Delivery is free of charge to most areas! Please see our lead time and delivery information page for more information.

uPVC Casement Windows Explained

From parts, options and components, to measuring and installation guides, click through the tabs below to learn everything you need to know about uPVC Casement Windows before placing your order.

Beautiful Aesthetics

A high quality window system is a must for any project. Available in a vast range of modern and traditional colours and with the option of several different features such as Georgian bars, mock sash horns, astragal bars and much more, you can create a truly unique window for your home.

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Leading Energy Efficiency

In a world with ever rising energy costs, it’s important to choose a system that will keep the warm in and the cold out. At External Doors Online we are proud to present the UKs market leading PVC Window systems, that can achieve u-values as low as 0.8 and a thermal A++ rating.

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Protect Your Home

Your windows play a crucial role in securing your home against unwanted intruders. In addition to being secure, they need to be robust and durable enough to withstand the wear and tear of everyday use – as well as everything the British weather can throw at them, which is why our window systems are tested to BS 6375-1 covering air permeability, water tightness and wind resistance

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Endless Colour Choices

At External Doors Online, we offer a vast range PVC window colour combinations from stock. From traditional rosewoods and oaks, to contemporary anthracite and slate greys, you can choose to perfect finish to complement your home.

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uPVC Casement Window Measuring Guide

These guidelines are to help you measure for a new window and make an accurate measurement.

Measure the opening outside on both the height and width. Always measure the exact brickwork opening and not the old window frame.

Measure brick to brick in at least three different places and deduct 10mm from both the final height and width measurements to allow for 5mm fitting allowance around the new window frame. This will enable you to ensure the new frame sits plumb and square once in the aperture. Spacers and filler will then be required to secure the frame into place and fill any gaps.

Eurocell Logik PVC Casement Windows measure

Please remember:

Do not measure your existing frame but measure the brick opening.
Measure in at least three different places and deduct 10mm from both the final height and width measurements - we do not make any fitting allowances on the sizes you provide.
Measurements will need to include the frame, cill and any frame extenders/add on’s required.
All dimensions to be supplied in metric and all styles viewed externally.

Transom Drop

The transom drop is measured from the top of the outer frame and down to the centre of the horizontal bar.

Mullion Width

The mullion is measured from the outer edge of frame to the centre of the vertical bar