All of our Casement Windows are individually made-to-measure with your choice of style, colour and glass. Start your quote today and create your perfect casement windows with Extra.

Casement windows are the most popular style of windows in the UK and it’s not hard to see why. They are all tailor made to your exact requirements, they are warmer, quieter, and incredibly secure and they come in a variety of colours to match the style of your home perfectly.

There are literally hundreds of different casement window designs to choose from and with many beautiful styles of glass finishes to complement this type of window. We guarantee there will be a style and finish to suite your home.  Speaking of guarantees, the Extra Windows casement window has an amazing 15 year guarantee and a unique security guarantee to give you complete peace of mind.

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Why Casement Windows?


The security of your home is incredibly important. Our casement windows are fitted with Ultion Locks for incredible home security. We are so confident of the security of these casement windows, if our locks fail during a burgalry, we will replace the locks free of charge.  If a burglar manages to then access your home, Ultion will give you £1000 for the inconvenience.

Energy Efficiency

Our beautiful range of casement windows achieve extremely high levels of energy efficiency.  With the option of double glazed glass or even triple glazing to give the best possible energy efficiency for your home, saving you money on your heating bills and helping to keep your home at the ideal temperature all year round.

Sound Reduction

Keeping your home nice and quiet and away from outside noise is very important for a number of home owners around the UK. Whether it is noisy traffic, noisy neighbours or even a flight path, keeping this outside noise down to a minimum can be achieved with our A Rated windows.