Hiring an installer who’s qualified to expertly fit windows is not to be overlooked, as they will rigorously measure your openings and use these proportions to flawlessly add new designs.
You will benefit from knowing about common UK window sizes so you’re aware of what sized windows are necessary, and it will aid with getting an accurate quotation.
UPVC Windows
A tremendously popular style, the UPVC window is the most affordable option and easily maintained. Average sizes of UPVC windows are as follows:
- Heights: 600mm, 1050mm, 1200mm, 1350mm, 1500mm
- Widths: 488mm, 630mm, 915mm, 1200mm, 1770mm

Casement Windows
Supremely versatile and a frequently chosen style, the usual sizes of casement windows are:
- 635 x 890mm
- 736 x 1194mm
- 736 x 1498mm

Tilt & Turn Windows
Their flexible opening facility streamlines upkeep, generally sized as such:
- Single: 600 x 500mm (min), 1900 x 1300mm (max)
- Double: 600 x 1200mm (min), 1700 x 2400mm (max)
- Triple: 600 x 1600mm (min), 1900 x 3000mm (max)

Window Guidance Space-By-Space
Bathroom – Bathroom windows tend to be smaller than in other rooms and often accommodate frosted or obscure glazing to retain privacy.
Living Room – The largest windows are generally found in sitting rooms for attracting maximum light into them.
Kitchen – Mostly shorter in length, kitchen windows often sit in a higher position, including above a sink.
Bedroom – There’s no consistent window size in bedrooms as they can vary from exceptionally wide openings to much smaller designs.

Materials & How They Affect Sizes
Material choice will have an influence on window sizes. There are three leading materials to be advised of:
UPVC: Ordinarily, meets standard sizes, making for a straightforward installation.
Timber: Employed in many traditional or heritage properties and usually customised.
Aluminium: Slim-framed for an increased glazed volume and to amplify views.

As useful as it is to have awareness of window sizes, keep in mind that house styles differ across the country.
James Oliver will see that new replacement windows fit into your apertures without issues as we carry out a rigorous measurement process ahead of any window installation.
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LOOKING TO REPLACE YOUR WINDOWS?
We have a fantastic range to choose from so whether it’s a modern style or traditional timber effect windows – we are confident that we will have windows to improve any home to give it the finished look with elegance.
LOOKING TO REPLACE YOUR WINDOWS?
We have a fantastic range to choose from so whether it’s a modern style or traditional timber effect windows – we are confident that we will have windows to improve any home to give it the finished look with elegance.
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