VELUX extensions

Discover how daylight can transform your single storey extension

Extensions inspiration at your fingertips

Pitched or flat roof extension? Download one of our eBooks for advice on the perfect daylight solution for your project.

Whether you are at the beginning of your extension journey, or have your initial plans in place, our Extensions eBook is full of inspiration and practical tips to help you create your dream space.

Download eBook

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See the difference

Extensions inspiration at your fingertips

Pitched or flat roof extension? Download one of our eBooks for advice on the perfect daylight solution for your project.

Download eBook

VIDEO: The benefits of VELUX roof windows

Navigate to the VELUX Daylight calculator tool

Discover your ideal daylight ratio

Ensure your new extension or renovation achieves the recommended glazing-to-floor daylight ratio. Simply enter your room dimensions to generate roof window size and quantity recommendations.

Try the daylight calculator

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Product packages by room

Make your own choice and find the right product package for sloped roofs that fits you best in three easy steps.

Go to products by room

Make the most of your extension

See the difference daylight can make to your extension with our new virtual reality tool

Discover more

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VELUX extensions case studies

See first hand what VELUX windows can do for a home just like yours. Check out our case studies for inspiration and ideas for your project.

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VELUX extensions picture gallery

Take a look at our gallery to see the difference our roof windows have already made to some spectacular extensions.

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The earlier you plan, the better

From timelines to budget estimates, we have all the information you need to kick start your project.

Get started

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Get free project advice

Want free advice on your project? Talk to our daylight experts today

Buying your roof windows

Find details of your local VELUX stockist or where you can buy your VELUX roof windows online

Where to buy

Find an installer

A VELUX Certified Installer can help steer your project from start to finish. Find one in your area

Find your installer

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Brochures

For more inspiration, product details and prices, check out our range of brochures

Our brochures