Roof window configurator
Reimagine your extension with daylight
Imagine a living space that’s bathed in natural light and designed for connection.
Whether you’re expanding to create space for your family or to bring your vision to life, your perfect extension starts here! Where life’s best moments happen.
Why VELUX roof windows are essential for your dream extension
VELUX roof windows add TWICE the daylight to a sloping roof extension than bifold doors, as they allow light to reach deeper into your home
VELUX flat roof windows can add THREE times the daylight to a flat roof extension, making them just as critical a consideration
By adding roof windows to your vertical glazing, you can improve ventilation in your home by up to FOUR times
Get the right amount of daylight in your space
Combining VELUX roof windows with vertical glazing is essential as it allows daylight to enter a space from all different angles. By following the daylight rule, you can bring daylight deeper into your home, making your space feel larger and lighter. For optimal comfort, the glazed areas should represent at least 15-20% of the room’s overall floor space.
Don’t lose out on daylight - follow the daylight rule.
Bright Spaces Start Here: Explore Extension Ideas
Don't just take our word for it.
Explore ideas, advice, and tips from architects, builders, and homeowners who know the extension process inside out.
Don’t forget.
When extending your home you move the source of light further away from your internal space.
Complementing bifold doors with roof windows adds at least twice the daylight.
Experience for yourself how daylight can transform rooms.
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Frequently asked questions about home extensions
Planning a home extension often raises many questions, from planning permission to roof window costs and installation. Here you will find answers to some of the most common questions homeowners ask when designing an extension and introducing more natural daylight into their space.
Do I need planning permission to fit a VELUX window in my roof?
Do I need planning permission to fit a VELUX window in my roof?
In many cases, roof windows can be installed under Permitted Development rights, meaning planning permission is not required. However, the installation must meet certain conditions related to roof height, placement and appearance. Additional restrictions may apply if your property is listed or located in a Conservation Area. It is always advisable to check with your local planning authority before starting work.
How much does a roof window cost?
How much does a roof window cost?
The cost of a roof window depends on the size, glazing type and whether you choose a manual, electric or solar-powered model. Installation costs will also vary depending on the complexity of the roof and interior finishing work. As a guide, homeowners should consider both the product and installation costs when budgeting for roof windows in an extension project.
What are the sizes of VELUX roof windows?
What are the sizes of VELUX roof windows?
VELUX roof windows are available in a wide range of standard sizes to suit different roof types and room layouts. Sizes typically vary based on the width between roof rafters and the amount of daylight required in the space. Using a roof window configurator or speaking to a VELUX installer can help determine the most suitable size for your extension.
Can you add roof windows to an existing extension roof?
Can you add roof windows to an existing extension roof?
Yes, roof windows can often be added to an existing extension roof. This can be an effective way to introduce more natural daylight and improve ventilation in the space. A qualified installer can assess the roof structure to ensure it is suitable and advise on the best window placement for daylight and comfort.
Can you join roof windows together in an extension?
Can you join roof windows together in an extension?
Yes, multiple roof windows can be installed together to create larger daylight openings. Joining roof windows side by side or vertically is a common design approach in modern extensions. This allows more daylight to enter the room and can create a brighter, more open feeling within the space.
Best roof window extension products
Low pitch roof window
Brighten your home with a low pitch roof window, perfect for single-storey house extensions with a low pitch. It brings in twice the daylight of a vertical window, creating a brighter space.
Flat roof windows
Transform your home with VELUX flat roof windows, the perfect solution for bringing natural light and fresh air into spaces with flat or low-pitched roofs. Our innovative flat roof skylights are designed to enhance your daily life, creating brighter, healthier, and more energy-efficient environments.
Solar and electric solutions
VELUX solar and electric solutions features solar and electric roof windows, shutters, and blinds, making it simple to ventilate, control light, and shield your home from heat.
Blinds and shutters
Set the scene for daytime living and restful nights with VELUX blinds and shutters. From light dimming to complete blackout and privacy, the VELUX blinds collection features options to meet every need.