--> VELUX daylight calculator – get the daylight ratio right

Your daylight calculator

To ensure rooms have adequate levels of daylight it is recommended that the glazed area of all windows is no less than 20% of the floor area of the room.

Understand how achieving the right amount of daylight could transform your extension or loft conversion with VELUX roof windows.

See the transformation

Move the toggle below to see the difference VELUX roof windows could make to your project.

The benefits

Customer feedback

maximising the natural daylight in this single storey extension, with VELUX roof windows

Lucy and Matt’s loft conversion

“The VELUX roof windows have really helped transform the space, making it look and feel so much bigger and brighter. I can’t believe what was once essentially just storage space is now a fully functioning extra floor of our house.”

The Wicke’s kitchen and dining extension

“We’re thrilled with our finished home and the extra space and light the extension brings. Getting the kids ready for school, getting ourselves ready for work and eating breakfast as a family are all routine morning tasks, but they have been made all the more enjoyable thanks to the bright new space in our home."
getting the daylight ratio right in this beautiful loft conversion
Find the right VELUX roof windows to achieve the right the amount of daylight in your extension or loft conversion

 

It's quick and easy

Find the right VELUX roof windows to achieve the right the amount of daylight in your extension or loft conversion.