Leave nothing to chance

Installer roof window installation

Installation guides

Correct installation is essential for the completion of projects. Download our installation instructions and watch the videos.
Technical product information sheets

BIM & 3D objects

Import VELUX products including roof windows and flat roof windows into your 3D model.
Image of Product sectional drawings

2D CAD drawings

Download our range of sectional drawings in the format best suited to your needs.
Image of cross section of window glass and frame

Product data sheets

Download technical data sheets including U-values, glazing features, and more.

Safety data sheets

The VELUX Groups is fully aware of the obligations according to REACH Regulation (1907/2006). Download safety data sheets for a range of VELUX maintenance kits.

Size charts

Find the available sizes for each window within our product range to make sure you get the right window for the project - whether you're installing a new window or replacing an existing one.

CE marking

Find and download CE-marking documents for your specific product. Our products are CE marked according to the Construction Product Regulation.
Digital guidelines on using the VELUX trademark
Whether you're promoting your installation services, showcasing VELUX roof windows in recent projects, or managing your own online store, make sure to use the VELUX brand correctly. Check out our simple guide.
Go to guidelines
Daylight visualizer

Daylight Visualizer

The VELUX Daylight Visualizer lets you simulate and calculate the daylight levels when using different combinations of windows.
Energy and indoor climate visualizer

Energy and Indoor Climate Visualizer

VELUX Energy and Indoor Climate Visualizer is used to evaluate the performance of single-family houses with respect to energy, ventilation, and indoor climate.
Image of sun tunnel

Sun Tunnel Lux Calculator

Find the perfect placement for the VELUX sun tunnels with our Lux Calculator tool. See how a sun tunnel can flood any space with light - no matter the pitch of the roof.
Finding the u-value

U-value Calculator

Create energy-efficient solutions for any room and make it easier to choose the right window glazing with our U-value Calculator.