Get it right. Double the daylight.

room for one

Where there is room for 1 roof window

room for two

there is often room for 2

Double the daylight in your customers next project with the new VELUX 2in1 roof window.

Two sashes, one frame. Same easy installation.



Options for every project

Double the daylight in one installation with the new VELUX 2in1 roof window. Choose between 8 symmetric and asymmetric sizes and three operations -solar-powered, manual top-hung or centre-pivot options.

Technical resources

Installation guides

Correct installation is essential for the completion of projects.

Product datasheets

Ensure you get the right specification.

BIM objects

Optimise your project with 3D modelling.


Prices and sizes

Discover more product information and prices.


More daylight

The VELUX 2in1 roof window offers uninterrupted views and slim profiles maximise the amount of daylight entering the space.

Easy to install

The VELUX 2in1 roof window features a removable sash for an even faster and easier installation.

Solar-powered variant

Consider the solar-powered 2in1 roof window for remote controlled convenience and automatic rain detection.

Heat protection

A full assortment of blinds, shutters and anti-heat blinds are available to control light and protect from exterior heat.

VELUX 2in1 roof window training

Learn about our new 2in1 roof window solution and just how straightforward it is to install multiple VELUX roof windows in one frame. This innovative new roof window design is the future of maximising daylight, quickly and simply, so don’t miss out!

Online and in-person training options available.

Double the daylight.
Double the VELUX Rewards.

Earn rewards all year round on every VELUX 2in1 roof window claimed.

Click here to start earning