Roof windows Add daylight, fresh air and a feeling of more space to your home with VELUX roof windows for sloping roofs. Explore our products below. 2in1 roof window Double your daylight. One fixed and one window that can open. Single roof windows Let daylight and fresh air into small rooms. 3in1 roof window Increase the feeling of space. One fixed and two windows that can open. Multiple windows Your own combination of windows to make your space truly unique. Roof balcony and terrace Transform your home and welcome in the outdoors.