Abstract: A roof window having an upper edge and a lower edge is provided with a shade assembly that has a flexible shade having a pair of opposite ends, a rotatable shaft attached to one of the shade ends, and a mount rotatably supporting the shaft at the lower window edge. A motor and spring unit attached to the shaft and to the other of the shade ends can wind the shade around the shaft in an open position of the assembly and unwind the shade from the shaft and pull it up along the window until the other shade end is at the upper edge in a closed position of the assembly. A pair of guides extend generally parallel to each other between the window edges. The one shade end is displaceable along the guides and respective cables attached to the one shade end extend along the guides. The shade assembly further has a stiff bar extending along the one shade edge and rollers on ends of the bar riding in the guides and attached to the cables.