The attic windows were still invented back in 1947. The windows are such a design of cunning in that they are mounted on the roof of the building, which is located at an angle from 45 to 70 degrees relative to the floor.
The attic windows have a number of advantages, starting from the fact that they retain all heat and pass 40-50 percent more than light, and the difference from ordinary facade windows. Like all windows, the attic windows also have disadvantages. Due to the maximum effect of the atmosphere on the windows, you need to pay great attention to the isolation and tightness of the joints between the roof and the window. With such apparent simplicity, the attic windows are actually a high -tech product. Since it is severely exposed to atmospheric effects. Unlike an ordinary window, the attic window experiences significant loads from snow, ice and even simple water flows from the rain. And in such conditions, the window is simply obliged to maintain its thermophysical properties, as well as have tightness and resistance to high loads. There are no less or more important components in the entire design of the attic window. All window components are important, starting from the frame and ending with fittings. If under some circumstances on a regular facade window you can save, then in this case, saving is not acceptable. Two types are made attic windows, these are inclined, which are mounted directly in the plane of the roof itself, and vertical, which are installed on the slopes of the roof, namely in protruding boxes. Practice shows that the windows of the vertical location are not very practical and not convenient in that they create darkening of the room. But inclined windows are better in harmony with daylight and pass it into the rooms. Nevertheless, if you correctly approach the design of windows in an attic, you can mount both vertical and inclined windows simultaneously. Windows of this type can open both on top and below, depends on how the roof of the attic is located and how conveniently to ventilate the room.