There is such a great variety of skylight types in the market today that you could never fail to find an ideal one for your home. The main purposes for skylight installation in our homes are for ventilation, lighting and heating. Due to their prime position on the roof, they have a huge advantage over windows in fulfilling these purposes. You could get a fixed skylight when all you want is some light; but keep in mind that this type does not close so you need to place it in a room that needs light all the time. A ventilation skylight is more appropriate if your wish is to balance heat levels in the room; in fact, you could get one with a sensor that regulates the automatic closure and opening of the skylight depending on the temperature levels you desire. The styles in which you find them also vary greatly. There are simple ones which are purely functional but some like the polygon skylight add great aesthetic value to your home. Installing skylight on your roof will serve to enhance the look of your rooms making them seem more spacious and attractive. But remember that if badly installed it will definitely cause you problems.