Skylights bring in the natural sun light into the room. This makes the room appear larger, and reveal its true colors. Apart from these benefits, it also minimizes eyestrain, increases the productivity, and reduces electricity consumption. The skylights come in various sizes and shapes that can be easily integrated into your ceiling and roofing construction. An increased use of natural light can help decrease your overall energy costs. For the best functionality, skylights should and must be placed where the sun can shine on them directly. A skylight would not be very effective in area or a house that is shaded by adjacent structures or foliage. Similarly, they are not useful in areas that have heavy cloud cover for a large period of time. There are many companies that manufacture skylights. However, the most common materials used to manufacture them are glass, glass composites, plastics and plastic composites. All of these materials can be treated to minimize light transmission and cooling load. The advantages of glass skylight include durability, high light transmission, hardness and rigidity. The main shortcoming of glass is its vulnerability to breakage. It also raises doubts about safety hazard that falling glass creates. Contrary, plastic materials are lighter in weight, and they are resistant to shattering, posing only a minimal safety hazard.