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Thursday, August 6, 2009

Skylight inside the home / Natural Light






Introducing more natural light into your home from one or more skylights will make your rooms feel more spacious, expansive and more beautiful. The increase in natural light can help decrease your overall energy costs. Skylights and roof windows can provide spaces with the warmth and brightness of natural daylight in the Livng room, Drawing room, Bed room Kitchen and even in Bath room. They can enhance almost any interior and are becoming increasingly popular. However, in order to gain the maximum benefit from a skylight, it's important to understand the designs, materials and proper positioning.

The physical size of the skylight greatly affects the illumination level and temperature of the space below. As a rule of thumb, the skylight size should never be more than 5% of the floor area in rooms with many windows and no more than 15% of the room's total floor area for spaces with few windows. In very cold weather, skylights are often prone to water vapor condensing on the glazing. This may cause water to drip into the room. Better skylights usually have an interior channel to collect the condensation so it can evaporate later. To eliminate this, efficient skylights are less prone to condensation problems.
 
The material used in skylights can impact energy savings, occupant safety, and unit reliability. Consider the choice of glazing carefully. The two types commonly used are plastic and glass. Plastic glazing are usually inexpensive and less liable to break, their surfaces scratch easily and they may become brittle and discolored over time. Glass is usually found on more expensive skylights. It is much harder and durable than plastics and do not discolor. They are often made with a tempered glass on the exterior side and a laminated pane on the interior side.
 
The location is important, if you want to maximize natural lighting and passive solar heating potential. Skylights on roofs that face north proved fairly constant but cool illumination. Skylights on the east provide maximum light and solar heat gain in the morning. On the west the provide afternoon sunlight and heat gain. You can prevent unwanted solar heat gain by installing the skylight in the shade of deciduous (leaf-shedding) trees, or add a movable shading device. The slope, or tilt, of the skylight also has a great effect on solar heat gain. A low-slope will admit relatively more solar heat in the summer and less in the winter, exactly what is desirable.
 

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