What are sources of daylighting?

Would you like to enjoy natural light or daylighting in your home? If yes, fix windows, ventilators, skylights etc. while designing building to get the benefit of daylighting. Daylighting creates productive environment for occupants and reduces 30 to 40 % of total energy costs. It depends on color of walls, ceiling and floors such as light color reflects more light than dark color.

Source of Daylight: The Sun is primary source of daylighting and the sunlight comprises following two parts.

• Direct solar light
• Sky radiation

Direct solar light is not taken into consideration during daylighting. Sky radiation is considered while designing daylighting in homes. The value of sky radiation depends on the position of the Sun defined by its altitude which changes with the change in altitude of the area throughout the year.

Daylight Factor: Daylight factor is the quality of daylight in a room. It is the ratio of outside illumination over inside illumination. The intensity of daylight in a room is subject to frequent fluctuations and harshness. It is found more or less constant when the sky is clear or overcast.

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Stained glass windows

Stained glass windows allow natural sunlight to enter the house besides providing privacy to you. Such glass windows protect artwork, carpet, woods and furniture from damage by drawing intense sunlight back from your house. They not only offer aesthetic beauty to the windows but make your house appealing also. Stained glass windows, doors and skylights boost up the décor of a home. Stained glass can be applied for various items as follow.

Applications of stained glass

• Interior/exterior doors
• Cabinets or articles of furniture
• Custom lamps, room dividers and partitions
• Beveled glass windows, skylights and sidelights
• Stained glass skylights for residential/commercial use

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Tips Regarding Bedroom Doors and Windows

The door of a bed room should be less than 3 feet wide and 6 feet 9 inches high. The door should be side hung and it should be opened on the walls, not in the middle of the bedroom.



The windows should be fixed at the height of 2 feet 9 inches from floor level, maintenance free protected from sun and rain. The window should be fitted with glass shutters or fixed glass with minimum gap so as to reduce dust.

In case noise level out side is more, provide double glazed window. In case room is situated on west side, provide sun film on glasses as well as venetian blinds to reduce heat load and glare. Mosquito proof wire gauze shutter should be provided in the windows.

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