A clerestory is a window or collection of windows positioned high in a wall near the eaves or on a roof that admits daylight into the interior of a structure and can be utilized for ventilation, light, and solar heat gain. The windows are usually movable and should face south or north. They may be fixed glass panels or operable lights. A clerestory provides useful lighting during periods of electrical power failure and it permits the escape of heated air during hot months. The word comes from Latin clera, meaning "white," and sterea, meaning "three." Thus, a clerestory consists of three windows.
The traditional arrangement in Europe was to have one large central window and two smaller side windows, but this was not always the case. In buildings with stone exteriors, clerestories were often filled with flat stones instead of glass. This did not hinder the flow of air through the building since each stone only covers a small area of glass. However, in buildings with brick or wood exteriors, the use of stone clerestories was common because glass could be used instead. Oil lamps provided illumination for work surfaces and documents during the early days of electricity. The oil would drain down inside the casing and be replaced when needed. As technology improved, electric lights were installed in place of oil lamps.
In modern buildings, clerestories are most commonly found in commercial structures and airports.
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11th of July, 2019 A clerestory window is a big window or sequence of tiny windows that run along the top of a structure's wall, generally towards the roof line. Clerestory windows are a sort of "fenestration," or glass window layout, that can be seen in both residential and commercial buildings.
Clerestory windows are perfect for giving natural light and warmth in places where natural light and solar heat would otherwise be inaccessible. Clerestories assist to level out interior temperatures and provide abundant, natural daylighting to north-facing or inner spaces that is generally only available in south-facing rooms. They can also be used to bring in much-needed sunlight during inclement weather.
The words "clerestory" and "cathedral" come from the same Latin word for "skylight." In Christian churches with high naves, clerestories were often built over the crossing, where they could see worshipers and clergy alike. Today, they are found in domestic buildings as well, especially where there is not enough space for full-size windows.
In medieval churches, clerestories were usually set into the wall of the nave instead of being mounted on wooden frames. This was because there were no glass manufacturers in Europe at the time, so there were very few glazed windows then. Instead, lights were let into the wall from above, using holes called "sight slots" which were either made by hand or drilled by a machine called an "eye-drill." The sight slots allowed the mason to check his work while still inside the wall panel and also helped to distribute weight more evenly across the building.
Clerestory windows, like roof windows or skylights, can cause substantially greater overheating and heat loss than standard windows. Clerestory windows might be a disadvantage. Even with the greatest glazing, they can be a source of energy waste and cause unwanted glare and overheating. They require more energy to operate and are not as efficient as intended.
The main disadvantage of clerestory windows is their impact on room temperature. They tend to transfer heat into the building rapidly, which could cause interior spaces to feel hot or cold depending on how they are used. Although glass blocks out solar radiation, it allows heat to pass through it and enter the building. This can lead to heated rooms in the summer and cold rooms in the winter.
Clerestory windows are also very expensive. Not only do they usually require special construction techniques that increase the cost of buildings, but they also consume much energy. Modern versions may use fluorescent tubes instead of natural light to reduce costs and energy consumption even further.
Finally, clerestory windows make buildings look old-fashioned. Because they are so unusual, they suggest that you are building some kind of historic structure, which many modern buildings don't need or want.
In conclusion, clerestory windows are very inefficient because they allow heat to pass through them.
They are usually set in situ and do not open to allow for ventilation. The cost of a standard clerestory window ranges from $1,400 to $2,500. Typical clerestory windows consist of three or more medium-sized windows. They provide light but no view and are used for storage or display purposes.
The word "clerestory" comes from Greek kleos (light) and stereon (a building). In Christian churches, the term refers to the gallery above the nave where observers could look down upon the priest and congregation below. The word is also used for similar galleries in other buildings such as theaters and museums.
In medieval churches, the word "clerestory" was also used to describe the roofline above the choir, where there might be only one small window or none at all. Today, this area is usually referred to as the gable.
As for modern buildings that have a clerestory roof, these are usually found in commercial buildings and factories where they provide light but no view and are used for storage or display purposes.
A clerestory window allows the north sun to shine into a south-facing dwelling. It is desirable for such windows to open toward the southwest or southeast.
Windows that do not open but have glass let in light and air, but also let in noise and pollution from the outside world. They are not recommended for homes where privacy is important or where security concerns make them inappropriate. Windows that open toward the inside of the house keep out heat in the winter and cold air in the summer, but they can't be used as an escape route in case of fire. They are recommended for most other types of buildings including churches, museums, and libraries.
Window designs vary, but generally they fall into one of three categories: casement, hopper, and bow. Casement windows roll up onto a track or hinge. They are easy to close and lock from the outside, but this design requires space behind the window for it to close properly which may not be available in some places like apartments. Hopper windows slide in opposite directions, allowing them to be opened both upward and downward. They are easy to clean because you can reach all parts of the window from the exterior, but this type of window does not provide much ventilation.