Skylight / July 16, 2018 / Baptiste Allain
Obviously skylights provide added day lighting and they may even offer ventilation. However heat gain and loss is also a consideration you should make. Many modern skylights feature sun tracking lenses or mirrored surfaces that provide light without heat loss or gain. Moreover whether a fixed skylight or similar alternative is better than a ventilated skylight is a question youll want to answer. Remember ventilating can help with temperature control but it is also important for preventing the buildup of moisture. Take some time to speak to your skylight or roofing professional so that you can be sure to choose the right skylight.
For one thing skylights are positioned in such a way that they are inaccessible unless they are operated by remote. Even in cases of motorized skylights which are easily manipulated there are still some disadvantages that are inherent to skylights that are not present or minimized in windows. Vertical windows lose less heat by convection when compared to skylights. Also since windows are generally protected by overhangs or shrubs they lose less heat by radiation. On the other hand skylights are directly exposed to the sky. Thus they lose more heat by radiation. Proper insulation can reduce this heat loss to a large extent. In the summer season skylights are more exposed to the direct heat of the sun than windows.
For instance flat roofs are more susceptible to drainage problems. Flat skylights on flat roofs may lead to water pooling. That is why experts recommend the use of domed skylights on flat roofs. This promotes drainage. Skylights for low pitch installation generally have significant slope built into the design. Attention must be paid to such things before installing skylights. Skylights are introduced into the design and architecture of the home to bring in lots of light heat and warmth. But what happens if there is a tall tree towering over the skylight on the roof? The very purpose of the skylight is defeated. The position of the skylight on the roof plays a vital role in determining its usefulness and effectiveness.