Skylight / July 8, 2018 / Baptiste Allain
It is recommended that the skylight size should never be more than five percent of the floor area in rooms with many windows and not more than fifteen percent of the rooms total floor area for spaces with very few windows. Skylights on north-facing roofs provide cool illumination while east-facing roofs provide maximum light and heat in the morning. West-facing skylights provide afternoon sunlight and heat. South-facing skylights provide more passive solar heat than any other location. Skylights are an excellent way to bring more natural light into your home. Just one skylight can dramatically transform your room by adding 30% more natural light than a window. This helps you save energy and makes your home warmer during the winter.
For example the optimum slope for a south-facing skylight in Columbus Ohio at 40º North latitude is 45º to 55º. Every skylight has a "shaft" which governs how much light is admitted into the room below. If all four sides are flared then the light is spread over a wide area. If your skylight has a shaft with perpendicular sides the light is focused straight below. If your skylights shaft is flared on only one or two sides then the light is sprayed in the flared direction. Ventilation If you wish you can have a skylight which also provides ventilation as well as light to your room. This allows you to release the hot air which collects at your ceiling.
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.