Does the glazing of your skylight meet code?
Does your skylight meet met code?
Skylights are required (ASHRAE 90.1-2010) on commercial buildings. Understand that not all skylights met code, especially the inseam light panels for standing seam roof or Rib/corrugated panel for screw down roofs
Harnessing natural light in your building is positive only if done correctly. Consider the impact a strong beam of sunlight into a dark building. The foot candles of direct sun may be in the 3,000 to 5,000 range. This concentrated energy creates “hot spots”. Hot spots are problematic because they cause glare, interfere with electronic equipment and cause fading. Can you imagine your desk being under such a hot spot? You would not be able to see your computer screen, your computer would heat up, you’d heat up and the glare in your eyes would make it hard to see your surroundings.
To address the issues of hot spots, ASHRAE 90.1-2010 includes the ASTM D1003 standard. The standard requires that the glazing diffuses the light by a 30% or more. A beam of light must be diverted by more than 2.5 degrees. ASTM D100 references “haze” which is related to diffusion. The material is tested using a Hazemeter or a Spectrophotometer.
The glazing of Baylight Prismatic Skylights is made up of thousands of prisms which divert the light. When evaluating skylights, make sure you are using a product which meet ASTM 1003 standard.