Feature from Environmental Building News
September 1, 1999

Daylighting:
Energy and Productivity Benefits

In November of last year, we moved into our newly renovated third-floor office in downtown Brattleboro. On the top floor of an unusual, slate-shingle-sided building constructed in the mid-1800s by the Estey Organ Company, the EBN offices are wonderfully illuminated with natural light. Built before electric lighting existed, the building is long and narrow with tall windows. At one end of our floor is the original drafting room of the company, where perimeter windows are augmented by a roof monitor, bringing in lots of additional daylight and giving the space an almost outdoors feel. It was the natural daylighting that first attracted us to this space, and—though it necessitates some special measures in regulating the visual and thermal comfort of our offices—that daylighting is appreciated each and every day.

This article takes a look at the advantages of daylighting, including energy savings potential and new research showing productivity benefits. Daylighting is most applicable to non-residential buildings—offices, schools, manufacturing plants, and other spaces with largely daytime occupancy—though some information should prove relevant to houses as well. The accompanying checklist offers strategies for enhancing daylighting with conventional windows and skylights. In our next issue we’ll look at more high-tech options for daylight collection and distribution.


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