Planning for Effective Daylighting


Building owners, architects, lighting designers, and engineers must work together so a project’s design can be maximized to bring in as much light without causing excessive glare or heat gain. While skylights work for a building’s top floor, most of the daylight in commercial building comes through windows.

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Making the NAFS short-form specification work


Fenestration products are becoming undeniably more complex as performance expectations diversify and tighten. The same is true of the standards guiding both designers and specifiers of these products. The focus of these standards is the American Architectural Manufacturers Association/Window and Door Manufacturers Association/Canadian Standards Association (AAMA/WDMA/CSA) 101/I.S. 2/A440, North American Fenestration Standard/Specification for Windows, Doors, and Skylights (NAFS).

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10 Key Questions about Exterior Shading

Photo © Richard Wilson. Photo courtesy Draper Inc.

Over the last decade, exterior shading has become more popular in the United States. However, many architects and building owners still have limited knowledge about these systems and why they should be considered part of the building design. This article explores 10 frequently asked questions about exterior shading, while providing insight into available systems and how they can be an important part of the building’s environmental control.

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Overlooked Considerations for Windows and Curtain Walls

Photo © BigStockPhoto/Zhiwei Zhang

The primary factors most designers consider when selecting window and curtain wall systems for their projects tend to involve cost, appearance, and energy efficiency. However, other considerations—such as weatherproofing, performance, and durability—can also be critical. Understanding material options, along with aspects like performance data and perimeter detailing are crucial.

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