Over the next three years, builders and contractors will witness an unprecedented rise in energy-efficient construction. Energy efficiency advocates succeeded in tightening the 2009 and 2012 International Energy Conservation Code with an estimated 30 percent improvement between the 2006 and 2012 versions of the code.
With changing energy code requirements, as represented in ASHRAE 90.1 or California’s Title 24, designers, engineers and contractors are facing practical challenges trying to meet these higher standards. One approach that is prescribed is the use of continuous insulation on the outside of building framing.
When a building leaks, the design, workmanship and material of the building envelope are all suspect. The exterior walls, roofing, windows, doors, balcony decks and below-grade waterproofing are all potential culprits. Oftentimes, however, a leak cannot be attributed to just one building envelope component.
The University of Pennsylvania’s advocacy of sustainable design extends from LEED ratings targets for all new building projects to collaborative efforts between the Division of Facilities and Real Estate Services, the campus community and the City of Philadelphia.
The use of gypsum board as a thermal barrier occasionally causes some misunderstanding. This seems to occur most often when an individual confuses the code requirements for a thermal barrier with the concepts behind an R-value, and he or she attempts to use R-values to resolve a thermal-barrier situation. Unfortunately, the two concepts, while somewhat linked scientifically, are altogether different and should not be viewed as equivalent or related ideas.
A veneer plaster system is a thin coat of plaster, usually 3/32 inch, over a gypsum-based panel. The reason for specifying a veneer plaster is typically to achieve a hard, abuse-resistant monolithic surface.
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