July 2008
by Ted Cushman
Elevated floors on pier foundations are mandated in V zones and recommended in coastal A zones. But the moisture and energy details can be a head-scratcher. Whether a builder places the floor system on pier supports or on a perimeter stemwall, he has to face interrelated problems of air sealing, insulation, and moisture protection that are neither easy nor cheap to solve. Ted Cushman looks at the issues and latest research and recommendations.
First 100 Words:
Raised Floors for the Low Country Elevated floors on pier foundations are mandated in V zones and recommended in coastal A zones. But the moisture and energy details can be a head-scratcher. by Ted Cushman Charlie Carll, Research Forest Products Technologist at the U.S. Forest Products Laboratory, attaches temperature and humidity sensors to the underside of a floor system at Musicians' Village in the Lower 9th Ward of New Orleans. Researchers have begun a year-long effort at the community to document the performance of various insulation and air-sealing methods in raised floor construction. According to the latest U.S. Census, more
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