Paperless Gypsum Board
By Jeremy Bloom on Wednesday, March 5th, 2008
DensArmor Plus®, interior paperless drywall. Manufactured by Georgia Pacific.
Who wants to breathe mold?
There’s been a growing awareness of indoor air quality, with the American College of Occupational and Environmental Medicine (ACOEM) estimating that 10 percent of Americans are directly allergic to mold.That’s about 30 million people who can potentially be sickened just by walking into a building. Mold is an even bigger concern for at-risk populations, like children (it’s estimated that mold exposure doubles a child’s chance of developing asthma), the elderly, or those already sick.
It turns out mold’s major foothold comes in wallboard, and in particular the organic paper cladding, which in damp environments can provide the perfect home for mold to thrive in. This is why the Oakland children’s hospital went with DensArmor Plus paperless drywall from Georgia Pacific.
Instead of paper, the panels feature a glass-mat surface on both the front and back, plus additional moisture-resistance features. DensArmor Plus® scored a 10, the highest level of performance for mold resistance, under ASTM D 3273 testing.
The panels are recommended for all interior uses, but are especially useful in environments that might be exposed to moisture, including bathrooms, kitchens, and basements, in both residential and commercial settings. And moisture can be a problem anywhere: Georgia Pacific points out that “In today’s tightly sealed structures, inner wall cavities present ideal growth opportunities for mold, simply because of the moisture concentration, the lack of air circulation and the temperature differential from one side of the wall to the other. Thus, mold’s greatest potential for growth is out of sight.”
There are a couple of additional benefits. Because of its low emission of volatile organic compounds (VOCs), DensArmor Plus® is the first, and so far the only, gypsum drywall to be GREENGUARD Indoor Air Quality Certified®. It also received GREENGUARD Children & Schools Certification, for a product that can help reduce exposure of schoolchildren to indoor air pollutants, which means use of DensArmor Plus® gives LEED certification points two separate ways in school construction.
Installation photo from Medical University of South Carolina, Charleston, South Carolina. Designed by NBBJ and LS3P. Built by BGKS.
Another benefit: it’s so moisture-resistant that Georgia Pacific offers a 90-day in-place warranty against exposure damage, meaning wallboard can start going up even before the building is completely closed in. Imagine how much help that can be on a tight construction schedule!
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