October 16, 2007 | Vol 2, Num 42
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Last week's poll results: 
Who is the most demanding customer?

37.11%: Architect

30.93%: Homeowner

15.46%: General contractor

11.34%: Your spouse

5.15%: Building owner


News to know

New retainage reform laws protect subcontractors
So far this year, four states have passed retainage limitation policies that will help subcontractors receive full payment on projects. Officials from the American Subcontractors Association in Alexandria, Va., say the push for reform could lead to legislation in more states... read more

Solar Decathlon competitors look to glass industry for performance products

 
glassblog joins in the Environmental Blog Action Day.  

Twenty teams led by college and university students designed, engineered and built structures that balance energy efficiency and aesthetics. The homes, on display at the National Mall in Washington, D.C., Oct. 12-20, maximize solar power by taking advantage of glass products that provide ample natural light while reducing heat gain ... read more

More top stories

... read more


Product spotlight

Rain-screen panel system
Atlanta-based Southern Aluminum Finishing Co. developed the SAF Series 4000, a dry joint, rain-screen wall panel system. It helps prevent moisture problems by equalizing pressure between interior and exterior environments by channeling air and water... read more

Financials

Business headlines

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Project news:

Glass wall saves energy on solar house
“We wanted to manipulate the amount of sunlight coming through the glass wall. So, we designed a 4-foot canopy that blocks the sun when it’s at a higher angle during the summer, but allows the sun to hit the glass when it’s at a lower angle during the winter, heating up the inside.” —Matthew Mathosian, NYIT architecture student and Open House architecture team leader.

The basics: A student team from the New York Institute of Technology specified an operable, 40-foot glass wall on the south-facing side of their energy-efficient house that they designed and built for the Department of Energy’s Solar Decathlon competition, Oct. 12-20 on the National Mall in Washington, D.C. The glass wall, in addition to clerestory windows on the north side of the home, provides passive energy savings by cutting down on lighting and heating of the interior, and providing natural ventilation. An array of solar modules on the roof, as well as thin-film solar modules on the canopy over the south wall, completely powers the home.
The players:
 Design and construction, a team of about 75 undergraduate and graduate students from NYIT in Long Island, New York; glass and system supplier, NanaWall, Mill Valley, Calif.; window supplier, Andersen Windows, Bayport, Minn.; solar module supplier, SunPower Corp., San Jose, Calif.; BIPV supplier, EPV Solar, Robbinsville, N.J

The glass and systems:
 
WD66 NanaWall system of five openings with three panels in each using insulating glass units with krypton fill and low-emissivity glass with a Heat Mirror film on tempered glass.



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Photos by NYIT, Long Island (top two) and Lorin Hancock, McLean, Va.

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