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<DIV><FONT face=Verdana><EM>"... homeowners can retrofit the attic with the new
design for about $2,000..."</EM></FONT></DIV>
<DIV><FONT face=Verdana><EM></EM></FONT> </DIV>
<DIV>I'm hard pressed to see how the installation depicted in the article
drawing costs anywhere near as low as $2,000. I must be missing something
here.</DIV>
<DIV> </DIV>
<DIV>Ron </DIV>
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style="BORDER-LEFT: #000000 2px solid; PADDING-LEFT: 5px; PADDING-RIGHT: 0px; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="FONT: 10pt arial; BACKGROUND: #e4e4e4; font-color: black"><B>From:</B>
<A title=jason@amicusgreen.com href="mailto:jason@amicusgreen.com">Jason
Holstine</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A
title=Greenbuilding@lists.bioenergylists.org
href="mailto:Greenbuilding@lists.bioenergylists.org">Greenbuilding
Listserv</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Tuesday, September 11, 2012 5:07
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> [Greenbuilding] New ORNL
roofdeck model</DIV>
<DIV><BR></DIV><FONT face="Calibri, Verdana, Helvetica, Arial"><SPAN
style="FONT-SIZE: 11pt"><A
href="http://www.rdmag.com/News/Feeds/2012/09/energy-ornl-roof-and-attic-design-proves-efficient-in-sum/">http://www.rdmag.com/News/Feeds/2012/09/energy-ornl-roof-and-attic-design-proves-efficient-in-sum/</A><BR><BR><BR>OAK
RIDGE, Tenn., Sep. 10, 2012 — A new kind of roof-and-attic system field-tested
at the Department of Energy's Oak Ridge National Laboratory keeps homes cool
in summer and prevents heat loss in winter, a multi-seasonal efficiency
uncommon in roof and attic design. <BR><BR>The system improves efficiency
using controls for radiation, convection and insulation, including a passive
ventilation system that pulls air from the underbelly of the attic into an
inclined air space above the roof.<BR><BR>"Heat that would have gone into the
house is carried up and out," says Bill Miller of ORNL's Building Envelope
Group. "And with a passive ventilation scheme, there are no moving parts, so
it's guaranteed to work."<BR><BR>The new roof system design can be retrofitted
with almost all roofing products. The heart of the design is a foiled covered
polystyrene insulation that fits over and between rafters in new construction
or can be attached on top of an existing shingle roof system. Homeowners don't
have to remove old shingles, which saves money.<BR><BR>Poorly sealed HVAC
ducts leak conditioned air into an attic, which typically costs homeowners
$100 to $300 per year based on ORNL computer simulations.<BR><BR>To address
the problem, some homeowners pay $8,000 to seal the attic with spray foam,
which can save upwards of $460 a year. For less initial cost and the same
number of payback years, homeowners can retrofit the attic with the new design
for about $2,000 and save $100 a year.<BR><BR>Looking to the future, Miller
and colleagues are working on designs with lower initial installation costs,
and greater cost-effectiveness overall.<BR><BR>The paper, "Prototype Roof Deck
Designed to Self-Regulate Deck Temperature and Reduce Heat Transfer," was
published by the National Roofing Contractors Association. Authors on the
paper are W. Miller, Stan Atherton and Russell Graves of the University of
Tennessee, Knoxville, and Billy Ellis of Billy Ellis Roofing.<BR><BR>Funding
was provided by the DOE Office of Energy Efficiency and Renewable Energy and
Billy Ellis Roofing under a User Agreement. UT-Battelle manages ORNL for DOE's
Office of Science, the single largest supporter of basic research in the
physical sciences in the United States. The Office of Science is working to
address some of the most pressing challenges of our time. For more
information, please visit <A
href="http://science.energy.gov/">http://science.energy.gov/</A>.<BR><BR>UT-Battelle
manages ORNL for the Office of Science. The Office of Science is the single
largest supporter of basic research in the physical sciences in the United
States and is working to address some of the most pressing challenges of our
time. For more information, please visit <A
href="http://science.energy.gov/">http://science.energy.gov/</A>.<BR><BR>By
Emma Macmillan<BR></SPAN></FONT>
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