This spring, Seattle-area couple Eric Thomas and Alexandra Salmon began construction on what will be the first zero energy home in Seattle’s Ballard neighborhood.  What is more impressive is their goal of building such an efficient home for the same price (including land) that it would cost to purchase a comparably-sized home in the area.

The home was designed to use net zero energy over the course of a year by SIPA member Zero Energy Plans, LLC of Coupeville, Washington.  Designer Ted Clifton specified SIPs from Premier SIPs and triple-pane, high performance windows to limit heating loss through the building envelope.  A passive solar design combined with stained concrete floors help the home stay warm during the cold months and reduce demand on the air-to-water heat pump that powers the home’s in-floor radiant heating system.

The homeowners also chose to incorporate several green features into the home, including reclaimed cast-iron bathtubs, no-VOC paint, and a rain garden that handles all storm water onsite.  Renewable energy is provided by a 6 kW photovoltaic array that will power the home’s all-electric heating, appliances and other needs.

You can follow the construction on the Zero-Energy House Seattle blog that includes some great SIP installation pictures and video of construction crews setting roof and wall panels.  The home has also been featured on local Fox affiliate Q13 Fox News and in the Ballard News-Tribune.

 

In effort to analyze the best methods for reducing greenhouse gas emissions and waste in home construction, the Oregon Department of Environmental Quality conducted an extensive life cycle assessment of residential construction techniques. Their recently released report examines 25 construction techniques that contribute to decreased environmental impact. Of the framing systems examined, SIPs ranked among the top methods for reducing climate change.

The life cycle assessment tracks the impact of homes from the harvesting of materials through construction, remodeling, and even demolition. Impact was measured in energy use and greenhouse gas emissions, but also in human health impact and effects on ecosystems. Even with consideration given to the energy used in harvesting and fabricating materials and construction, home occupancy was responsible for the 80 percent the total climate change impact.  This gave SIPs an advantage over other building practices due to heating and cooling efficiency gains, similar to the results of the recently published life cycle analysis conducted by the EPS Molders Association.

To learn more, visit the Oregon DEQ green building page.

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Ground Zero For The Green Housing Movement

http://www.cbsnews.com/stories/2009/05/04/eveningnews/main4990918.shtml

(CBS) Just about everywhere you look in Greensburg, Kan., somebody is building something or something’s just been built. It’s been nonstop for two years, ever since a mile-and-a-half wide tornado with 205 mph winds basically wiped this town of 1,500 people off the map, reports CBS News correspondent Jeff Glor.

Back in May 2007, Jill Eller was hopelessly sifting through the ruins of her house – and her life.

“How do you start?” she asked, crying.

Like many in Greensburg, her family lived in a trailer for two years, willing themselves to stay.

“We felt like we were abandoning ship if we left Greensburg,” Eller said.

Last month, Jill and her husband Scott moved into their one-of-a-kind three-bedroom green dream house, which is energy efficient and more tornado resistant.

“It’ gets called a lot, the igloo house, the Princess Leia house,” Jill Eller said.

“And those are the nice things,” Scott Eller said.

With Structural Insulated Panels (SIPs) – six inches of Styrofoam sandwiched between plywood panels – their gas bill went from $200 a month to only $30. But, their mortgage went from nearly paid off to $200,000.

“We’re in the worst financial position we’ve been in since we first got married,” Jill Eller said. “But we’re working it out.”

Like the Ellers, it would have been easier for most people to leave. But about 800 refused, no matter how it looked, and no matter how much it cost.

Now, Greensburg is ground zero for the green movement. The area got nearly $100 million from the government to rebuild, including a $50 million school, $25 million hospital and a $3 million city hall – all of them certified LEED Platinum, the most energy efficient you can get – but not inexpensive.

Greensburg has gone from a town that was celebrating its survival on the first anniversary of the storm, to asking serious questions about its future on the second.

“We expect to be bigger, stronger and greener,” said City Manager Steve Hewitt.

The question is: What happens when all the aid money dries up? Can going green produce green?

To survive, Hewitt is tirelessly working to capitalize on his town’s name by luring green businesses – places that build products for wind, solar and other clean energy companies, which would mean critically needed jobs that have so far not materialized.

 

Energy-Efficient Home Sneaks on Market

http://www.kxan.com/dpp/news/local/Energy_efficient_home_sneaks_on_market

AUSTIN (KXAN) – Sebastian Salazar never claimed to be an environmentalist.

Then came the day he was watching his favorite TV show.

“The DIY Channel, to tell you the truth,” said Salazar. “The Do It Yourself Channel; I love watching the DIY Channel.”

The program dealt with something called a Structural Insulated Panel , or SIP.

“The walls are seven inches thick, or six-and-a-half inches thick,” said Salazar. “And the roof, solid panels are eight-and-a-half inches thick. So it’s just a big jigsaw puzzle put together, you know, out of those panels.”

The panels, constructed off site and put in place with a crane, fit so snugly together, air leaks are minimized, unless you want to take advantage of the steady breeze on Sebastian Salazar’s hilltop near Coupland in Williamson County.

“Like when I was growing up, my grandparents lived out in the country, too, and they always had the windows rolled up, too, to keep the, you know, to keep the air circulating while everybody was in the house,” said Salazar. “And same concept, you know, you got windows on the south side and north side and open up the windows and a nice breeze, you know, just blows right through the house and keeps everybody comfortable. My last month’s electric bill was $43.00 and the highest electric bill I’ve had since December was $53.00.”

 
 

Building with SIPs generally costs about the same as building with wood frame construction, when you factor in the labor savings resulting from shorter construction time and less job-site waste. Other savings are realized because less expensive heating and cooling systems are required with SIP construction.

SIPA does not maintain pricing data from individual manufacturing members. If you are looking for pricing information, please contact our members directly by clicking on “Find SIPs” or complete the form located under “Let’s Talk SIPs” and our members will contact you with information specific to your request.

 

Structural insulated panels (SIPs) are high performance building panels used in floors, walls, and roofs for residential and light commercial buildings. The panels are typically made by sandwiching a core of rigid foam plastic insulation between two structural skins of oriented strand board (OSB). Other skin material can be used for specific purposes. SIPs are manufactured under factory controlled conditions and can be custom designed for each home. The result is a building system that is extremely strong, energy efficient and cost effective. Building with SIPs will save you time, money and labor.

 

This stunning passive solar home in Park City, Utah was selected by Green Builder Magazine as their 2010 Green Home of the Year for its innovative design and net-zero energy performance. Designed by architect Jean-Yves Lacroix, the European-inspired home uses 12-inch structural insulated panels (SIPs) from Premier Building Systems for the walls and roof. The passive solar design maximizes solar heat gain during the winter months and retains that heat using a thick concrete facade and the super-insulated SIP building envelope. An additional 4-inches of rigid foam insualtion was added to the exterior of the 12-inch SIP roof panels for an R-value of R-68.

Ninety percent of the home’s heating and hot water needs are provided by a solar powered system that includes a hydronic radiant heating system with solar collectors on the roof and behind the prefinished steel siding. Hot water is stored in two 5,000 gallon storage tanks and delivered through the radiant heating system as directed by temperature controllers throughout the home. Domestic hot water is also provided by the solar-heated system, aided by a heat recovery exchanger on some wastewater drains and a recirculation system for showers.

“We chose this project as our Green Home of the Year because of the way it marries sleek European design with high performance,” says Green Builder media editorial director Cati O’Keefe. “We received many excellent entries, but this home exemplified how green can be both beautiful and affordable.”

A 6.9kW photovoltaic array on the roof provides more than enough energy to power the home, allowing the owners to sell power back to their utility company.

The builder, Garret Strong of Tall Pines Construction, had the home certified to LEED for Homes Platinum and the Emerald level of the National Green Building Standard.

To see more, check out greenbuildermag.com and Jetson Green.

The NAHB Research Center recently announced the 13 finalists for the 2011 Energy Value Housing Awards (EVHA). Now in its 16th year, the EVHA is supported by the U.S. Department of Energy through its Building America program, the National Association of Home Builders (NAHB), and the National Renewable Energy Laboratory (NREL), in addition to the NAHB Research Center. The EVHA recognizes builders that incorporate energy efficiency into all aspects of new home construction and existing home renovation. Past winners include several high performance structural insulated panel (SIP) homes built by Ferrier Custom Homes, Scott Homes, Fireside Home Construction, and CVH, Inc/Clifton View Homes.

All finalists are in the running for the People’s Choice Award, with voting open to the general public through January 5, 2011. Winners will be announced at a ceremony on Tuesday, January 11, 2011, that takes place during the International Builders’ Show.

Visit the EVHA website to vote.

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Why are king studs sometimes specified alongside SIP headers? The king studs don’t seem to provide any vertical support for the headers.

The purpose of the king studs is to resist lateral wind pressures adjacent to a window or door opening, not to support the header.

-Jim DeStefano

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