Launch Slideshow

Name: Terra Numa, St. George, UtahSize: 2,772 square feetConstruction Cost: $658,000Completed: January 2011Certifications: National Green Building Standard-Silver, Energy StarHERS Rating: 59Architect: Gulch Design Group, Ivins, UtahBuilder: J2 Construction, St. GeorgeStructural Engineer:  Weaver Engineering, St. George

Terra Numa: Green Details & Products

Terra Numa: Green Details & Products

  • Name: Terra Numa, St. George, UtahSize: 2,772 square feetConstruction Cost: $658,000Completed: January 2011Certifications: National Green Building Standard-Silver, Energy StarHERS Rating: 59Architect: Gulch Design Group, Ivins, UtahBuilder: J2 Construction, St. GeorgeStructural Engineer:  Weaver Engineering, St. George

    http://www.ecobuildingpulse.com/Images/tmpA90D%2Etmp_tcm131-723217.jpg

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    Name: Terra Numa, St. George, UtahSize: 2,772 square feetConstruction Cost: $658,000Completed: January 2011Certifications: National Green Building Standard-Silver, Energy StarHERS Rating: 59Architect: Gulch Design Group, Ivins, UtahBuilder: J2 Construction, St. GeorgeStructural Engineer: Weaver Engineering, St. George

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    Danny Lee

    Name: Terra Numa, St. George, Utah
    Size: 2,772 square feet
    Construction Cost: $658,000
    Completed: January 2011
    Certifications: National Green Building Standard-Silver, Energy Star
    HERS Rating: 59
    Architect: Gulch Design Group, Ivins, Utah
    Builder: J2 Construction, St. George
    Structural Engineer: Weaver Engineering, St. George

  • The Kohler 2.2-gpm Simplice pull-down faucet and Energy Star appliances from KitchenAid conserve water and energy in the kitchen. Recycled-glass tile from Walker Zanger provides a striking backsplash with desert-inspired hues. Kohler: 800.456.4537. www.kohler.com. KitchenAid: 800.422.1230. www.kitchenaid.com. Walker Zanger: 732.697.7700. www.walkerzanger.com.

    http://www.ecobuildingpulse.com/Images/tmpA912%2Etmp_tcm131-723222.jpg

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    The Kohler 2.2-gpm Simplice pull-down faucet and Energy Star appliances from KitchenAid conserve water and energy in the kitchen. Recycled-glass tile from Walker Zanger provides a striking backsplash with desert-inspired hues. Kohler: 800.456.4537. www.kohler.com. KitchenAid: 800.422.1230. www.kitchenaid.com. Walker Zanger: 732.697.7700. www.walkerzanger.com.

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    Danny Lee

    The Kohler 2.2-gpm Simplice pull-down faucet and Energy Star appliances from KitchenAid conserve water and energy in the kitchen. Recycled-glass tile from Walker Zanger provides a striking backsplash with desert-inspired hues. Kohler: 800.456.4537. www.kohler.com. KitchenAid: 800.422.1230. www.kitchenaid.com. Walker Zanger: 732.697.7700. www.walkerzanger.com.

  • LANDSCAPINGThe site design preserved 70% of the lots existing vegetation such as black sage, indigo, and creosote. The small amount of watering that is required for the yards drought-tolerant plants and treesincluding prickly pear, yucca, and Arizona rosewoodis controlled via a Rainbird drip irrigation system. Instead of turf, permeable crushed sandstone covers the ground and chat, a type of crushed granite, is used for planting beds instead of mulch. 800.724.6247. www.rainbird.com. ROOFINGThe PVC roof from IB Roof carries a Class A fire rating for flame resistance, has a life expectancy of up to 40 years, and is 100% recyclable. A foil-backed Energy Starrated Insulfoam radiant barrier, 2 inches of closed-cell spray foam, and 12 inches of cellulose up the roofs R-value to 50. It is prewired for solar panels. IB Roof Systems: 800.426.1626. www.ibroof.com. Insulfoam: 800.248.5995. www.insulfoam.com. INSULATIONBy relying on a mix of closed-cell spray foam and cellulose insulation, Joines saved $5,700 compared to using spray foam alone. The products he chose also take indoor air quality and material conservation into consideration. Demilecs Heatlok Soy, made of recycled plastic and renewable soy oils, is Greenguard Indoor Air Quality and Greenguard for Children and Schools certified. Formaldehyde-free blown cellulose from GreenFiber is SCS certified for a minimum of 85% recycled content, mostly post-consumer paper fiber. Demilec: 877.336.4532. www.demilecusa.com. GreenFiber: 800.228.0024. www.greenfiber.com.

    http://www.ecobuildingpulse.com/Images/tmpA90E%2Etmp_tcm131-723218.jpg

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    LANDSCAPINGThe site design preserved 70% of the lots existing vegetation such as black sage, indigo, and creosote. The small amount of watering that is required for the yards drought-tolerant plants and treesincluding prickly pear, yucca, and Arizona rosewoodis controlled via a Rainbird drip irrigation system. Instead of turf, permeable crushed sandstone covers the ground and chat, a type of crushed granite, is used for planting beds instead of mulch. 800.724.6247. www.rainbird.com. ROOFINGThe PVC roof from IB Roof carries a Class A fire rating for flame resistance, has a life expectancy of up to 40 years, and is 100% recyclable. A foil-backed Energy Starrated Insulfoam radiant barrier, 2 inches of closed-cell spray foam, and 12 inches of cellulose up the roofs R-value to 50. It is prewired for solar panels. IB Roof Systems: 800.426.1626. www.ibroof.com. Insulfoam: 800.248.5995. www.insulfoam.com. INSULATIONBy relying on a mix of closed-cell spray foam and cellulose insulation, Joines saved $5,700 compared to using spray foam alone. The products he chose also take indoor air quality and material conservation into consideration. Demilecs Heatlok Soy, made of recycled plastic and renewable soy oils, is Greenguard Indoor Air Quality and Greenguard for Children and Schools certified. Formaldehyde-free blown cellulose from GreenFiber is SCS certified for a minimum of 85% recycled content, mostly post-consumer paper fiber. Demilec: 877.336.4532. www.demilecusa.com. GreenFiber: 800.228.0024. www.greenfiber.com.

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    Danny Lee

    LANDSCAPING
    The site design preserved 70% of the lots existing vegetation such as black sage, indigo, and creosote. The small amount of watering that is required for the yards drought-tolerant plants and treesincluding prickly pear, yucca, and Arizona rosewoodis controlled via a Rainbird drip irrigation system. Instead of turf, permeable crushed sandstone covers the ground and chat, a type of crushed granite, is used for planting beds instead of mulch. 800.724.6247. www.rainbird.com.

    ROOFING
    The PVC roof from IB Roof carries a Class A fire rating for flame resistance, has a life expectancy of up to 40 years, and is 100% recyclable. A foil-backed Energy Star-rated Insulfoam radiant barrier, 2 inches of closed-cell spray foam, and 12 inches of cellulose up the roofs R-value to 50. It is prewired for solar panels. IB Roof Systems: 800.426.1626. www.ibroof.com. Insulfoam: 800.248.5995. www.insulfoam.com.

    INSULATION
    By relying on a mix of closed-cell spray foam and cellulose insulation, Joines saved $5,700 compared to using spray foam alone. The products he chose also take indoor air quality and material conservation into consideration. Demilec's Heatlok Soy, made of recycled plastic and renewable soy oils, is Greenguard Indoor Air Quality and Greenguard for Children and Schools certified. Formaldehyde-free blown cellulose from GreenFiber is SCS certified for a minimum of 85% recycled content, mostly post-consumer paper fiber. Demilec: 877.336.4532. www.demilecusa.com. GreenFiber: 800.228.0024. www.greenfiber.com.

  • WINDOWSDeeply recessed Energy Starrated aluminum windows from Eagle feature a U-value of 0.30 and a solar heat gain coefficient of 0.29. The low-E argon-filled units come with double weather-stripping, which helps to eliminate air and water infiltration while providing exceptional noise control, according to the company. 800.324.5354. www.eaglewindow.com.  LIGHTINGTo cut down on electric load, Joines uses high-efficiency lighting products whenever possible. For the Terra Numa project he speced Sylvania LEDs with 20 times the lifespan and 70% less energy consumption than incandescents. 800.544.4828. www.sylvania.com.

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    WINDOWSDeeply recessed Energy Starrated aluminum windows from Eagle feature a U-value of 0.30 and a solar heat gain coefficient of 0.29. The low-E argon-filled units come with double weather-stripping, which helps to eliminate air and water infiltration while providing exceptional noise control, according to the company. 800.324.5354. www.eaglewindow.com. LIGHTINGTo cut down on electric load, Joines uses high-efficiency lighting products whenever possible. For the Terra Numa project he speced Sylvania LEDs with 20 times the lifespan and 70% less energy consumption than incandescents. 800.544.4828. www.sylvania.com.

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    Danny Lee

    WINDOWS
    Deeply recessed Energy Star-rated aluminum windows from Eagle feature a U-value of 0.30 and a solar heat gain coefficient of 0.29. The low-E argon-filled units come with double weather-stripping, which helps to eliminate air and water infiltration while providing exceptional noise control, according to the company. 800.324.5354. www.eaglewindow.com.

    LIGHTING
    To cut down on electric load, Joines uses high-efficiency lighting products whenever possible. For the Terra Numa project he speced Sylvania LEDs with 20 times the lifespan and 70% less energy consumption than incandescents. 800.544.4828. www.sylvania.com.

  • INDOOR AIR QUALITYA 70-cfm Fantech ERV exhausts stale air from each bathroom and brings fresh, cooled air into the bedrooms, reducing the load on the homes air conditioning system. Polished concrete floors and walls finished with low-VOC Kwal paint also help maintain healthy indoor air. Fantech: 800.747.1762. www.fantech.net. Kwal: www.kwalpaint.com. BATHROOMsHelping to keep water use low are WaterSense-certified 1.5-gpm Eva lav faucets from Moen and Kohler Highline dual-flush toilets with Class Five flushing technology, which features a specially engineered water flow for powerful but efficient flushing performance. Moen: 800.289.6636. www.moen.com. Kohler: 800.456.4537. www.kohler.com.

    http://www.ecobuildingpulse.com/Images/tmpA90C%2Etmp_tcm131-723216.jpg

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    INDOOR AIR QUALITYA 70-cfm Fantech ERV exhausts stale air from each bathroom and brings fresh, cooled air into the bedrooms, reducing the load on the homes air conditioning system. Polished concrete floors and walls finished with low-VOC Kwal paint also help maintain healthy indoor air. Fantech: 800.747.1762. www.fantech.net. Kwal: www.kwalpaint.com. BATHROOMsHelping to keep water use low are WaterSense-certified 1.5-gpm Eva lav faucets from Moen and Kohler Highline dual-flush toilets with Class Five flushing technology, which features a specially engineered water flow for powerful but efficient flushing performance. Moen: 800.289.6636. www.moen.com. Kohler: 800.456.4537. www.kohler.com.

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    Danny Lee

    INDOOR AIR QUALITY
    A 70-cfm Fantech ERV exhausts stale air from each bathroom and brings fresh, cooled air into the bedrooms, reducing the load on the homes air conditioning system. Polished concrete floors and walls finished with low-VOC Kwal paint also help maintain healthy indoor air. Fantech: 800.747.1762. www.fantech.net. Kwal: www.kwalpaint.com.

    BATHROOMS
    Helping to keep water use low are WaterSense-certified 1.5-gpm Eva lav faucets from Moen and Kohler Highline dual-flush toilets with Class Five flushing technology, which features a specially engineered water flow for powerful but efficient flushing performance. Moen: 800.289.6636. www.moen.com. Kohler: 800.456.4537. www.kohler.com.

  • As part of a zoned heating and cooling approach, six high-efficiency 14-SEER Fujitsu Halcyon mini-splits are concealed above closets and behind return air grilles, while two Energy Starrated 15-SEER LG cassette units (one shown here) are mounted directly on the wall. The systems four compressors are located outside. Fujitsu: 888.888.3424. www.fujitsugeneral.com. LG: 800.243.0000. www.lg.com.

    http://www.ecobuildingpulse.com/Images/tmpA90B%2Etmp_tcm131-723215.jpg

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    As part of a zoned heating and cooling approach, six high-efficiency 14-SEER Fujitsu Halcyon mini-splits are concealed above closets and behind return air grilles, while two Energy Starrated 15-SEER LG cassette units (one shown here) are mounted directly on the wall. The systems four compressors are located outside. Fujitsu: 888.888.3424. www.fujitsugeneral.com. LG: 800.243.0000. www.lg.com.

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    Danny Lee

    As part of a zoned heating and cooling approach, six high-efficiency 14-SEER Fujitsu Halcyon mini-splits are concealed above closets and behind return air grilles, while two Energy Star-rated 15-SEER LG cassette units (one shown here) are mounted directly on the wall. The systems four compressors are located outside. Fujitsu: 888.888.3424. www.fujitsugeneral.com. LG: 800.243.0000. www.lg.com.

Window placement was carefully considered to optimize and control the hot desert sun while silhouetting the jaw-dropping views. Marten placed tall picture windows on the north side to reveal nearby Red Mountain and low, wide windows on the south side to take in the open range and far-off horizon.

“We have 360-degree views here, so we have to be selective of the ones we take advantage of,” Marten says. “Even if it’s a small window, we make sure it’s in just the right place to frame a specific view.”

A two-car garage, a bike garage, and a recessed front entry make up most of the western side of the house, which contains no windows, shielding the rest of the dwelling from the sun during the hottest part of the day. To the north and south, respectively, patio doors provide access to a courtyard and a covered patio, which further reinforce the home’s connection to the outdoors and bring in cross breezes during the milder months of the year.

Water conservation was also a top priority. Low-flow faucets and showerheads, low-gpf toilets, and a high-efficiency washing machine and dishwasher keep water use low inside while the landscape design employs drought-tolerant native plants, a drip irrigation system, and a permeable crushed sandstone and gravel driveway.

Terra Numa is Joines’ second NGBS-certified project, a detail the homeowners insisted on. “They saw value in having the certification, especially for resale,” he says, adding that the Southern Utah Home Builders Association’s Southwest Green Build Council (of which he is chairman) is working with area Realtors to help add green features to the local MLS, an initiative that will help owners get an optimum return on their investment when they sell a green home.

Building such a one-of-a-kind home put Joines at a disadvantage with the NGBS rating system, which requires higher point totals within each category as higher certification levels are sought. He struggled to achieve a Silver-level rating in the program’s Resource Efficiency division, even though he achieved much higher levels—equivalent to Gold and Emerald—in all other areas. “My homes are pretty custom, so I can’t get any points for prefab panelized framing or for keeping everything on 2-foot centers that minimize how much lumber you use,” he explains.

The three-bedroom, three-bath home is located in the 2,000-acre master-planned Kayenta community, which enforces strict design covenants to ensure homes blend in with the austere environment. Marten and Joines had to maintain and preserve much of the site’s natural vegetation and limit the building footprint to less than 30% of the 0.75-acre lot. They also had to abide by a 13-foot height restriction, a flat-roof requirement, night-sky restrictions, and an extremely limited brown color palette for exterior materials.

“The key is actually to downplay the architecture so we don’t lose the natural park-like setting,” Marten says. “The one factor that is common to all Kayenta residents is living in and respecting the natural landscape.”

Jennifer Goodman is managing editor of EcoHome.