Page 39 - Green Builder Magazine March-April 2018 Issue

Requirements achieved. To achieve Emerald Star Built Green
certification, this home had to meet stringent standards for Site and
Water, Energy Efficiency, Indoor Air Quality and Materials Selection.

Key Components
AUTOMOTIVE (ELECTRIC CAR CHARGING, ETC.): 2 stations: 1 internal, 1
external; 50a 120/240v
BUILDING ENVELOPE: SIPs, ICF formed stemwalls, triple glazing throughout,
sprayfoamed RIM
WALLS AND ROOF: Premier SIPS platinum with Neopor GPS foam; 6.5-inch
walls (R29), 10.25-inch roof (R49)
ICF FORMS: NuDura ICFs
CABINETS, SHELVES, MILLWORK: locally made, FSC; Blum hardware
CAULKS AND SEALANTS: Zero VOC
COUNTERTOPS: Quartz
DECKS: Sustainable Northwest Wood—FSC cedar
DOORS AND HARDWARE: FSC wood doors
Simply SIPs. ELECTRICAL: 9.9 kW on roof
PANELS: 33x itek 300-W solar panels, locally made (Bellingham, WA)
Creating a super-insulated INVERTER: SMA Sunny Boy 7.8 kW, US
airtight envelope with NURIO REMOTE MONITORING OF SOLAR ENERGY PRODUCTION
structural insulated panels FLOORING: Marmoleum (70 percent rapidly renewable content, 43 percent
drastically reduced heating recycled content); Wicanders Cork (renewable); QuietWalk (95 percent post-
and cooling demand. industrial fibers); acoustic subfloor layer; FSC white oak, Salmon Bay concrete
(machine grind finish) with 30 percent slag
GARAGE DOORS: R-15 single-car door
HVAC/DUCTS: Spiral metal
HRV: Zehnder ComfoAir 250
Other features that helped the home earn its Emerald Star
certification through the Built Green program—the most stringent HEAT PUMP: Chiltrix CX34
level—include two electric vehicle charging stations, zero-VOC INSULATION: R-29 walls, R-49 roof, R-23.5 perimeter and R-20 slab
finishes, FSC-certified lumber and no PVC. LIGHTING: 100 percent LED
Clifton builds four to five homes a year, but he would like to spread PAINTS AND STAINS: All zero VOC
his winning formula more broadly, possibly by partnering with a PLUMBING/PLUMBING FIXTURES: No PVC
Seattle-area production builder—one who builds hundreds or even RENEWABLE ENERGY SYSTEMS (SOLAR, WIND, ETC.): Solar, rainwater
catchment
thousands of homes a year. SPECIALTY PRODUCTS: Reclaimed internal glazing
“From a moral standpoint, it would be a shame to know how to TILE: Stonepeak Zebrino and Palazzo (66 percent recycled content)
build net-energy-positive homes and not do it,” says Clifton. GB 50-YEAR LIFESPAN FIBER-CEMENT SIDING PANELS
SUSTAINABLE NORTHWEST WOOD, FSC REDWOOD LUMBER SIDING
SECTIONS
Project Stats STRUCTURAL COMPONENTS: SIPs envelope and all FSC structural and non-
structural lumber
NAME: Net Zero Home in West Seattle
WATER MANAGEMENT (INDOOR/OUTDOOR): Permeable concrete hard
ARCHITECT/DESIGNER: TC Legend Homes surfaces; rainwater catchment (from metal roof) and purification as primary
BUILDER: TC Legend Homes water source (10,000-gallon water storage on site)
PHOTOGRAPHER: Jake Evans WINDOW COVERINGS: Custom window shades

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