Page 15 - GB Building Science Ebook 2019

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 (walls and roof), ICF formed stemwalls, triple glazing
throughout, sprayfoamed RIM
CABINETS, SHELVES, MILLWORK: locally made, FSC; Blum hardware
CAULKS AND SEALANTS: Zero VOC
COUNTERTOPS: Quartz
DECKS: Sustainable Northwest Wood—FSC cedar
Simply SIPs. DOORS AND HARDWARE: FSC wood doors
Creating a super-insulated ELECTRICAL: 9.9 kW on roof
airtight envelope with structural PANELS: 33x itek 300-W solar panels, locally made (Bellingham, WA)
insulated panels drastically INVERTER: SMA Sunny Boy 7.8 kW, US
reduced heating and cooling NURIO REMOTE MONITORING OF SOLAR ENERGY PRODUCTION
demand. FLOORING: Marmoleum (70 percent rapidly renewable content, 43 percent
recycled content); Wicanders Cork (renewable); QuietWalk (95 percent post-
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
HEAT PUMP: Chiltrix CX34
certification through the Built Green program—the most stringent INSULATION: R-29 walls, R-49 roof, R-23.5 perimeter and R-20 slab
level—include two electric vehicle charging stations, zero-VOC LIGHTING: 100 percent LED
finishes, FSC-certified lumber and no PVC. PAINTS AND STAINS: All zero VOC
Clifton builds four to five homes a year, but he would like to spread PLUMBING/PLUMBING FIXTURES: No PVC
his winning formula more broadly, possibly by partnering with a RENEWABLE ENERGY SYSTEMS (SOLAR, WIND, ETC.): Solar, rainwater
Seattle-area production builder—one who builds hundreds or even 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
PROJECT STATS SECTIONS
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

BUILDING SCIENCE SPECIAL REPORT: SIX WAYS CONSTRUCTION IS CHANGING 15