The Cork Haus

The Cork Haus

Vital Stats

Certification Status Zero Energy Certified
Version of LBC 3.1
Location Seattle, WA, USA
Typology Building
Project Area 1,711 SF
Start of Occupancy January 2015
Owner Occupied Yes
Occupancy Type Single Family Residence
Number of Occupants 2

Project Team

Owner Dwell Development
Owner Representative Anthony Maschmedt
Architect JW Architects
Energy Engineer Evergreen Certified
Key Subcontractors Puget Sound Solar, Washington State University, Built Green
Photo Courtesy of Dwell Development Photo Courtesy of Dwell Development

Building Systems Information

Wall R value and section specification R-31.4. Double 2x4 stud wall, 12” cavity dense-packed R-46 cellulose, ½” OSB sheathing, fluid applied
Roof R value and section specification R-100
Floor R value and section specification R-41.6
Windows Triple pane, low-e, argon filled, wood framed, .13 U-Value, .50 SHGC
Air infiltration rate and sealing protocol 1.17 (ACH-50). Fluid applied water/air barrier, interior air seal, minimal penetrations on exterior walls.

Mechanical Heating and Cooling

Air Source Heat Pump, 50-gallon tank.

Mechanical Ventilation

Merv 7 filters, Zendher 100 CFM.

Lighting

100% LED lights.

User Load Reduction Strategies

Optimizing southern and western exposure. Double height spaces that maximize natural light.

Renewable Production Systems Information

8.1 kW roof-mounted PV array.

Performance

Actual energy use during performance period 6546 kWh
Actual energy produced during performance period 6632 kWh
Net Energy Use -86 kWh
EUI 13 kBTU/sf/yr
Photo Courtesy of Dwell Development Photo Courtesy of Dwell Development