Project Specs
| Location: |
Duncan, British Columbia |
| Climate Zone: |
Cool-Temperate |
| Building Type: |
Single Family Residential |
| Project Phase: |
Certified |
| Certification Type: |
Passive House Classic |
| Year of Construction: |
2019 |
| Gross Floor Area (m2): |
535.5 |
| Treated Floor Area (m2): |
312 |
| PHPP Verification: |
Download |
Project Description
Beautiful Passive House in the Cowichan Valley, British Columbia designed by Ecocentric Design, designer Hajo Meijer and built by Somenos Construction.
The Maple Bay Passive House is a 4 bed room home with an in-law suite and a detached carport on the slopes of Maple Mountain. Targeting PH Plus certification, it incorporates a 12 kW PV solar array and a Sanden HP. The many evergreen trees surrounding the site proved to be a challenge for solar ingress, resulting in a building with thick layers of insulation. Rain water will be harvested for garden irrigation and materials used are mostly natural and carbon sequestering:
– wood structure
– rockwool and cellulose insulation
– concrete foundation with graphite infused EPS below grade only
– metal and wood cladding
– metal roofing
Thermal Envelope
| Exterior Wall: |
Drywall; 2x4 stud service fibreglass; plywood sheathing; TJI 110 w/ dense pack cellulose; Rockwool comfort board: U-value = 0.095 W/m2K |
| Basement Floor/Floor Slab: |
Concrete slab; Heat-sheet EPS tube locks; Heat-sheet EPS; Terrafoam platinum GPS Type 2: U-value = 0.113 W/m2K |
| Roof: |
T&G; 2x6 stud cavity Air; Parallel Cord Trusses w/ Dense pack cellulose; Plywood sheathing: U-value = 0.086 W/m2K |
| Window: |
Cascadia Windows & Doors, Universal Series PH |
Mechanical System
| Ventilation: |
Zehnder Q450, 88% effective heat recovery efficiency |
| Heating/Cooling: |
In-floor hydronic loop from DHW |
| Domestic Hot Water: |
Sanden heat pump |
