Walls and Roof

The house was conventionally framed with 2 x 6 studs with closed cell spray foam, with rigid insulation on the exterior, creating a thermal bridge free wall system. Air barrier on the exterior. All plates and double studs caulked. Roof -2x12 rafters filled with closed cell spray foam

Subslab assembly

4" of EPS wrapped up to isolate 4" conc slab

Subslab R-value 20.0
Slab edge assembly

2" EPS

Slab edge R-value 10.0
Foundation wall assembly

From exterior to interior - 8" of concrete, 2" of EPS 2x4 dense pack cellulose

Foundation wall R-value 22.0
Above grade wall assembly

2 x 6 studs with closed cell foam with 1.5" of continuous rigid insulation on the exterior.

Above grade wall R-value 42.0
Cathedral ceiling assembly

Attic 2x12 rafters filled with closed cell foam

Cathedral ceiling R-value 67.0
Roof R-value 60.0

Windows and Doors

Window Assembly:

Thermotech fiberglass windows

Door Assembly:

Thermatru doors fiberglass.

Average window U-factor 0.17
Solar Heat Gain Coefficient 0.65
Visible Light Transmittance 0.45
Door Area 60 sq ft

Mechanical Systems

Space heating - Manufacturer & Model Econar ground source heat pump
Space heating - capacity 10,000 kW
Domestic hot water - Manufacturer & Model Econar ground source heat pump
Domestic hot water - capacity 80 gal
Ventilation - Manufacturer & Model Venmar
Lighting Manufacturer and Model All CFL as they burn out switching to LED
Lighting Efficiency
Mechanical Equipment Installation Details and Comments

System was designed by an engineer, third party tested. HRV was tested with Flow hood, blower door was performed.


Air Changes per hour, ACH50 1.00 ACH50
Air Changes per hour, CFM50 600.00