Charlotte VT House
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.
Envelope
Air Changes per hour, ACH50
1.00 ACH50
Air Changes per hour, CFM50
600.00
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. |
Envelope
| Air Changes per hour, ACH50 | 1.00 ACH50 |
|---|---|
| Air Changes per hour, CFM50 | 600.00 |