Hollis, NH DER
Walls and Roof
Increased R-values of basement floors to 20, basement walls to 40, exterior walls to 40, cathedral ceilings to 60, and flat ceilings to 70
Subslab assembly
n/a
Subslab R-value
20.0
Slab edge assembly
Since this was a retrofit, could not insulate slab edge. I stead slab was insulated on top with 2 inches of ridged foam and sheathed with 3/4" t&g plywood
Foundation wall assembly
4 inches of polyiso, and 4 inches of fiberglass batts on inside of foundation wall. All joints in polyiso were sealed.
Foundation wall R-value
40.0
Above grade wall assembly
Existing 2x4 walls with 1/2
Above grade wall R-value
40.0
Flat attic assembly
1/2" drywall, 5" blown-in cellulose (existing), 2" polyiso sheathing, 12" blown-in cellulose, perimeter spray foamed for air sealing
Flat attic R-value
70.0
Cathedral ceiling assembly
1/2" drywall, Smart-poly membrane, 5-1/2" dense pack cellulose, 5-1/2" closed cell foam
Cathedral ceiling R-value
60.0
Roof Assembly
n/a
Windows and Doors
Window Assembly:
South facing: Weather Shield, triple pane with Cardinal 180, clear,180: SHGC = 0.56
All others, Marvin Integrity, triple pane with Cardinal 282, clear, 282: SHGC = 0.32
Door Assembly:
Therma-Tru solid core
Average window U-factor
0.17
Solar Heat Gain Coefficient
0.56
Visible Light Transmittance
0.41
Door U-Factor
0.10
Door Area
21 sq ft
Mechanical Systems
Space heating - Manufacturer & Model
Fitjitsu Min-split Heat Pump
Space heating - capacity
24 kW
Domestic hot water - Manufacturer & Model
GE GEH80DEEJSC Heat Pump Water Heater
Domestic hot water - capacity
80 gal
Domestic hot water - efficiency
320 kW
Ventilation - Manufacturer & Model
Zehnder HRV
Lighting Manufacturer and Model
All LED
Lighting Efficiency
100
Mechanical Equipment Installation Details and Comments
A blower door test will be performed when house gets near completion. All penetrations were sealed from inside and outside. Condensing dryer and re-circulating range hood preclude big holes in envelope
Walls and Roof
Increased R-values of basement floors to 20, basement walls to 40, exterior walls to 40, cathedral ceilings to 60, and flat ceilings to 70
| Subslab assembly |
n/a |
|---|---|
| Subslab R-value | 20.0 |
| Slab edge assembly |
Since this was a retrofit, could not insulate slab edge. I stead slab was insulated on top with 2 inches of ridged foam and sheathed with 3/4" t&g plywood |
| Foundation wall assembly |
4 inches of polyiso, and 4 inches of fiberglass batts on inside of foundation wall. All joints in polyiso were sealed. |
| Foundation wall R-value | 40.0 |
| Above grade wall assembly |
Existing 2x4 walls with 1/2 |
| Above grade wall R-value | 40.0 |
| Flat attic assembly |
1/2" drywall, 5" blown-in cellulose (existing), 2" polyiso sheathing, 12" blown-in cellulose, perimeter spray foamed for air sealing |
| Flat attic R-value | 70.0 |
| Cathedral ceiling assembly |
1/2" drywall, Smart-poly membrane, 5-1/2" dense pack cellulose, 5-1/2" closed cell foam |
| Cathedral ceiling R-value | 60.0 |
| Roof Assembly |
n/a |
Windows and Doors
Window Assembly:
South facing: Weather Shield, triple pane with Cardinal 180, clear,180: SHGC = 0.56
All others, Marvin Integrity, triple pane with Cardinal 282, clear, 282: SHGC = 0.32
Door Assembly:
Therma-Tru solid core
| Average window U-factor | 0.17 |
|---|---|
| Solar Heat Gain Coefficient | 0.56 |
| Visible Light Transmittance | 0.41 |
| Door U-Factor | 0.10 |
| Door Area | 21 sq ft |
Mechanical Systems
| Space heating - Manufacturer & Model | Fitjitsu Min-split Heat Pump |
|---|---|
| Space heating - capacity | 24 kW |
| Domestic hot water - Manufacturer & Model | GE GEH80DEEJSC Heat Pump Water Heater |
| Domestic hot water - capacity | 80 gal |
| Domestic hot water - efficiency | 320 kW |
| Ventilation - Manufacturer & Model | Zehnder HRV |
| Lighting Manufacturer and Model | All LED |
| Lighting Efficiency | 100 |
| Mechanical Equipment Installation Details and Comments |
A blower door test will be performed when house gets near completion. All penetrations were sealed from inside and outside. Condensing dryer and re-circulating range hood preclude big holes in envelope |