Ross Residence
Walls and Roof
Subslab assembly
Existing slab was retained; no sub-slab insulation installed.
Slab edge assembly
Existing slab was retained; no slab-edge insulation added.
Foundation wall assembly
Brick and Fieldstone foundation wall insulated to the inside with closed cell spray foam to R-30 (5 inches)
Foundation wall R-value
30.0
Above grade wall assembly
R-33+. Existing Above Grade Walls - 4” studs with existing board sheathing – retained. New Walls with 2x6 framing.
All walls insulated to the outside with (2) 1.5” layers of foil-faced polyiso, staggered and taped at all seams as air barrier.
Walls insulated to the inside with 4” (or 5.5”) Open Cell Spray Foam. Here, the use of open cell foam avoids a double vapor barrier at the above grade framing and sheathing, and provides further air barrier adhered to the existing board sheathing.
Above grade wall R-value
33.0
Flat attic assembly
Small portions of the third floor have flat ceilings, with lighting and refrigerant piping concealed above.
Cathedral ceiling assembly
Entire roof re-framed with 2x12 rafters to provide deep cavity for cellulose. Insulated to the outside with the same 3” of polyiso for an R-54 roof assembly.
Windows and Doors
Window Assembly:
49 windows from Fibertec, Casement 300 series. U-values range from 0.13 – 0.18 for fixed, awning, and casements.
Door Assembly:
2 doors from Fibertec, 200 series, Triple-pane, low-e. 1 door from Simpson (Model 7008 w/ insulated glass)
Average window U-factor
0.15
Mechanical Systems
Space cooling - Manufacturer & Model
Air-source heat pump by Mitsubishi – VRF City Multi (One PUMY R410A S-series outdoor unit, Two PKFY wall-mounted indoor units, and Three PDFY ceiling concealed indoor units)
Space heating - Manufacturer & Model
Air-source heat pump by Mitsubishi – VRF City Multi (One PUMY R410A S-series outdoor unit, Two PKFY wall-mounted indoor units, and Three PDFY ceiling concealed indoor units)
Domestic hot water - Manufacturer & Model
Air-source heat pump hot water heater by SteibelEltron (80 gal. Accelera 300)
Domestic hot water - capacity
80 gal
Ventilation - Manufacturer & Model
VenmarHRV EKO 1.5 (Model No. 43900)
Lighting Manufacturer and Model
46 Juno LED cans
Lighting Efficiency
Mechanical Equipment Installation Details and Comments
Lighting in the house is predominantly achieved through 46 Juno LED cans. In bedrooms and in bathrooms, ceiling mounts and sconces use CFLs and halogens. Total lighting is 0.88W/sf.
Walls and Roof
| Subslab assembly |
Existing slab was retained; no sub-slab insulation installed. |
|---|---|
| Slab edge assembly |
Existing slab was retained; no slab-edge insulation added. |
| Foundation wall assembly |
Brick and Fieldstone foundation wall insulated to the inside with closed cell spray foam to R-30 (5 inches) |
| Foundation wall R-value | 30.0 |
| Above grade wall assembly |
R-33+. Existing Above Grade Walls - 4” studs with existing board sheathing – retained. New Walls with 2x6 framing. |
| Above grade wall R-value | 33.0 |
| Flat attic assembly |
Small portions of the third floor have flat ceilings, with lighting and refrigerant piping concealed above. |
| Cathedral ceiling assembly |
Entire roof re-framed with 2x12 rafters to provide deep cavity for cellulose. Insulated to the outside with the same 3” of polyiso for an R-54 roof assembly. |
Windows and Doors
Window Assembly:
49 windows from Fibertec, Casement 300 series. U-values range from 0.13 – 0.18 for fixed, awning, and casements.
Door Assembly:
2 doors from Fibertec, 200 series, Triple-pane, low-e. 1 door from Simpson (Model 7008 w/ insulated glass)
| Average window U-factor | 0.15 |
|---|
Mechanical Systems
| Space cooling - Manufacturer & Model | Air-source heat pump by Mitsubishi – VRF City Multi (One PUMY R410A S-series outdoor unit, Two PKFY wall-mounted indoor units, and Three PDFY ceiling concealed indoor units) |
|---|---|
| Space heating - Manufacturer & Model | Air-source heat pump by Mitsubishi – VRF City Multi (One PUMY R410A S-series outdoor unit, Two PKFY wall-mounted indoor units, and Three PDFY ceiling concealed indoor units) |
| Domestic hot water - Manufacturer & Model | Air-source heat pump hot water heater by SteibelEltron (80 gal. Accelera 300) |
| Domestic hot water - capacity | 80 gal |
| Ventilation - Manufacturer & Model | VenmarHRV EKO 1.5 (Model No. 43900) |
| Lighting Manufacturer and Model | 46 Juno LED cans |
| Lighting Efficiency | |
| Mechanical Equipment Installation Details and Comments |
Lighting in the house is predominantly achieved through 46 Juno LED cans. In bedrooms and in bathrooms, ceiling mounts and sconces use CFLs and halogens. Total lighting is 0.88W/sf. |