Poplar House
Walls and Roof
PERSIST/REMOTE technique. Liquid applied barriers when possible to prevent peel-back and other issues with pressure applied air barriers. Super Insulation, multi-layer, offset seams throughout project.
| Subslab assembly |
Two layers of 2.75" EPS, offset overlaps. Stego vapor barrier, mastic, tape sealed. |
|---|---|
| Subslab R-value | 22.0 |
| Slab edge assembly |
Nudura ICF, with additional layer of 2.75" EPS to interior and overlap of sub slab EPS, to prevent thermal bridging. |
| Slab edge R-value | 37.0 |
| Foundation wall assembly |
Waterproofing membrane, ICF Nudura block, with additional 2.75" EPS to interior. 2x4, and drywall to interior. |
| Foundation wall R-value | 37.0 |
| Above grade wall assembly |
Siding, 1/2" minimum rainscreen strapping, one layer of 3.25" EPS, two layers of 2.75" EPS, seams offset, sealed, taped, liquid applied air barrier, OSB, blown-in cellulose, drywall |
| Above grade wall R-value | 54.0 |
| Cathedral ceiling assembly |
standing seam, 5/8" plywood, cold roof vent, supplemental rafter/cold roof, 6 layers of 2.75 EPS, Vapor barrier, 1/2" OSB, barnboard strip sheathing (exposed to interior), exposed rafters. |
| Cathedral ceiling R-value | 70.0 |
| Roof Assembly |
standing seam, 5/8" plywood, cold roof vent, supplemental rafter/cold roof, 6 layers of 2.75 EPS, Vapor barrier, 1/2" OSB, barnboard strip sheathing (exposed to interior), exposed rafters. |
| Roof R-value | 70.0 |
Windows and Doors
Window Assembly:
Marvin Next Generation Triple Pane
Door Assembly:
Therma Tru
| Average window U-factor | 0.23 |
|---|---|
| Solar Heat Gain Coefficient | 0.22 |
Mechanical Systems
| Space heating - Manufacturer & Model | Mitsubishi Mini Splits |
|---|---|
| Domestic hot water - Manufacturer & Model | A.O. Smith HPWH - 3.10EF |
| Domestic hot water - capacity | 80 gal |
| Ventilation - Manufacturer & Model | Zehnder Comfofond 550 |
| Lighting Manufacturer and Model | LED - unknown |
| Lighting Efficiency | |
| Mechanical Equipment Installation Details and Comments |
blower door to be done. |
Envelope
| Air Changes per hour, ACH50 | 1.00 ACH50 |
|---|---|
| Air Changes per hour, CFM50 |