Good work on a hot day

We arrived at the site mid-afternoon after Jeff, Tom, Troy and JR had worked a full eight hours. They were winding up; temps have been in the high 90s for a few days, so they’d started early. Tom and JR had the roof nearly covered with waterproof felt, and Troy was sheeting the north wall.

With the second floor nearly enclosed, I was amazed at how big the space is, and it’s especially fantastic with the south wall unsheeted—a great view! This is a bonus space—insulated but unheated, designed for storage at one end and hobbies or play or guest spill-over at the other. Our intention has been to divide play room from storage at the stairs, but today I can’t see a reason not to pull that wall closer to the center to add to the finished space. There’s plenty of room!

The window on the south wall is higher than I imagined. I walked out across the field to see it from the south and saw why it’s there—it’s high enough to be shaded by the eaves, to keep out the summer sun. Perfect!

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Comments

Location

Lanesboro, Minnesota
Climate Zone 6 (cold/moist)
Latitude: 43° 44' 18'' N
Longitude: 91° 54' 48'' W

House Size

Net Treated Floor Area: 1,514 SF
Gross Square Footage (House only): 2,210 SF

Building Envelope

Roof: R-99
Wall: R-61
Ground: R-53

Windows & Doors

Glazing: U-0.10 BTU / hour / sq. ft.
Solar Heat Gain Coefficient (SHGC): 0.48”
Frame: U-0.19 BTU / hour / sq. ft.

Modeled Performance

Specific Primary Energy Demand (Source Energy Demand): 12.1 kBTU / sq. ft. / year

Specific Space Heat Demand: 7.0 kBTU/sq. ft. / year

Peak Heating Load: 7,047 BTU / hour

Space Cooling Demand: 0.44 kBTU / sq. ft. / year

Peak Cooling Load: 3,625 BTU / hour

Pressure Test Goal: Whole House Air Changes Per Hour (ACH) = 0.4 ACH 50

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