DOE Tour of Zero: Historic Infill by SK Collaborative
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SK Collaborative built this 2,646-square-foot custom home in Decatur, Georgia, to the high performance criteria of the U.S. Department of Energy Zero Energy Ready Home (ZERH) program.
The covered parking is detached, keeping exhaust fumes out of the EPA Indoor airPLUS certified home.
Covered entryways, screened porches, and three-foot overhangs protect windows, walls, and visitors from heavy rains and summer sun.
ENERGY STAR appliances, WaterSense plumbing fixtures, and LED lighting add to energy and water savings.
Three ductless mini-split heat pumps provide efficient heating and cooling for the entire home.
The advance-framed 2-by-6 walls have open headers providing more space for insulation.
The coated OSB sheathing has an adhered layer of R-3 rigid insulation to provide thermal, air, and water protection in one installed layer.
The coated wall sheathing is taped at the seams and around windows and piping to provide a continuous drainage plane under the fiber cement siding.
The advance-framed walls are filled with blown fiberglass that completely fills the wall cavities.
A mesh plastic rainscreen product separates the coated OSB from the siding, providing a drainage and ventilation gap.
“Hot water distribution works well -- no more than 20 seconds for hot water to arrive at any fixture in the house without pumps.”
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“Hot water distribution works well -- no more than 20 seconds for hot water to arrive at any fixture in the house without pumps. We are currently using [the ERV] continuously to circulate air around the house with 20 min./hour of outside air introduced. This has helped maintain indoor humidity when outdoor RH is lower.”