Context
The clients wanted a Passive House, that they knew. They purchased a wooded, 2.8-acre lot with an old stone wall, remnants of a farmstead. Clearly somebody knew what they were doing with this land once. However energy efficiency then wasn’t what it is now. We’d need to gather the sun in from a direction almost 90 degrees off of the primary drainage slope, and provide a new entrance to the house that afforded privacy to the owners. They were looking for something that connected them directly with the outdoors – where they and their dog Vader spend much of their time regardless of season – and that echoed the traditional forms of the region yet lived like a state-of-the-art, net zero energy home.
Response
We created a fossil-fuel free structure, simple and classic in form, with a detached, barn-like garage and connecting breezeway. Approaching from the back end of the property, the house emerges solid and modest. On the farmhouse porch, sunlight filters through a trellised cutout on the roof to dance across a massive boulder that sits beneath it. Harvested from the site and rolled into place, the monolith pays homage to the old stone wall it once served as a cornerstone for.
Spark Side’s glassy entryway provides a hint of the modern interior beyond, where oversized, high-performance windows flood the double-height kitchen, dining, and living spaces with light and passive heat. In similar fashion to the slatted exterior breezeway, the open staircase offers a glimpse through the residence, past the kitchen and living room to the full-width screen porch at the rear of the home.
We conducted a Biophilic Charette with the owners to capture and recreate their favorite moments spent outdoors. As avid adventurers, they were immediately drawn to the idea of incorporating “risk and peril” in the design. We were able to evoke a sense of precariousness with a cantilevered loft extension on the second floor. Supported by just 2.5 inches of specially laminated structural wood, the loft jets into the double-height living and dining room with structural tenuity, evoking a bit of the same rush felt when standing on a cliff’s edge and peering down. A large window inside the second-floor primary suite overlooks the dining room, accentuating the vibe.
The home’s south-facing elevation is as open as the north-facing side is protected, with most of the windows concentrated on the facade where they will work the best. The high-performance, large-paned glass brings in practically all of the heat needed even in winter, and 12-inch thick, super-insulated walls, floor, and roof make sure the warmth stays in. Efficient air source heat pumps heat and cool the interior as needed, while an energy recovery ventilator circulates fresh air.
Spark Side requires 90% less energy to heat and cool than a a code-built home of the same size, and is achieving Net Zero Energy on an annual basis with help from a 12.4KW photovoltaic array.
