Collection by Anthony Hain
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The ADU’s cladding is stainless steel, making it resilient in all types of weather. “The D.C. metro area has four distinct seasons—it rains a lot, snows a lot, and it gets hot in the summer—so we wanted to create a unit that was adaptable and sustainable,” says David Lee, founder and CEO of prefab design company Aroom. The exterior of the main house contrasts the steel with its brick and light-blue siding, but the Yeons loved the idea of a refreshing and modern look for the backyard unit.
The central stair connects the entry foyer and the upstairs living space. From the landing, there are views out to the surrounding forest. The interior is clad in Ready Pine, a type of prefinished tongue-and-groove panel. “This was one of the biggest expenses,” says architect Tom Knezic. “But, it was worth it as drywall will start to flake when it freezes in the winter, and it meant we didn't have the hassle of carrying large sheets of drywall up the cliff. It will also last for generations.” The timber casings around the doors and windows were custom stained to match the finish of the Ready Pine.














