The Ecoshel Smart-Shingle System is designed to simplify cedar-shingle jobs. The shingles — suitable for roofing or walls — are squared and fastened to each other in 45-inch-long panels, then coded to ensure that joints are offset by at least 1 1/2 inches. Ridges on the shingles’ backs create a drainage plain. Cost per square ranges from $240 to $470, depending on wood quality and coverage.

Ecoshel, 404/350-0540,

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