Ecoshel’s Smart-Shingle System Panels take most of the guesswork from installing western red cedar sidewall or roof shingles, while providing a built-in rainscreen. Guides printed on the panel fronts insure that shingle joints are offset from those on the two courses below. On the panel backs, thick vertical beads of hot-melt glue hold the panels off the courses underneath, allowing water to drain and the shingles to dry from both sides. Made in Maine from Premium #1 grade, vertical-grain western red cedar, the panels cost about $400 a square.

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