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Definition of Open valley
1. Noun. (roofing) a method of valley construction in which the steep-slope roofing on both sides are trimmed along each side of the valley, exposing the metal valley flashing. ¹
¹ Source: wiktionary.com
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1. Noun. (roofing) a method of valley construction in which the steep-slope roofing on both sides are trimmed along each side of the valley, exposing the metal valley flashing. ¹
¹ Source: wiktionary.com