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How to Properly Install [Shingle] Roofing Valleys (Español) | Mastering the Roof by GAF
GAF- Mastering The Roof (chapter 12) This video demonstrates the proper installation technique for installing roofing valleys; the open, woven, and closed cut methods are demonstrated. Valleys are a prime leak area, so it's important to be careful. GAF-Hágase un experto en techos (capítulo 12)