Perkins Roofing · YouTube Short
Roof Penetrations in Valleys: Leak Risks
Why a roof penetration in the middle of a valley is asking for trouble, especially on a metal roof: valleys are there to move water, and every boot or poorly detailed vent placed in one adds another place for a leak to start.
Discuss openings where water is meant to flow
This short calls attention to the position of vents and other penetrations within a roof valley. It gives you a focused question for an inspection or reroof proposal: how are these openings accounted for in the drainage and flashing details? Ask the contractor to explain the existing condition and proposed work, rather than assuming a new covering alone addresses it. Do not climb onto a roof to check a detail seen in the video; use an inspection and the contractor’s photographs to discuss your property.
Questions for your project
- Are any existing penetrations located in a valley?
- How does the proposed scope address those openings?
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A short educational video, not an inspection or a recommendation for your property.