Failed Roof Flashing: One of the Most Common Places Roofs Leak
Shingles shed water on open slopes. Flashing handles the places where a slope ends or something pokes through it. It is the thin metal, usually steel or aluminum, that lines the edges of chimneys, skylights, walls, valleys, and vents. When flashing fails, water gets behind the shingles at exactly the spots that take the most
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