The type of drip edge you purchase depends on your roofing material and the shape of the roof. While drip edge might seem like a simple piece of construction material, it comes in many different varieties. Thus, proper placement of drip edge is critical. When the sheathing swells, this causes cracks and fractures in the roofing felt and shingles.Ĭracked shingles result in extensive leaks throughout the interior of the shed. Putting drip edge over or under the roofing felt in the wrong spots can cause the OSB sheathing to swell with moisture. Driving rain will then be able to enter the eaves of the shed, causing drips and run-off in the interior wall area. However, there are tons of ways to mess up a drip edge installation.įor instance, nailing drip edge too close to your shed will still allow drips down the fascia board. Shed roof drip edge is essential in keeping your structure watertight. This keeps the fascia board, roof, and foundation dry. The small jut allows the water to drip off the shed without hitting the structure. Since the other end is nailed to the OSB underneath the roof felt, water that beads off the shingles drips onto the drip edge. This edge goes against the shed roof flashing, with the jut facing outward. The lip of one side of the L angles outward. What is drip edge and how does it work? Drip edge is typically a ten-foot piece of steel, aluminum, or vinyl that is bent in an L-shape.
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