How To Repair A Leaky Roof Valley

Roof valleys are channels designed to drain runoff water and like any other part of your roof they can degrade over time with exposure to the elements.

How to repair a leaky roof valley.

T o repair an open valley. Using different metal to patch valley will cause corrosion. If your roof valley leak is an old repair gone bad consider having a professional repair the leak properly. The sealants and roof pitch used can crack and chip away over time.

You can patch small holes with the same type of sheet metal valley is made of. Most valleys use either aluminum or copper. Clean surface of valley with wire brush. Find them locally at hardware stores or home centers improved attic insulation and ventilation are usually the best ways to prevent ice dams.

The valley flashing laid over the joint where the two roofs meet should overlap the step flashing at least 2 in. And the valleys are leaking real bad and i wondered if there s some way to repair that without having to tear the whole roof off again. In order to lay the flashing the shingles on the roof will have to be removed. Step 2 remove the shingles.

Though roof valleys are com mon leak sites on shingle roofs it s typically fairly easy to fix these problems with a little know how. This video shows the traditional and best way to repair a lead valley on a roof. Check the entire roof valley carefully to locate the source of these problems. In other cases water can become trapped under shingles which have been overlaid to create the valley trough.

Sometimes an older home s roof is more prone to leaking in the roof valleys because of old repairs. If leaks continue to occur from ice dams consider installing roof edge heating cables. Once the roof valley has begun to leak you will need to cover the valley with flashing in order to prevent a repeat of the problem.