Fix A Leaking Roof Valley

This video shows the traditional and best way to repair a lead valley on a roof.

Fix a leaking roof valley.

If you re not sure what a roof valley looks like check out the photos on this page. How much it costs to repair or replace a roof valley will depend on what it s made from. Roof valleys are created wherever two roof surfaces intersect to form a shallow v shape. The valley flashing laid over the joint where the two roofs meet should overlap the step flashing at least 2 in.

Roof valleys if not installed correctly are one of the most leak prone areas on the roof. 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. In other cases water can become trapped under shingles which have been overlaid to create the valley trough. 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.

Step 2 remove the shingles. Although professional roofers take great care to properly install roof valleys they can be susceptible to roof leaks. This project identifies some of the causes of leaking roofs including damage to ridge tile mortar damage to verge tile mortar damage to lead flashing around the chimney stack and how damage can occur in a roof valley. If that water doesn t shed off the roof fast enough or gets.

Find them locally at hardware stores or home centers improved attic insulation and ventilation are usually the best ways to prevent ice dams. Leaking roof identifying the cause of a leaking roof and how to repair storm damage to roofs. How to identify a leaking roof and fix it. Check the entire roof valley carefully to locate the source of these problems.

If your roof valley leak is an old repair gone bad consider having a professional repair the leak properly. 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. In order to lay the flashing the shingles on the roof will have to be removed.

The sealants and roof pitch used can crack and chip away over time. Because roof valleys function as a drain on the roof they receive as disproportionate volume of water every time it rains. Just like in nature a valley on a roof is designed to collect water. Sometimes an older home s roof is more prone to leaking in the roof valleys because of old repairs.