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.
Fixing leaking roof valley.
Roof valleys are prone to leaking and are a well known weak spot on older roofs.
The sealants and roof pitch used can crack and chip away over time.
Find them locally at hardware stores or home centers improved attic insulation and ventilation are usually the best ways to prevent ice dams.
How much it costs to repair or replace a roof valley will depend on what it s made from.
Although professional roofers take great care to properly install roof valleys they can be susceptible to roof leaks.
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.
Sometimes an older home s roof is more prone to leaking in the roof valleys because of old repairs.
The valley flashing laid over the joint where the two roofs meet should overlap the step flashing at least 2 in.
In other cases water can become trapped under shingles which have been overlaid to create the valley trough.
If leaks continue to occur from ice dams consider installing roof edge heating cables.
If you have a roof valley in your home then you may find that your lead valley starts to leak or even to allow water to run onto the ceiling of the floor below.
If your roof valley leak is an old repair gone bad consider having a professional repair the leak properly.
This video shows the traditional and best way to repair a lead valley on a roof.
If you re not sure what a roof valley looks like check out the photos on this page.
This method of lead valley repair is proven to not only be fast and safe wit.