Leaking roof valleys and how to fix them.
Fix leaking roof valley.
If the ice and water shield is missing then you will have to remove the shingles on both sides along the valley put ice and water shield in place and re shingle the roof.
In order to lay the flashing the shingles on the roof will have to be removed.
The right thing to do here is to pull a valley basically pull a valley apart and rebuild it.
Start low soaking the area just above where the leak appears in the house.
Roof valleys if not installed correctly are one of the most leak prone areas on the roof.
If that water doesn.
And damaged flashing is behind most roof leaks.
A flashing is a transitional roofing material that connects the roof material to some other building material or to another part of the roof.
A properly flashed roof valley should have an ice and water shield installed with roofing felt being properly secured over the ice and water.
And if they put a second layer of shingles on they brought it up the valley but they didn t replace the valley it s probably leaking and cracking and split.
In either situation the leaking roof valley can be fixed by removing affected shingles and structural elements and upgrading your roof s flashing.
If a leak is difficult to find enlist a helper and go up on the roof with a garden hose.
For example soak the downhill side of a chimney first then each side then the top on both sides.
Because roof valleys function as a drain on the roof they receive as disproportionate volume of water every time it rains.
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.
Just like in nature a valley on a roof is designed to collect water.