Remove debris remove all debris from roof valleys so nothing is touching your roof.
Fixing leaking roof valley.
Inspect valley for holes all along joint.
T o repair an open valley.
And you can tar it but it s a real stop gap band aid like measure.
The valley flashing laid over the joint where the two roofs meet should overlap the step flashing at least 2 in.
Move to the highest end of the valley and work your way down cleaning.
Sometimes an older home s roof is more prone to leaking in the roof valleys because of old repairs.
Clear any debris in the roof valley and surrounding area.
You can patch small holes with the same type of sheet metal valley is made of.
Take measurements of your roof flashing most flashing is 14 inches wide but yours may vary.
Clean surface of valley with wire brush.
Find them locally at hardware stores or home centers.
Removal of debris collecting in the valleys and gutters will allow water to quickly drain away and protect shingles and flashing.
The right thing to do here is to pull a valley basically pull a valley apart and rebuild it.
In order to lay the flashing the shingles on the roof will have to be removed.
Follow these three preparatory steps to get ready to fix the valley leak.
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.
Re shingle roof valleys install ice and water shield under shingles or install metal roof flashing and re shingle the valley.
How to fix roof valley leaks.
Using different metal to patch valley will cause corrosion.
The sealants and roof pitch used can crack and chip away over time.