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