Remove debris remove all debris from roof valleys so nothing is touching your roof.
How to fix leaky roof valley.
And you can tar it but it s a real stop gap band aid like measure.
This will require that you remove the shingles.
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.
Follow these three preparatory steps to get ready to fix the valley leak.
A lead valley is a particularly difficult item to dispose of as lead is toxic and so a repair may involve simply patching up your lead roofing.
The right thing to do here is to pull a valley basically pull a valley apart and rebuild it.
Using different metal to patch valley will cause corrosion.
Patch the nail or screw holes by slipping a piece of roof flashing underneath the shingle.
How to fix roof valley leaks.
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.
Inspect valley for holes all along joint.
This video shows the traditional and best way to repair a lead valley on a roof.
Re shingle roof valleys install ice and water shield under shingles or install metal roof flashing and re shingle the valley.
A properly flashed roof valley should have an ice and water shield installed with roofing felt being properly secured over the ice and water.
If you find that this is a problem then you will need to repair your roof valley before anything serious happens such as plaster loss or even major water damage.
Take measurements of your roof flashing most flashing is 14 inches wide but yours may vary.
Make a neat pile of the shingles that you will be able to continue using.
Move to the highest end of the valley and work your way down cleaning.
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.
Small nail holes left behind from old vents satellite dish brackets or anything previously attached to the roof can allow water to enter and cause damage for years before leaking is noticed.
Most valleys use either aluminum or copper.