Repairing A Leaking Roof Valley

Using different metal to patch valley will cause corrosion.

Repairing a leaking roof valley.

Clear any debris in the roof valley and surrounding area. A properly flashed roof valley should have an ice and water shield installed with roofing felt being properly secured over the ice and water. Start low soaking the area just above where the leak appears in the house. The right thing to do here is to pull a valley basically pull a valley apart and rebuild it.

Take measurements of your roof flashing most flashing is 14 inches wide but yours may vary. And you can tar it but it s a real stop gap band aid like measure. Inspect valley for holes all along joint. Move to the highest end of the valley and work your way down cleaning.

Isolate areas when you run the hose. 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. Most valleys use either aluminum or copper. 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.

You can patch small holes with the same type of sheet metal valley is made of. 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. Follow these three preparatory steps to get ready to fix the valley leak. These instructions should now allow you to repair a leaking roof valley on a roof with woven shingles.

Clean surface of valley with wire brush. Replace cracked broken or rotted shingles with the new ones you purchased. This repair process is also the same for composition and tile roofs. T o repair an open 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.