Repairing A Leaking Roof Valley

Move to the highest end of the valley and work your way down cleaning.

Repairing a leaking roof 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 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. For example soak the downhill side of a chimney first then each side then the top on both sides. If a leak is difficult to find enlist a helper and go up on the roof with a garden hose.

Isolate areas when you run the hose. 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. Use two roofing nails per shingle. 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.

Inspect valley for holes all along joint. Follow these three preparatory steps to get ready to fix the valley leak. Clean surface of valley with wire brush. These instructions should now allow you to repair a leaking roof valley on a roof with woven shingles.

Start low soaking the area just above where the leak appears in the house. And you can tar it but it s a real stop gap band aid like measure. Using different metal to patch valley will cause corrosion. 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.

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. T o repair an open valley. Replace cracked broken or rotted shingles with the new ones you purchased.

Most valleys use either aluminum or copper.