Repairing Valley Leaks In Roofs

Look for cracks in the base of flexible rubber flashing or broken seams in metal varieties of vent pipe flashing.

Repairing valley leaks in roofs.

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. Follow these three preparatory steps to get ready to fix the valley leak. Sometimes an older home s roof is more prone to leaking in the roof valleys because of old repairs. Here are two before and after photos of a valley with newly laid cement.

That means replacing or repairing existing flashing instead of using any type of sealant as a leak stopper. There are occasions when a roof valley is in good condition but the cement holding the tiles in place has washed out or crumbled. If your roof valley leak is an old repair gone bad consider having a professional repair the leak properly. The rubber gasket that surrounds the vent pipe could be rotted.

Repairing a roof valley involves removing some shingles and installing a. 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. Clear any debris in the roof valley and surrounding area. Take measurements of your roof flashing most flashing is 14 inches wide but yours may vary.

In order to lay the flashing the shingles on the roof will have to be removed. And you can tar it but it s a real stop gap band aid like measure. Check plumbing vent boots and roof vents if water is entering from that area to cause the leaking roof. You should always attempt a mechanical leaky roof fix whenever possible.

Rarely will caulk or roof cement cure a leaky roof at least for very long. Only use caulk for very small holes and when flashing isn t an option as a leak stopper. In other cases shingles are overlapped to make a valley and water from harsh rains can find a way under the shingles. Repairing a metal roof seam with turbo poly seal is simple and it is a do it yourself p.

The right thing to do here is to pull a valley basically pull a valley apart and rebuild it. In these circumstances it may be possible to just leave the existing valley base in place and replace only the cement.