Fix Roof Valley Leak

The right thing to do here is to pull a valley basically pull a valley apart and rebuild it.

Fix roof valley leak.

And you can tar it but it s a real stop gap band aid like measure. A flashing is a transitional roofing material that connects the roof material to some other building material or to another part of the roof. For example soak the downhill side of a chimney first then each side then the top on both sides. Roof valleys carry a lot of water.

Start low soaking the area just above where the leak appears in the house. Roof valleys are created wherever two roof surfaces intersect to form a shallow v shape. Repairing a metal roof seam with turbo poly seal is simple and it is a do it yourself p. Roof valley repairs there are occasions when a roof valley is in good condition but the cement holding the tiles in place has washed out or crumbled.

And that s what we ve done here montgomery s old cloverdale neighborhood. We removed all old roofing material down to the original wood deck. In these circumstances it may be possible to just leave the existing valley base in place and replace only the cement. If your roof valley leak is an old repair gone bad consider having a professional repair the leak properly.

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. Although professional roofers take great care to properly install roof valleys they can be susceptible to roof leaks. And damaged flashing is behind most roof leaks. 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.

The best way to find and stop the roof leak is to start over and roof the valley the right way. If a leak is difficult to find enlist a helper and go up on the roof with a garden hose. Then installed a layer of gaf storm guard underlayment and 20 valley flashing. In order to lay the flashing the shingles on the roof will have to be removed.