Roof Valley Leaking

And you can tar it but it s a real stop gap band aid like measure.

Roof valley leaking. And damaged flashing is behind most roof leaks. Many roof valley leaks are caused by roofing nails that have been poorly placed and are acting as a dripper feeding water through from the roof above. If your ceiling has a plastic vapor barrier between the drywall and the attic insulation push the insulation aside and look for flow stains on the plastic. They are common on both hip and gable roofs.

Sometimes the water shows up at a ceiling spot distant from the leak. Some roof leaks are tough to locate. Roof valley leaks valleys in your roof are locations where two roof planes intersect and form a v shaped valley that runs down a slope of your roof. In either situation the leaking roof valley can be fixed by removing affected shingles and structural elements and upgrading your roof s flashing.

Roof valleys carry a lot of water. Roof valley leaks roof valleys are created wherever two roof surfaces intersect to form a shallow v shape. A flashing is a transitional roofing material that connects the roof material to some other building material or to another part of the roof. Valley areas are prone to leak due to the lack of using proper materials.

The right thing to do here is to pull a valley basically pull a valley apart and rebuild it. Most shingle installers will use a thick 30 lb paper as a base for the valley. Often water runs to openings in the vapor barrier such as at ceiling light fixtures. The reason why the roof valley is such a sensitive area has to do with all the rainwater and or melting snow that accumulates and flows through the valley on its way into the gutters.

Most roofers that install shingles will not have rubber membranes with them to do such areas. Most roofers that do shingles will use a heavy base paper instead of a rubber membrane. 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.