Roof Valley Leaking

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

Roof valley leaking.

They are common on both hip and gable roofs. Most roofers that do shingles will use a heavy base paper instead of a rubber membrane. Some roof leaks are tough to locate. Most shingle installers will use a thick 30 lb paper as a base for the valley.

Valley areas are prone to leak due to the lack of using proper materials. And you can tar it but it s a real stop gap band aid like measure. Most roofers that install shingles will not have rubber membranes with them to do such areas. Often water runs to openings in the vapor barrier such as at ceiling light fixtures.

A roof valley is very prone to leaks especially if you have an older roof. 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. Roof valley leaks roof valleys are created wherever two roof surfaces intersect to form a shallow v shape. 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.

And damaged flashing is behind most roof leaks. Roof valleys carry a lot of water. In either situation the leaking roof valley can be fixed by removing affected shingles and structural elements and upgrading your roof s flashing. 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.

Valleys can be especially troublesome because they carry a lot of water during heavy rain. Although professional roofers take great care to properly install roof valleys they can be susceptible to roof leaks. Sometimes the water shows up at a ceiling spot distant from the leak.