Valley Of Roof Leaking

Take measurements of your roof flashing most flashing is 14 inches wide but yours may vary.

Valley of roof leaking.

Most shingle installers will use a thick 30 lb paper as a base for the valley. 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. The resulting cut is very similar to the angle you might see on the tip of a wood chisel. Most roofers that do shingles will use a heavy base paper instead of a rubber membrane.

Follow these three preparatory steps to get ready to fix the valley leak. The most common cause of a roof leak where metal flashings are used is shingles that have been improperly cut. When a shingle from either roof intersects and passes over the metal valley flashing it needs to be cut at an angle. If that water doesn t shed off the roof fast enough or gets under the roofing material roof leaks will soon develop.

Valley areas are prone to leak due to the lack of using proper materials. 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. Because roof valleys function as a drain on the roof they receive as disproportionate volume of water every time it rains. Move to the highest end of the valley and work your way down cleaning.

A roof valley is very prone to leaks especially if you have an older roof. Clear any debris in the roof valley and surrounding area. How to fix roof valley leaks remove debris remove all debris from roof valleys so nothing is touching your roof re shingle roof valleys install ice and water shield under shingles or install metal roof flashing and re shingle the valley.