How To Replace Roof Valley

A full valley replacement involves removing all the cemented tiles underfelt and some timber to the section.

How to replace roof valley. Begin by placing the replacement piece of flashing in the valley lining up the groove in the center with the middle of the valley. This video shows the traditional and best way to repair a lead valley on a roof. Roof one side of the valley running the shingles across it. How to repair valleys on a roof.

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. Stop nailing 6 inches from the center. Repair damaged roof valley. Shingle the other side of the valley the same way.

In order to lay the flashing the shingles on the roof will have to be removed. Step 2 remove the shingles. Make sure the flashing s bottom edge is perfectly aligned with your roof s lower edge. Lay one and two tab shingles as you near the valley so full size shingles will run across the valley.

This video shows the full repair from removing leaded va. Tessaro also says that the open method allows for faster replacement and repair than the other techniques of shingling a roof valley. As another benefit to the roofing professional open valleys are sometimes used to easily bridge the gap between roof faces of vastly different pitches. Valley flashing comes in standard.

If the roof valley itself needs to be ripped out and replaced then this will involve significantly more work and cost. 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. Roof valleys are troughs that discard runoff water where two sections of sloped roof meet. Assuming a typical size roof valley of up to 3 metres in length standard roof tiles and no access problems than it will usually take around half a day to replace the cement and simply re bed the existing valley into place but if you need the complete valley replaced then it will take a full day to complete the job.

This is where two parts of the roof join. If you have a roof leak it may well be through the valley. Here s how to install new flashing in your roof valleys. Snap a chalkline 2 to 3 inches past the valley center on the top layer of shingles.

Check the entire roof valley carefully to locate the source of these problems.