How To Replace A Valley On A Roof

Lay one and two tab shingles as you near the valley so full size shingles will run across the valley.

How to replace a valley on a roof.

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. 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. This is where two parts of the roof join. If you have a roof leak it may well be through the valley.

Follow these three preparatory steps to get ready to fix the valley leak. Take measurements of your roof flashing most flashing is 14 inches wide but yours may vary. Snap a chalkline 2 to 3 inches past the valley center on the top layer of shingles. In order to lay the flashing the shingles on the roof will have to be removed.

Roof one side of the valley running the shingles across it. If the roof valley itself needs to be ripped out and replaced then this will involve significantly more work and cost. Check the entire roof valley carefully to locate the source of these problems. 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.

This video shows the full repair from removing leaded va. Repairing a roof valley involves removing some shingles and installing a sheet metal flashing from top to bottom in the valley. 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.

A roof valley is very prone to leaks especially if you have an older roof. Repair a shingle roof valley leak in 6 easy steps prepare for the repair. Step 2 remove the shingles. Stop nailing 6 inches from the center.

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