How To Replace A Valley On A Roof

Shingle the other side of the valley the same way.

How to replace a valley on a roof. A full valley replacement involves removing all the cemented tiles underfelt and some timber to the section. Stop nailing 6 inches from the center. This video shows the full repair from removing leaded va. 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.

If the roof valley itself needs to be ripped out and replaced then this will involve significantly more work and cost. Repairing a roof valley involves removing some shingles and installing a sheet metal flashing from top to bottom in the valley. Step 2 remove the shingles. Clear any debris in the roof valley and surrounding area.

Lay one and two tab shingles as you near the valley so full size shingles will run across the valley. 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. A roof valley is very prone to leaks especially if you have an older roof. 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.

Snap a chalkline 2 to 3 inches past the valley center on the top layer of shingles. Tessaro also says that the open method allows for faster replacement and repair than the other techniques of shingling a roof valley. Roof one side of the valley running the shingles across it. If you have a roof leak it may well be through the 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. Take measurements of your roof flashing most flashing is 14 inches wide but yours may vary. Follow these three preparatory steps to get ready to fix the valley leak. For a do it yourself homeowner the job is easier with the help of.

In order to lay the flashing the shingles on the roof will have to be removed.