How To Sheet A Roof Valley

In a previous video we covered how to flash roof edges before shingling.

How to sheet a roof valley.

A roof valley is very prone to leaks especially if you have an older roof. Shingle the other side of the valley the same way. I ve got this 7 12 roof to work with and going into the valley i measured the long and short points. Lay one and two tab shingles as you near the valley so full size shingles will run across the valley.

Snap a chalkline 2 to 3 inches past the valley center on the top layer of shingles. The three methods to shingle a roof valley. It worked ok but it wasn t perfect. Roof one side of the valley running the shingles across it.

Roof valleys are like gutters with a steep pitch but the stakes are higher for valleys than they are for gutters. Stop nailing 6 inches from the center. 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. In this video we ll flash the valley.

Iko recommends that you install architectural shingles with the open valley method for the best roof performance. It s been an awfully long time since i ve been on a roof nevermind framing one and i m looking to improve a little in how i approach cutting sheathing. First clean the debris out of the valley including sawdust nails and whatever else is in there. And either an organic or modified underlayment depending on whether tiles or shingles are being installed.

When deciding how to shingle a roof valley you will need to consider your materials the climate and the desired look of the roof.