How To Sheet A Roof Valley

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

How to sheet a roof valley. And either an organic or modified underlayment depending on whether tiles or shingles are being installed. Iko recommends that you install architectural shingles with the open valley method for the best roof performance. It worked ok but it wasn t perfect. This recommendation includes iko s premium shingles.

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. When deciding how to shingle a roof valley you will need to consider your materials the climate and the desired look of the roof. Stop nailing 6 inches from the center. In this video we ll flash the valley.

I ve got this 7 12 roof to work with and going into the valley i measured the long and short points. First clean the debris out of the valley including sawdust nails and whatever else is in there. Snap a chalkline 2 to 3 inches past the valley center on the top layer of shingles. Shingle the other side of the valley the same way.

Roof one side of the valley running the shingles across it. A roof valley is very prone to leaks especially if you have an older roof. The three methods to shingle a roof valley. 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.

A roof using the open valley style involves placing a v or w shaped piece of metal usually galvanized or sometimes copper in the seam of the valley and then covered with a base sheet such as 30lb.