How To Sheet A Roof Valley

Roof one side of the valley running the shingles across it.

How to sheet a roof valley.

When deciding how to shingle a roof valley you will need to consider your materials the climate and the desired look of the roof. 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. Lay one and two tab shingles as you near the valley so full size shingles will run across the valley.

In a previous video we covered how to flash roof edges before shingling. 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. Shingle the other side of the valley the same way.

First clean the debris out of the valley including sawdust nails and whatever else is in there. A roof valley is very prone to leaks especially if you have an older roof. Roof valleys are like gutters with a steep pitch but the stakes are higher for valleys than they are for gutters. In this video we ll flash the valley.

And either an organic or modified underlayment depending on whether tiles or shingles are being installed. I ve got this 7 12 roof to work with and going into the valley i measured the long and short points. Stop nailing 6 inches from the center. Iko recommends that you install architectural shingles with the open valley method for the best roof performance.

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.