How To Valley A Roof

To understand the concept and how all the pieces are laid out and cut i picture the roof two dimensionally in plan view.

How to valley a roof.

A properly flashed roof valley should have an ice and water shield installed with roofing felt being properly secured over the ice and water. To shingle out of the valley with laminated shingles lay a shingle down as a gauge and mark the corner at the bottom left and top right of the roof. Then i use a construction calculator to find the correct length of each rafter. Shingle the other side of the valley the same way.

Lay one and two tab shingles as you near the valley so full size shingles will run across the valley. The open woven and closed cut methods are demonstrated. A roof valley is formed where two roof slopes meet. Gaf mastering the roof chapter 12 this video demonstrates the proper installation technique for installing roofing valleys.

Roof one side of the valley running the shingles across it. Soup to nuts riley shows the proper way of installing a valley on a roof. Water collects in a valley to flow off the roof. Woven closed cut and open.

Your choice of valley installation method is critical because when improperly installed valleys are risks for serious leaks. I then move the shingle to the uppermost course on the roof plane line up the mark on the shingle with the valley center and again mark the corner. To get started i need to know only two things. Soup to nuts riley shows the proper way of installing a valley on a roof.

The first is the pitch of the roof. Essentially there are three main ways to shingle a roof valley. Valleys are a prime leak area so it s important to be careful. Roof installation how to shingle a valley hd by roofrepair101 more about roofing at.

If the ice and water shield is missing then you will have to remove the shingles on both sides along the valley put ice and water shield in place and re shingle the roof.