How To Valley A Roof

Valleys are a prime leak area so it s important to be careful.

How to valley a roof.

The first is the pitch of the roof. Water collects in a valley to flow off the roof. This roof valley is a perfect example. Your choice of valley installation method is critical because when improperly installed valleys are risks for serious leaks.

Stop nailing 6 inches from the center. Essentially there are three main ways to shingle a roof valley. To understand the concept and how all the pieces are laid out and cut i picture the roof two dimensionally in plan view. For a closed valley the roofer will install the shingles onto the roof deck and extend the asphalt shingles through the area where opposing roof planes meet so that the shingles cover or close the valley area.

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. Roof one side of the valley running the shingles across it. Roof installation how to shingle a valley hd by roofrepair101 more about roofing at. Shingle the other side of the valley the same way.

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. Soup to nuts riley shows the proper way of installing a valley on a roof. The open woven and closed cut methods are demonstrated. To get started i need to know only two things.

Woven closed cut and open. A roof valley is formed where two roof slopes meet. Then i use a construction calculator to find the correct length of each rafter. Lay one and two tab shingles as you near the valley so full size shingles will run across the valley.

Gaf mastering the roof chapter 12 this video demonstrates the proper installation technique for installing roofing valleys.