How To Valley A Roof

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.

How to valley a roof.

Lay one and two tab shingles as you near the valley so full size shingles will run across the valley. Water collects in a valley to flow off the roof. To understand the concept and how all the pieces are laid out and cut i picture the roof two dimensionally in plan view. Your choice of valley installation method is critical because when improperly installed valleys are risks for serious leaks.

This roof valley is a perfect example. Soup to nuts riley shows the proper way of installing a valley on a roof. To get started i need to know only two things. Roof one side of the valley running the shingles across it.

Valleys are a prime leak area so it s important to be careful. Soup to nuts riley shows the proper way of installing a valley on a roof. Gaf mastering the roof chapter 12 this video demonstrates the proper installation technique for installing roofing valleys. 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.

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. Shingle the other side of the valley the same way.

The open woven and closed cut methods are demonstrated. 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. 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. Stop nailing 6 inches from the center.

Essentially there are three main ways to shingle a roof valley.