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.

How to valley a roof.

Shingle the other side of the valley the same way. Water collects in a valley to flow off the roof. Lay one and two tab shingles as you near the valley so full size shingles will run across the valley. 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.

Woven closed cut and open. 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 get started i need to know only two things. Roof one side of the valley running the shingles across it.

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. This roof valley is a perfect example. To understand the concept and how all the pieces are laid out and cut i picture the roof two dimensionally in plan view. The first is the pitch of the roof.

Soup to nuts riley shows the proper way of installing a valley on a roof. Soup to nuts riley shows the proper way of installing a valley on a roof. Roof installation how to shingle a valley hd by roofrepair101 more about roofing at. Stop nailing 6 inches from the center.

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. Then i use a construction calculator to find the correct length of each rafter. A roof valley is formed where two roof slopes meet. The open woven and closed cut methods are demonstrated.

Your choice of valley installation method is critical because when improperly installed valleys are risks for serious leaks.