How To Valley A Roof

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.

How to valley a 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. Soup to nuts riley shows the proper way of installing a valley on a roof. 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. This roof valley is a perfect example.

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. 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. A properly flashed roof valley should have an ice and water shield installed with roofing felt being properly secured over the ice and water.

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. A roof valley is formed where two roof slopes meet. The first is the pitch of the roof.

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. Essentially there are three main ways to shingle a roof valley. 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. The open woven and closed cut methods are demonstrated. Then i use a construction calculator to find the correct length of each rafter. Woven closed cut and open.

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