Open Valley Roof Installation

Recommended procedures of basic valley flashing installation.

Open valley roof installation.

Ensure ice and water protector has been installed along the valley first. First clean the debris out of the valley including sawdust nails and whatever else is in there. Open valley shingle installation makes use of the metal flashing sheets that need to be installed so that they overlap each other by few inches with the upper piece of sheet is resting over the bottom piece. Then starting at the base of the.

Then install a non corrosive metal valley flashing of 24 minimum width lap successive sheets of metal flashing a minimum of 12 inches and seal laps. Only nail at the edges with only enough nails to. When compared to a closed valley and open valley adds an additional layer of lining. The open woven and closed cut methods are demonstrated.

Others start with a 3 inch wide. No one of this affirmat. Shingles are cut on the higher slope in a straight line through the valley. Fold the top over the roof ridge and cut the bottom along the drip edge metal.

With a clean valley you can lay down some peel and stick roofing membrane. How to do it determine cuts. Install synthetic roofing. Some roofers cut the shingles parallel to the flashing s center ridge.

Install an underlayment centered in the roof valley. This allows water to fall from the higher slope to the lower slope and prevents it from going under the shingles to the roof deck. During its installation process the open valley shingle utilizes the w metal flashing which helps in preventing the water from rushing down. In this video i show you how i do the valleys on a shingle roof.

Pros of open valley shingle installation. Snipping off the corners of. This video demonstrates the proper installation technique for installing roofing valleys.