How To Cut A Metal Roof Valley

When to choose a closed valley over an open valley.

How to cut a metal roof valley.

Fold the top over the roof ridge and cut the bottom along the drip edge metal. Best practices for sealing the metal roof valley vary based on the slope of the roof. Low slope roofs slope less than 3 12 use tape sealant between the valley trim and the panel. Masterrib is a 36 wide 5 r.

The shingles are then cut out of the valley area opening the surface of the valley lining to water run off and the environment. Roofing shingles are installed then cut and sealed where they overlap the metal channel. For an open valley a sheet of metal usually steel sometimes copper is fastened to the roof deck. How to seal metal roof valley.

Ultimately laying any shingle in a valley can restrict proper water and debris flow unlike the metal flashing used in an open valley. The metal is usually pre painted to best complement the shingles color blend. Cut the panels from the ground instead of on the roof to avoid damaging the roof with the debris. One variant of the closed cut valley is the california valley also called long island valley and new jersey valley.

With an open valley a strip of metal will be visible on the roof wherever two opposing roof planes meet. With a clean valley you can lay down some peel and stick roofing membrane. Just simple 3d animated digital instructions on how to install a valley on a masterrib panel roof. Install synthetic roofing underlayment or felt paper according to manufacturer specifications and then install the first piece of valley flashing.