Metal Roofing Valley Cut

Roofing shingles are installed then cut and sealed where they overlap the metal channel.

Metal roofing valley cut.

Ultimately laying any shingle in a valley can restrict proper water and debris flow unlike the metal flashing used in an open valley. A chalk line is then used to strike a line from the top of the valley to the bottom of the valley. A contractor can minimize the appearance of edge creep by using lap flashing hemming exposed edges when possible or using a paint pen on visible cut edges. Fold the top over the roof ridge and cut the bottom along the drip edge metal.

With an open valley a strip of metal will be visible on the roof wherever two opposing roof planes meet. A variation of closed cut valley. How to seal metal roof valley. Cut the panels from the ground instead of on the roof to avoid damaging the roof with the debris.

Just simple 3d animated digital instructions on how to install a valley on a masterrib panel roof. Masterrib is a 36 wide 5 r. Avoid using anything that will melt the galvalume coating such as a chop saw torch or abrasive blade. Many details in a standing seam metal roof have folds or hemmed edges that conceal the cut edge of the metal.

Install synthetic roofing underlayment or felt paper according to manufacturer specifications and then install the first piece of valley flashing. The shingles are then cut out of the valley area opening the surface of the valley lining to water run off and the environment. With a clean valley you can lay down some peel and stick roofing membrane. Corrosion will happen at some point in the lifetime of the roof.

The metal is usually pre painted to best complement the shingles color blend. For an open valley a sheet of metal usually steel sometimes copper is fastened to the roof deck.