How To Cut A Metal Roof Valley

The metal is usually pre painted to best complement the shingles color blend.

How to cut a metal roof valley.

No sales pitch or other fluff. How to seal metal roof valley. One variant of the closed cut valley is the california valley also called long island valley and new jersey valley. Fold the top over the roof ridge and cut the bottom along the drip edge metal.

Ultimately laying any shingle in a valley can restrict proper water and debris flow unlike the metal flashing used in an open valley. Just simple 3d animated digital instructions on how to install a valley on a masterrib panel roof. A variation of closed cut valley. With an open valley a strip of metal will be visible on the roof wherever two opposing roof planes meet.

Cut the panels from the ground instead of on the roof to avoid damaging the roof with the debris. The shingles are then cut out of the valley area opening the surface of the valley lining to water run off and the environment. Install synthetic roofing underlayment or felt paper according to manufacturer specifications and then install the first piece of valley flashing. For an open valley a sheet of metal usually steel sometimes copper is fastened to the roof deck.

California cut valleys make for a great closed cut valley however we have an installation trick to improve performance in areas of high winds snow or rain. Roofing shingles are installed then cut and sealed where they overlap the metal channel. Low slope roofs slope less than 3 12 use tape sealant between the valley trim and the panel. With a clean valley you can lay down some peel and stick roofing membrane.