How To Cut A Metal Roof Valley

Install synthetic roofing underlayment or felt paper according to manufacturer specifications and then install the first piece of valley flashing.

How to cut a metal roof valley.

Roofing shingles are installed then cut and sealed where they overlap the metal channel. Ultimately laying any shingle in a valley can restrict proper water and debris flow unlike the metal flashing used in an open valley. Best practices for sealing the metal roof valley vary based on the slope of the roof. Just simple 3d animated digital instructions on how to install a valley on a masterrib panel roof.

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

How to seal metal roof valley. When to choose a closed valley over an open valley. Cut the panels from the ground instead of on the roof to avoid damaging the roof with the debris. A variation of closed cut valley.

The metal is usually pre painted to best complement the shingles color blend. No sales pitch or other fluff. One variant of the closed cut valley is the california valley also called long island valley and new jersey valley. For an open valley a sheet of metal usually steel sometimes copper is fastened to the roof deck.