Metal Roofing Valley Cut

Roofs that feature open valleys use v or w shaped metal pieces at the center of the valley.

Metal roofing valley cut.

Avoid using anything that will melt the galvalume coating such as a chop saw torch or abrasive blade. I snapped my line in the valley 4 out of center and made a jig to clamp to the metal and used a metal stud saw blade to cut a clean line. I just started installing sheet metal roofing skyline 16 wide on a house which has 2 gable dormers. No sales pitch or other fluff.

Roofing shingles are installed then cut and sealed where they overlap the metal channel. How to cut metal roofing to fit valleys. Best practices for sealing the metal roof valley vary based on the slope of the roof. The sloping roof planes then stop some inches short of this centerline leaving the valley open.

With an open valley a strip of metal will be visible on the roof wherever two opposing roof planes meet. The metal is usually pre painted to best complement the shingles color blend. Masterrib is a 36 wide 5. How to seal metal roof valley.

I have my valley custom made with water trough to help with leaking. For an open valley a sheet of metal usually steel sometimes copper is fastened to the roof deck. The v or w shaped metal pieces used as centerlines could be galvanized copper aluminum zinc alloy or steel coated. When cutting your metal roofing to fit valleys it s important to use the proper tools.

In this video i show you how i do the valleys on a shingle roof many roofers cut the shingles across because they say it s safer no one of this affirmatio. Just simple 3d animated digital instructions on how to install a valley on a masterrib panel roof. The top joinery of both valleys when they meet on the same plane of roof is shown here.