How To Flash A Metal Roof Valley

One common method is to lay the edge metal under the eaves membrane and over the rake details concrete masonry roofing wrb flashing.

How to flash a metal roof valley.

Lay the flashing down in the roof valley and start at the lower end of the roof. Using clips permits movement in the valley as temperatures change. Masterrib is a 36 wide 5 r. Shingle the other side of the valley the same way.

No sales pitch or other fluff. Use roof valley cleats at intervals of 24 o c. Use 1 inch galvanized roofing nails. Cut the bottom edge and fold it down over the drip edge.

Just simple 3d animated digital instructions on how to install a valley on a masterrib panel roof. Snap a chalkline 2 to 3 inches past the valley center on the top layer of shingles. Make sure to cover the gap at the bottom of the raised ridge. Roof one side of the valley running the shingles across it.

Two ways to flash roof edges protect the eave from ice dams and sideways rain step one in steep slope roofing is the edge flashing. Best practices for sealing the metal roof valley vary based on the slope of the roof. Attach the flashing panel in place at the bottom. Make sure that the end of the flashing panel is perfectly in line with the edge of the roof.

Use tape sealant between the valley trim and the panel. To splice the pieces add roofing cement to the lower piece and install the upper piece with at least a six inch. Stop nailing 6 inches from the center. Fold the top of the flashing over the ridge.

Since this was an introductory guide to the basics of standing seam metal roof installations we purposefully left out more technical details such as z bar flashing end wall and valley flashing details however they are covered in the video above if you like to learn more about the components that go beyond the basics. Lay one and two tab shingles as you near the valley so full size shingles will run across the valley.