How To Flash A Metal Roof Valley

Just simple 3d animated digital instructions on how to install a valley on a masterrib panel roof.

How to flash a metal roof valley. Use fasteners to attach the panel to the structure making sure that there is complete compression of the sealant. Lay one and two tab shingles as you near the valley so full size shingles will run across the valley. Using clips permits movement in the valley as temperatures change. 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.

One common method is to lay the edge metal under the eaves membrane and over the rake details concrete masonry roofing wrb flashing. The installer fabricates simple clips or valley flashing cleats whose bent edge interlocks with the folded over or hemmed edges of the metal roof valley flashing to secure the valley to the roof deck. Use 1 inch galvanized roofing nails. 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. Cut the bottom edge and fold it down over the drip edge. Masterrib is a 36 wide 5 r. Lay the flashing down in the roof valley and start at the lower end of the roof.

How to seal metal roof valley. Snap a chalkline 2 to 3 inches past the valley center on the top layer of shingles. Use tape sealant between the valley trim and the panel. Fold the top of the flashing over the ridge.

No sales pitch or other fluff. Best practices for sealing the metal roof valley vary based on the slope of the roof. Shingle the other side of the valley the same way. To splice the pieces add roofing cement to the lower piece and install the upper piece with at least a six inch.

Use roof valley cleats at intervals of 24 o c. Stop nailing 6 inches from the center.