How To Do A Valley On A Metal Roof

Lay the flashing down in the roof valley and start at the lower end of the roof.

How to do a valley on a metal roof.

Fold the top over the roof ridge and cut the bottom along the drip edge metal. How to shingle a valley with architectural shingles. Apply two beads of roofing cement to attach the top layer shingles to the bottom layer shingles. Ensure ice and water protector has been installed along the valley first.

Install synthetic roofing. Also apply cement to attach the top layer shingles to each other see steps 5 and 6 in open metal valley above. Cut each side at the upper end of the valley to conform with the. To secure the roof valley flashing nail it down carefully.

Place corner pieces where panels will meet bends at the edge of the roofing. Steep slope roofs slope greater than 3 12 cut the panels at an angle for the valley then bend the hem end of the panel and hook it with a cleat. Use 1 1 4 inch nails to cover the outline of the roof with strips of metal eave flashing also called edging. Use tape sealant between the valley trim and the panel.

Then starting at the base of the valley center your first piece of flashing in the valley. 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 1 inch galvanized roofing nails.

With a clean valley you can lay down some peel and stick roofing membrane. Use fasteners to attach the panel to the structure making sure that there is complete compression of the sealant. If there are gutters installed on the eaves the eave flashing should be installed to overhang the lip of the gutter by about 1 2 inch.