Making A Roof Valley

This video demonstrates the proper installation technique for installing roofing valleys.

Making a roof valley.

To secure the roof valley flashing nail it down carefully. Where the porch roof extended over the shed roof we installed a 2x6 ridge that ran from the top of the. Make metal roof valley clips cleats. With a clean valley you can lay down some peel and stick roofing membrane.

Joining two roofs of different pitches blind valleys simplify framing. To keep the porch roof framing as simple as possible we installed a structural ridge. Plus cutting the closed cut valley shingles can happen after the rest of the roof is shingled. Position an extension ladder against the lower edge of the roof near the valley that is repaired.

Then starting at the base of the. The valley rafter is marked for a 12 in 17 pitch and then cut with a double bevel to fit into the ridge intersection. Ensure ice and water protector has been installed along the valley first. Bend one end of each strip over roughly 3 4 to 1 but do not hammer it tightly flat.

Typical valley flashing is 14 inches wide. On the common rafters the plumb cut is marked with a framing square for a 12 in 12 pitch 45 and cut square i e no bevel. Cut some strips the dimensions are not critical maybe 3 4 to 1 1 2 wide x roughly 5 6 long. Install synthetic roofing underlayment or felt paper according to manufacturer specifications and then install the first piece of valley flashing.

From the valley center. I begin the second side the side that will be cut by snapping a cutline 2 in. The open woven and closed cut methods are demonstrated. Measure the width of the sheet metal valley flashing.

Only nail at the edges with only enough nails to. Start at the upper row of shingles at the upper end of the.