Making A Roof Valley

Only nail at the edges with only enough nails to.

Making a roof valley.

To keep the porch roof framing as simple as possible we installed a structural ridge. With a closed cut valley there s no need to shingle the two roof planes at the same time. Get some of the flashing material that matches your valley flashing in metal and thickness. Ensure ice and water protector has been installed along the valley first.

Install synthetic roofing underlayment or felt paper according to manufacturer specifications and then install the first piece of valley flashing. Joining two roofs of different pitches blind valleys simplify framing. Typical valley flashing is 14 inches wide. Start at the upper row of shingles at the upper end of the.

Then starting at the base of the. With a clean valley you can lay down some peel and stick roofing membrane. To secure the roof valley flashing nail it down carefully. This video demonstrates the proper installation technique for installing roofing valleys.

Cut some strips the dimensions are not critical maybe 3 4 to 1 1 2 wide x roughly 5 6 long. I begin the second side the side that will be cut by snapping a cutline 2 in. Measure the width of the sheet metal valley flashing. The open woven and closed cut methods are demonstrated.

The valley rafter is marked for a 12 in 17 pitch and then cut with a double bevel to fit into the ridge intersection. From the valley center. Where the porch roof extended over the shed roof we installed a 2x6 ridge that ran from the top of the. 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.

Make metal roof valley clips cleats. Bend one end of each strip over roughly 3 4 to 1 but do not hammer it tightly flat.