Making A Roof Valley

Cut some strips the dimensions are not critical maybe 3 4 to 1 1 2 wide x roughly 5 6 long.

Making a roof valley. 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. From the valley center. To secure the roof valley flashing nail it down carefully. The open woven and closed cut methods are demonstrated.

Measure the width of the sheet metal valley flashing. Joining two roofs of different pitches blind valleys simplify framing. I begin the second side the side that will be cut by snapping a cutline 2 in. Fold the top over the roof ridge and cut the bottom along the drip edge metal.

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. Install synthetic roofing underlayment or felt paper according to manufacturer specifications and then install the first piece of valley flashing. Get some of the flashing material that matches your valley flashing in metal and thickness.

With a closed cut valley there s no need to shingle the two roof planes at the same time. This video demonstrates the proper installation technique for installing roofing valleys. Ensure ice and water protector has been installed along the valley first. Plus cutting the closed cut valley shingles can happen after the rest of the roof is shingled.

Start at the upper row of shingles at the upper end of the. Bend one end of each strip over roughly 3 4 to 1 but do not hammer it tightly flat. With a clean valley you can lay down some peel and stick roofing membrane. Then starting at the base of the.

Typical valley flashing is 14 inches wide. To keep the porch roof framing as simple as possible we installed a structural ridge.