Making A Roof Valley

I begin the second side the side that will be cut by snapping a cutline 2 in.

Making a roof valley.

Start at the upper row of shingles at the upper end of the. Where the porch roof extended over the shed roof we installed a 2x6 ridge that ran from the top of the. Fold the top over the roof ridge and cut the bottom along the drip edge metal. The open woven and closed cut methods are demonstrated.

Position an extension ladder against the lower edge of the roof near the valley that is repaired. Typical valley flashing is 14 inches wide. From the valley center. Plus cutting the closed cut valley shingles can happen after the rest of the roof is shingled.

Joining two roofs of different pitches blind valleys simplify framing. 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. Measure the width of the sheet metal valley flashing.

Ensure ice and water protector has been installed along the valley first. Then starting at the base of the. This video demonstrates the proper installation technique for installing roofing valleys. The valley rafter is marked for a 12 in 17 pitch and then cut with a double bevel to fit into the ridge intersection.

To keep the porch roof framing as simple as possible we installed a structural ridge. Bend one end of each strip over roughly 3 4 to 1 but do not hammer it tightly flat. Get some of the flashing material that matches your valley flashing in metal and thickness. To secure the roof valley flashing nail it down carefully.

Make metal roof valley clips cleats. With a clean valley you can lay down some peel and stick roofing membrane.