Making A Roof Valley

Install synthetic roofing underlayment or felt paper according to manufacturer specifications and then install the first piece of valley flashing.

Making a roof valley.

Where the porch roof extended over the shed roof we installed a 2x6 ridge that ran from the top of the. 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.

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. To keep the porch roof framing as simple as possible we installed a structural ridge. Start at the upper row of shingles at the upper end of the.

With a closed cut valley there s no need to shingle the two roof planes at the same time. Position an extension ladder against the lower edge of the roof near the valley that is repaired. Ensure ice and water protector has been installed along the valley first. Cut some strips the dimensions are not critical maybe 3 4 to 1 1 2 wide x roughly 5 6 long.

Typical valley flashing is 14 inches wide. Measure the width of the sheet metal valley flashing. Plus cutting the closed cut valley shingles can happen after the rest of the roof is shingled. Make metal roof valley clips cleats.

Fold the top over the roof ridge and cut the bottom along the drip edge metal. This video demonstrates the proper installation technique for installing roofing valleys. Only nail at the edges with only enough nails to. 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. With a clean valley you can lay down some peel and stick roofing membrane.