Making A Roof Valley

To secure the roof valley flashing nail it down carefully.

Making a roof valley.

Joining two roofs of different pitches blind valleys simplify framing. Only nail at the edges with only enough nails to. 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.

The valley rafter is marked for a 12 in 17 pitch and then cut with a double bevel to fit into the ridge intersection. Fold the top over the roof ridge and cut the bottom along the drip edge metal. Get some of the flashing material that matches your valley flashing in metal and thickness. From the valley center.

Then starting at the base of the. Ensure ice and water protector has been installed along the valley first. Where the porch roof extended over the shed roof we installed a 2x6 ridge that ran from the top of the. I begin the second side the side that will be cut by snapping a cutline 2 in.

Install synthetic roofing underlayment or felt paper according to manufacturer specifications and then install the first piece of valley flashing. 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. Position an extension ladder against the lower edge of the roof near the valley that is repaired. With a clean valley you can lay down some peel and stick roofing membrane.

To keep the porch roof framing as simple as possible we installed a structural ridge. Measure the width of the sheet metal valley flashing. Bend one end of each strip over roughly 3 4 to 1 but do not hammer it tightly flat. This video demonstrates the proper installation technique for installing roofing valleys.

With a closed cut valley there s no need to shingle the two roof planes at the same time. Typical valley flashing is 14 inches wide.