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.

Making a roof valley.

The open woven and closed cut methods are demonstrated. Start at the upper row of shingles at the upper end of the. Position an extension ladder against the lower edge of the roof near the valley that is repaired. Install synthetic roofing underlayment or felt paper according to manufacturer specifications and then install the first piece of valley flashing.

Plus cutting the closed cut valley shingles can happen after the rest of the roof is shingled. 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.

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

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. Bend one end of each strip over roughly 3 4 to 1 but do not hammer it tightly flat.

Ensure ice and water protector has been installed along the valley first. With a closed cut valley there s no need to shingle the two roof planes at the same time. Only nail at the edges with only enough nails to. Typical valley flashing is 14 inches wide.

Fold the top over the roof ridge and cut the bottom along the drip edge metal. Then starting at the base of the.