Making A Roof Valley

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

Making a roof valley. Get some of the flashing material that matches your valley flashing in metal and thickness. Joining two roofs of different pitches blind valleys simplify framing. Measure the width of the sheet metal valley flashing. Start at the upper row of shingles at the upper end of the.

Cut some strips the dimensions are not critical maybe 3 4 to 1 1 2 wide x roughly 5 6 long. Plus cutting the closed cut valley shingles can happen after the rest of the roof is shingled. With a clean valley you can lay down some peel and stick roofing membrane. Typical valley flashing is 14 inches wide.

This video demonstrates the proper installation technique for installing roofing valleys. Only nail at the edges with only enough nails to. Where the porch roof extended over the shed roof we installed a 2x6 ridge that ran from the top 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.

Then starting at the base of the. 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. I begin the second side the side that will be cut by snapping a cutline 2 in. From the valley center.

Ensure ice and water protector has been installed along the valley first. Install synthetic roofing underlayment or felt paper according to manufacturer specifications and then install the first piece of valley flashing. Position an extension ladder against the lower edge of the roof near the valley that is repaired. To secure the roof valley flashing nail it down carefully.

The open woven and closed cut methods are demonstrated. To keep the porch roof framing as simple as possible we installed a structural ridge.