How To Shingle A Valley Existing Roof

Rip cut the starter strip or starter pieces so that they butt up against the second course of existing shingles and are even with the front edge of the existing roofing.

How to shingle a valley existing roof.

Attach with nails along the top edge of the strip. Roof one side of the valley running the shingles across it. You want to lay the shingles from the bottom to the top of the valley. Weave and cut the valley on the highest side of the roof.

Shingle the addition roof letting the new shingles fold through the valley center and onto the old roof deck by at least 1 ft. Lift the underlayment out of the way and then lay a 3 ft wide roll of waterproof shingle underlayment in the valley. Valleys are areas where leaks can more easily occur so they must be done carefully to ensure. Snap a chalkline 2 to 3 inches past the valley center on the top layer of shingles.

Then your first shingle goes on the side you are going to cut. Lay one and two tab shingles as you near the valley so full size shingles will run across the valley. In this video i show you how i do the valleys on a shingle roof. Re lay the shingles you removed from the existing roof.

Nail down each valley shingle at least two inches 50 mm back from the chalk line. Stop nailing 6 inches from the center. You can use a straight edge to achieve a straight cut. For a closed valley the roofer will install the shingles onto the roof deck and extend the asphalt shingles through the area where opposing roof planes meet so that the shingles cover or close the valley area.

The next one goes on the low side. When you reach the valley lay the shingles over the valley and trim the edges to the chalk line. Use a starter strip or cut pieces for a starter course. Many roofers cut the shingles across because they say it s safer.

No one of this affirmat. Shingle the other side of the valley the same way. Start by overlapping a starter from both sides of the valley at the bottom. Begin to install roof shingles on either roof face.