How To Shingle A Valley Existing Roof

Snap a chalkline 2 to 3 inches past the valley center on the top layer of shingles.

How to shingle a valley existing roof.

Start by overlapping a starter from both sides of the valley at the bottom. You want to lay the shingles from the bottom to the top of the valley. Many roofers cut the shingles across because they say it s safer. Shingle the other side of the valley the same way.

Shingle the addition roof letting the new shingles fold through the valley center and onto the old roof deck by at least 1 ft. When you reach the valley lay the shingles over the valley and trim the edges to the chalk line. Then your first shingle goes on the side you are going to cut. The next one goes on the low side.

Attach with nails along the top edge of the strip. You can use a straight edge to achieve a straight cut. Nail down each valley shingle at least two inches 50 mm back from the chalk line. In this video i show you how i do the valleys on a shingle roof.

Over driving nails is always a problem but it is especially dangerous in a valley where water collects. Re lay the shingles you removed from the existing roof. Use a starter strip or cut pieces for a starter course. Begin to install roof shingles on either roof face.

Lift the underlayment out of the way and then lay a 3 ft wide roll of waterproof shingle underlayment in the valley. Roof one side of the valley running the shingles across it. Roof installation how to shingle a valley hd by roofrepair101 more about roofing at. Valleys are tricky areas on a roof where two roof sections meet.

Valleys are areas where leaks can more easily occur so they must be done carefully to ensure. No one of this affirmat. Weave and cut the valley on the highest side of the 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.