Roofing Shingles How To Install Valleys

Attach it by driving nails into the outside edges only.

Roofing shingles how to install valleys.

Closed valleys are completed during shingle installation. Step 6 install valley flashing if you have an open valley install new w shape metal or vinyl valley flashing to fit directly over the old flashing. Stop nailing 6 inches from the center. However these shingles are not run entirely through the valley area but rather the center of the metal valley is left exposed.

When you reach the end of a row cut the last shingle to size before installing it. Roof one side of the valley running the shingles across it. A proper valley installation is a critical component of any roof ensuring the long term protection of this vulnerable area. As the asphalt shingles are installed over the roof deck the shingles are extended into the valley.

The result of this layout leaves a small triangle of the valley shingle that is exposed on each course. Always install flashing around a chimney and other valleys where two roof planes meet as these areas are more prone to leaks if not protected. Snap a chalkline 2 to 3 inches past the valley center on the top layer of shingles. Shingle the other side of the valley the same way.

I install the shingles for each course with the lower corner lined up with the edge of the valley shingles. Then begin nailing the shingles to the roof working in rows and starting at the edge of the roof. Install new flashing metal flashing is often called drip edge along the bottom of the roof near your gutters. Drive nails at high points on the underlying roof the bottoms of the shingles.

From the ground the long island valley is indistinguishable from a cut valley. In addition it is important to avoid nailing the shingles through the valley metal. Lay one and two tab shingles as you near the valley so full size shingles will run across the valley. Valleys can either be open or closed open valleys are not covered with shingles closed valleys are.

Install the shingles so that each one is overlapping the shingle directly below it which will conceal the nails. Nail the drip edge in place using your hammer and roofing nails. The two pieces should meet neatly at the corners.