Roofing Shingles How To Install Valleys

The result of this layout leaves a small triangle of the valley shingle that is exposed on each course.

Roofing shingles how to install valleys. Stop nailing 6 inches from the center. Closed valleys are completed during shingle installation. When you reach the end of a row cut the last shingle to size before installing it. Shingle the other side of the valley the same way.

Roof one side of the valley running the shingles across it. Snap a chalkline 2 to 3 inches past the valley center on the top layer of shingles. The two pieces should meet neatly at the corners. 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.

Then begin nailing the shingles to the roof working in rows and starting at the edge of the roof. As the asphalt shingles are installed over the roof deck the shingles are extended into the valley. I install the shingles for each course with the lower corner lined up with the edge of the valley shingles. Drive nails at high points on the underlying roof the bottoms of the shingles.

However these shingles are not run entirely through the valley area but rather the center of the metal valley is left exposed. After you have laid all of the shingles in the valley it should look uniform like the roof below. From the ground the long island valley is indistinguishable from a cut valley. Attach it by driving nails into the outside edges only.

Lay one and two tab shingles as you near the valley so full size shingles will run across the valley. A proper valley installation is a critical component of any roof ensuring the long term protection of this vulnerable area. In addition it is important to avoid nailing the shingles through the valley metal. Nail the drip edge in place using your hammer and roofing nails.

If your roof will have open valleys which iko recommends now is when the valleys should be lined with a pre formed width of corrosion resistant metal. Install the shingles so that each one is overlapping the shingle directly below it which will conceal the nails. Install new flashing metal flashing is often called drip edge along the bottom of the roof near your gutters.