Roofing Valley Styles

Valleys come in three main styles.

Roofing valley styles.

Closed cut where shingles are first installed on the lower adjoining roof slope through the valley line followed by the shingle installation on the higher slope through the valley line. Align the bottom of a shingle along the chalk line bed the shingle into the roofing cement and nail it to the roof deck. Interestingly you can mix and match roof styles when building a gable and valley roof designs for a cross footprint home. Closed valley s or open valleys.

There are two common methods for completing the flashing of a valley in a shingle roof system. Woven closed cut and open. A roof valley is formed where two roof slopes meet. To understand what makes a valley either closed or open it is important to understand how a valley is constructed.

The gable and valley roof is a very popular roof design. With each new course roofing shingles continue up the valley. Woven style where shingles are overlapped across the valley on alternative slopes. Your choice of valley installation method is critical because when improperly installed valleys are risks for serious leaks.

All three styles are good options and come down to personal preference when deciding which is better. Closed woven and open. Two common closed valley designs include. Essentially there are three main ways to shingle a roof valley.

For a closed valley shingles are installed across the joint where planes intersect. Place the nails along the edge of the valley metal not into it. Shingling both a closed cut valley and a long island valley is the same for the first half of the process. Water collects in a valley to flow off the roof.

The shingles on the higher slope are then cut in a straight line through the valley. One of the details that varies between homes is the method of flashing the valley areas of the roof. It s also known as a cross gable roof since the home has a cross footprint. For the next two shingling methods closed cut and long island valleys i work out of the valley using laminated shingles instead of working toward the valley with three tab shingles.