Install Asphalt Shingles Roof Valley

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Install asphalt shingles roof valley. Then begin nailing the shingles to the roof working in rows and starting at the edge of the roof. Many roofers cut the shingles across because they say it s safer. Install an underlayment centered in the roof valley. While the asphalt shingles will be the primary water shedding roof layer there are many benefits to installing a roof underlayment.

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. Almost 75 of roof leaks occur in valleys where two roof planes meet or at chimneys or other roof penetrations so be sure to install roof flashing in these areas prior to the start of the installation. Nail the drip edge in place using your hammer and roofing nails. As the asphalt shingles are installed over the roof deck the shingles are extended into the valley.

Apply an approximately 3 inch width of asphalt roofing cement along the sides of flashing and embed shingles in mastic. To shingle out of the valley with laminated shingles lay a shingle down as a gauge and mark the corner at the bottom left and top right of the roof. Roof installation how to shingle a valley hd by roofrepair101 more about roofing at. However these shingles are not run entirely through the valley area but rather the center of the metal valley is left exposed.

Then install a non corrosive metal valley flashing of 24 minimum width. I then move the shingle to the uppermost course on the roof plane line up the mark on the shingle with the valley center and again mark the corner. The felt is laid in horizontal courses overlapping the eave ice and water protector by 4 and the valley membrane flashing by 6. A woven valley shingle installation has other drawbacks including that they are slow to install especially in cold weather and more difficult to repair than the other types.

In this video i show you how i do the valleys on a shingle roof. Once you ve done that cut your shingles to size if they re not already. In addition it is important to avoid nailing the shingles through the valley metal. In order to shingle this kind of roof valley a roofing professional has to install both roof faces at the same time which is quite slow.

Flashed open valleys may be more durable and water resistant than blind alleys in which the shingles overlap from one plane to the other and.