Roof installation how to shingle a valley hd by roofrepair101 more about roofing at.
How to shingle valle on the roof.
Gaf mastering the roof chapter 12 this video demonstrates the proper installation technique for installing roofing valleys.
You can use a straight edge to achieve a straight cut.
Continue until you reach the top edge of the valley roof.
Roof valleys are troughs that discard runoff water where two sections of sloped roof meet.
Each successive shingle should be then placed with a six inch overlap or until the adhesive strip contacts the bottom of the shingle tabs.
The open woven and closed cut methods are demonstrated.
Nail down each valley shingle at least two inches 50 mm back from the chalk line.
From this starter shingle continue moving up the valley roof.
The next shingle should be directly atop the first one.
In addition it is important to avoid nailing the shingles through the valley metal.
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.
Preparation of the valley with an underlayment is a critical part of your roof installation.
The three methods to shingle a roof valley.
Over driving nails is always a.
Begin to install roof shingles on either roof face.
As the asphalt shingles are installed over the roof deck the shingles are extended into the valley.
However these shingles are not run entirely through the valley area but rather the center of the metal valley is left exposed.
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.
When you reach the valley lay the shingles over the valley and trim the edges to the chalk line.
Step 6 shingle valley.