2nd course and following ones.
Roof shingles cut by insatllers.
Inside and outside corners available.
Roofers install these dormers as they install the rest of the roof.
Closed cut valleys are installed quickly and have a cleaner sharper look than woven valleys.
You can save a few bucks using pre cut starter strips instead of using a whole shingle.
Cut a 50 mm 2 triangle off the top corner to direct water into the valley and embed the valley end of each shingle into a 75 mm 3 band of asphalt plastic cement.
This video demonstrates the proper installation technique for installing roofing valleys.
Reduces installation time by up to 60.
The open woven and closed cut methods are demonstrated.
Cut your last shingle on each row to size repeating all the way to the ridge.
The 3 tab asphalt shingle also called a composition shingle or fiberglass shingle is the most common type of roofing shingle.
For the 3rd course shorten one tab.
Other composition shingles such as architectural and random cutouts are installed using most of the same techniques.
Fix the roof shingle so that the lower end of the headlap is aligned with the top of the 1st row shingle cut out.
Install the starter strip which is just a backing for the first visible row of shingles.
Shorten the shingle of a tab.
Butt a full shingle up against the cut shingle and nail into place.
Closed cut shingle valley installation.
When the shingle row gets to the dormer they keep going and maintain the regular straight row of shingles.
If the eyebrow curves dramatically this is best done with thinner more flexible traditional shingles over laminate shingles.
Makes shingle installation more efficient and economical while retaining the authentic look of individual shingles.
Once you ve reached the ridge bend the shingle over the ridge so that each side is equal and nail it into place with a single nail on each side.
Pre cut and pre assembled for quick installation and a flawless finish.
Use 4 nails per shingle and 6 nails on the prevailing windward sides of the roof as wind resistance nailing.
One layer of shingles actually crosses the valley beneath the other.
Repeat this basic pattern alternating shingles across the roof working toward the right side using the chalk line to keep the shingles straight horizontally.
Cut installation time by more than half.
Start with a complete shingle and continue fitting the roof shingles on the first row.
Do the same with the next shingle continuing this step until you get to the far edge of the ridge.