Many pros shingle in a vertical line up the roof because it s much faster.
How to install new roofing shingles.
Pull the drip edge down about a half inch from that line to create a gap between the drip edge and the fascia board.
Using the chalk line snap a line between the two marks to get a straight edge.
Do the hips in the same manner with the ridge shingles overlapping the hips at the joints.
To install asphalt shingles start by installing underlayment and new flashing on the roof.
To start installing shingles line up aluminum drip edge flush with the edge of the roof and make a pencil line at the top on each end of the house.
Repeat this on both sides of the roof.
Step 7 install the ridge shingles.
Every 5 inches make a new mark until you get to the rop of the roof.
Center a 914 mm 36 width strip of an ice and water protector membrane in the valley.
Then begin nailing the shingles to the roof working in rows and starting at the edge of the roof.
Ridge shingles are one 12 inch tab of a full shingle and leave 6 inches of the previous shingle exposed.
The recommended flashing material is a 28 gauge galvanized metal or an equivalent corrosion resistant non staining material check with local codes.
Use the chalk line to snap a straight line vertically every 6 inches.
Known in the trade as vertical racking or staggering this how to lay shingles method enables the roofer to install a single column of shingles all the way to the peak without the wasted back and forth motion necessary to fill several rows of stair steps.
Once you have completed both faces of the gable roof you can install the ridge shingles.