Use your chalk and tape measure to mark about 12 inches up on the roof for the first set of shingles.
How to shingle a roof using architectural shingles.
Place a whole shingle next to it.
Install the drip edge over the gable end felt and under the eaves felt.
Attach each shingle with three nails one in the center and one each on each side.
You can cut the layered edge of architectural roof shingles and use the cut flat piece as your starter roof single.
How to install architectural shingles or better stated how not to install is an explanation of how to and how not to install architectural shingles.
Attach the starter strip.
Roll out and staple down roofing felt in overlapping rows.
Mark a chalk on subsequent roof layers upward.
How to shingle a shed with 3 tab and architectural shingles.
After that correctly positionthe first shingle and properly snap a line of chalk across the roof to mark the top layer of the shingles.
Continue laying down shingles until the row is complete.
Lay the next row of shingles directly on top of the first row making the row two tiles thick.
Starting at the bottom of the roof map out a guideline with chalk.
Apply the first real course of architectural shingles so that the tabs reach the lower edge of the starter course.