How do you start the first run on a new roof?

Answer by  rhelt (461)

Start off by running one row of shingles upside down, put one nail in roughly the middle of each tab. With a hook blade razor knife, remove the top 3 inches or so of each shingle. This will prevent a lump when the second row is layed. Now start by running the first row flush with the upside down row.

Answer by  Allstar (2071)

Snap 2 chalk lines on one edge of the roof, one at 35", the other at 29". This gives you the stagger. Let 1" of the first row hang down.