4. Mark the front edge and then cut the flashing at that mark. Secure it with nails all around the edges. Place the rising edge of the flashing over the bottom edge (figure A). Be sure to wear safety glasses when hammering nails or cutting tin. Also, gloves will protect your hands from the sharp edges of the flashing. 5. Tar the flashing thoroughly by running a thick, even bead in the middle channel of the flashing (figure B). Be sure to get the edges as well.
6. Lay the foundation pieces topside down, so that water can't get underneath them through the tabs. Nail them in place, nailing at each end and at the tabs.
7. Lay the first row of shingles, and nail them in place. Cut custom pieces for the ends and nail them down (figure C).
8. For each row, begin on another side of the roof--left, then right, then left again. This will make your shingles staggered. Place the second and next rows of shingles so that about five inches of the shingles show beneath them. A good way to do this is to measure using the notch on your roofing hatchet (figure D).
9. Shingle both the front and the back of the roof.
10. Measure and cut cap pieces. In order to make a cap piece, score the backside of a shingle tab, about 1-1/2 inches in from the tab break on each side and straight down to meet the tab break. Then snap off the excess.
11. Tar the ridge of the roof and install the cap pieces, nailing them into place (figure E).
12. Cover the top exposed nails with tar for a good watertight seal.
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