How To Mark Out Roof For 3 Tab Shingles

Shingle about 1 2 way up the slope then measure from the ridge down to the shingles.

How to mark out roof for 3 tab shingles.

Continue working up the roof subsequent courses overlap ping the preceding by 2 4 51 102 mm depending on the type of underlayment being applied. Repeat this on the other rake edge. Use the chalk line to snap a straight line vertically every 6 inches. A square of shingles is the number of shingles needed to cover 100 sq feet of roof area.

Also place a nail 2 inches from each end of the shingle in line with the other two. However make sure that you do not nail into the tar strip. If one side is lower then fudge each row a bit so they come out even when you get to the ridge. See figure 1 directions for applying malarkey 3 tab shingles.

Measure up the rake edge from the drip edge 12 inches less 3 4 and make a mark the 3 4 allows for the starter strip overhang the drip edge. To attach a 3 tab shingle align it with the layout line and drive nails 1 2 inch above the cutout slots including the half slots at each side. If you are using a power nailer drive nails by squeezing the trigger and bouncing the nailer s tip onto the shingle. These are meant as an aid to horizontal alignment.

Use these to line up adjacent shingles and successive courses. Every 5 inches make a new mark until you get to the rop of the roof. Drive a nail at one end first then drive the others. Most three tab asphalt shingles include 1 2 in.

Measure up the rest of the rake edge to the peak and make a mark every 5 inches. In addition shadow marks may run the length of each shingle near the top of the slots. Use your chalk and tape measure to mark about 12 inches up on the roof for the first set of shingles. In all use four nails per 3 tab shingle.

Repeat this on both sides of the roof. As a rule of thumb there are 3 bundles to a square assuming that you are using three tab strip shingles.