How To Mark Out Roof For 3 Tab Shingles

Use these to line up adjacent shingles and successive courses.

How to mark out roof for 3 tab shingles.

Most three tab asphalt shingles include 1 2 in. As a rule of thumb there are 3 bundles to a square assuming that you are using three tab strip shingles. Use your chalk and tape measure to mark about 12 inches up on the roof for the first set of shingles. However make sure that you do not nail into the tar strip.

See figure 1 directions for applying malarkey 3 tab shingles. Repeat this on the other rake edge. 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. In addition shadow marks may run the length of each shingle near the top of the slots.

If one side is lower then fudge each row a bit so they come out even when you get to the ridge. Alignment slits across the top edge and half slots along the edges. Every 5 inches make a new mark until you get to the rop of the roof. Place nails in the three tab shingles about 3 4 inch 1 8 centimeters above the cutouts near where the tab meets the upper part of the shingle.

In all use four nails per 3 tab shingle. If you are using a power nailer drive nails by squeezing the trigger and bouncing the nailer s tip onto the shingle. 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. These are meant as an aid to horizontal alignment.

Measure up the rest of the rake edge to the peak and make a mark every 5 inches. Drive a nail at one end first then drive the others. Use the chalk line to snap a straight line vertically every 6 inches. 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.

Also place a nail 2 inches from each end of the shingle in line with the other two. Shingle about 1 2 way up the slope then measure from the ridge down to the shingles.