applied over old roofing, the roofing nails selected
designates the length of the nail (1-penny, 2-penny,
must be of sufficient length to go through the old
etc.), which is the same for all types.
material and secure the new. Asphalt roofing
approximate number of nails per pound varies
material is fastened with corrosion resistant nails,
according to the type and size. The wire gage
never with plain nails. Nailing is begun in the center
number varies according to type. Figure 1-15
of the shingle, just above the cutouts or slots, to avoid
provides the information implicit in the term "penny"
for each of the type of nails referred to in this section.
The "d" adjacent to the numbers in the "Size" column
c. Sizes and uses of nails. Nail sizes are
is the accepted abbreviation of the
designated by the use of the term "penny". This term
Figure 1-15. Nail lengths.