MIL-HDBK-1001/5A
fastening, and additional headlap (3 inches (76 millimeters)
additional in 70 to 100 miles per hour (113 to 161 kilometers per
hour) wind zones, 4 inches (102 millimeters) additional in
hurricane zones of 100 plus miles per hour (161 kilometers per
hour) winds.)
9.7
Flashings. Flashings are required on steep roofs as
well as low slope roofs to seal the joints at roof terminations
and intersections - e.g., where roof planes intersect to form
valleys, where dormers, chimneys, skylights, and other components
pierce the roof, and at roof perimeters. For general guidance to
the materials and techniques in flashing steep roofs refer to
Table 4.
Applicable Details. NRCA Steep Roofing Manual, SMACNA
9.8
Architectural Sheet Metal Manual, and ARMA manuals (latest
issues).
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