MIL-HDBK-1001/SA
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.
9.8 Applicable Details. NRCA Steep Roofing Manual, SMACNA Architectural Sheet Metal Manual, and ARMA manuals (latest issues).
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