Hold a hurricane strap flush against the roof joist and the two boards at the top of the wall. Generally, walls are built with two 2-by-4 or 2-by-6 boards at the top of the wall studs. The bottom part of the strap will cover the two top boards of the wall. The top part of the strap should be flush against the side of the roof joist.
Drive an 8d nail through one of the top holes in the bottom part of the hurricane strap. Use the hammer to pound the nail until it is flush with the metal. This will hold the strap in place against the top wall plate. Drive 8d nails into the rest of the holes in the bottom part of the hurricane strap. Hammer the nails until they are flush with the metal strap.
Drive a nail into the top hole in the top part of the hurricane strap. This will secure the top part of the strap to the roof joist. Drive 8d nails into the rest of the holes in the top part of the hurricane strap. This will secure the top of the strap to the roof joist. Repeat these steps for each of the other roof joists. You must nail a strap to each end of the roof joists.