How do you fix a cracked shutter staple? First, clear away the snapped staple out of the louver with a tool like of needle-nose pliers. Then apply some adhesive (like wood glue or epoxy) to cover the legs of a replacement staple. weave the staple through the loop on the louver and guide its legs into the existing staple holes on the tilt rod. For extra shutter staples, call us at 713-853-9629.