How do you mend a cracked shutter staple? To start, clear away the broken staple from the louver with a pair of needle-nose pliers. Then apply some adhesive (like wood glue or epoxy) to cover the legs of a replacement staple. guide the staple into the loop on the louver and slide its legs into the same staple holes on the tilt rod. For extra shutter staples, call us at 305-520-7515.