The Garadry garage door flood barrier seal has been designed to form a watertight seal between the bottom of the garage door and the floor. It can also be used as a flood diverter between doorways and across driveways. The seal prevents drafts, cold air, snow and wind-blown rainwater from entering the garage through the gap under the garage door. The product is supplied in kit form, with a length of the floor barrier threshold, sufficient adhesive, full-color installation instructions and foam side blocks, which are used to seal the edges if there are gaps between the side tracks and the wall