The Garadry garage door threshold seal has been designed to form a watertight seal between the garage door and the floor. Additionally, energy costs may be reduced as a result of heat conservation (seal prevents drafts, cold air, snow and wind-blown rainwater from entering the garage through the gap under the garage door). The seal is a viable alternative to an aqua grid. The latter may prove to be both time-consuming and expensive. The product is supplied in kit form with the adhesive required to install the threshold, along with full-color installation instructions, and additionally high-density foam side blocks, which can be used to seal any gaps around the sides of the threshold when in position behind the garage door.