Installing a garage door rubber bottom is a relatively straightforward task that homeowners can undertake themselves, provided they have the right tools. Begin by removing the old weatherstripping, if applicable, and clean the bottom edge of the door thoroughly. Next, cut the new rubber strip to size, ensuring it fits snugly along the entire width of the door. Many products come with adhesive backing, making installation easy; however, for added security, some homeowners opt to use screws.