Abstract: A replacement weather seal for use with a garage door having an existing two-part weather seal previously installed on the garage door. The existing weather seal has a rigid base fastened to a support frame surrounding the garage door, and a flexible combination cover and flap portion integral with the rigid base. The replacement weather seal replaces the flap portion of the existing seal but leaves the rigid base that is fastened to the support frame. The replacement weather seal comprises a main body which attaches to the rigid of the existing weather seal. Two sealing flaps are integrally molded to opposite edges of the main body, which flaps deflect and form a weather-tight seal with both the garage door and the existing rigid base. An L-shaped curb structure connects with the main body and positions the replacement weather seal on the existing weather seal rigid base.