A roof ridge vent having a ventilation component integrally secured to a waterproof outer covering. During installation of the vent, both the ventilation component and outer covering are simultaneously installed in a single process step. The use and separate installation of cap shingles or the like over a pre-installed vent is eliminated. The vent and covering are provided in an elongate, continuous length in a spiral roll and are installed as a single continuous length on a roof ridge overlying an elongate open ventilation slot.