Abstract: A tape and adhesive applicator for dry wall taping has an adhesive dispensing nozzle adapted to be mounted on a caulking gun and an applicator roll mounted adjacent the outlet of the nozzle. The nozzle has an opening adjacent its inlet for receiving a tape for passage through the nozzle from the opening to the nozzle outlet whereby adhesive is apply to one side of the tape. The nozzle has a spring-biased adjustable gate member to control application of the adhesive and to act as a pressure relief valve if the pressure in the caulking gun becomes too great. A plunger-actuated cutter is provided to cut the tape to the proper length. The diameter of the applicator roll and length of the plunger are chosen such that the tape is coated with a uniform amount of adhesive and is automatically cut to the correct length without the need for measuring the tape.