A tack spraying device mountable on an engine driven vehicle having a storage tank for maintaining tack stored in the container under pressure during operation, a first line connecting the exhaust pipe of the vehicle engine to the storage tank in a manner to permit transfer of the engine exhaust to the interior of the storage tank and to serve as a source of the pressure within the container, and a second line connecting the storage tank to a spray nozzle in a manner to transfer the tack in the storage tank to the spray nozzle.