A mobile coating system comprising: (a) a single elongate shipping container that is transportable to a worksite, the single elongate shipping container having a first end and a second end longitudinally opposite to the first end, the single elongate shipping container having an enclosed area that provides controlled temperature and humidity; (b) a plurality of stations (20, 22, 24, 26, 28, 30) located within the single elongate shipping container, the plurality of stations (20, 22, 24, 26, 28, 30) comprising: (i) a loading station configured for loading a high voltage line electrical insulator to be coated; (ii) at least one coating station that includes a robotically controlled applicator configured to apply a silicone elastomeric coating to the high voltage line electrical insulator while within the single elongate shipping container; (iii) a curing station located after the at least one coating station configured for curing the silicone elastomeric coating; and (iv) an unloading station configured for unloading the coated high voltage line electrical insulator; and (c) an endless loop conveyor located within the single elongate shipping container configured for conveying the high voltage line electrical insulator through the plurality of stations (20, 22, 24, 26, 28, 30) within the single elongate shipping container, wherein the endless loop conveyor has an elongated circular path. (a) a single elongate shipping container that is transportable to a worksite, the single elongate shipping container having a first end and a second end longitudinally opposite to the first end, the single elongate shipping container having an enclosed area that provides controlled temperature and humidity; (b) a plurality of stations (20, 22, 24, 26, 28, 30) located within the single elongate shipping container, the plurality of stations (20, 22, 24, 26, 28, 30) comprising: (i) a loading station configured for loading a high voltage line electrical insulator to be coated; (ii) at least one coating station that includes a robotically controlled applicator configured to apply a silicone elastomeric coating to the high voltage line electrical insulator while within the single elongate shipping container; (iii) a curing station located after the at least one coating station configured for curing the silicone elastomeric coating; and (iv) an unloading station configured for unloading the coated high voltage line electrical insulator; and (i) a loading station configured for loading a high voltage line electrical insulator to be coated; (ii) at least one coating station that includes a robotically controlled applicator configured to apply a silicone elastomeric coating to the high voltage line electrical insulator while within the single elongate shipping container; (iii) a curing station located after the at least one coating station configured for curing the silicone elastomeric coating; and (iv) an unloading station configured for unloading the coated high voltage line electrical insulator; and (c) an endless loop conveyor located within the single elongate shipping container configured for conveying the high voltage line electrical insulator through the plurality of stations (20, 22, 24, 26, 28, 30) within the single elongate shipping container, wherein the endless loop conveyor has an elongated circular path.