the present invention a bunker sealing system for use with a horizontal style bunker , the bunker sealing system includes a bunker silo for storing silage therein , a cover for selectively covering and sealing silage ; wherein the cover being comprised of liquid fillable bladders . the bunker sealing system further including cover handling equipment including a spool for spooling and unspooling the cover onto and off of a cover spool such that the penetration of water and air into silage is minimized and further includes a cover carriage for supporting , the spool including wheels cooperatively rolling along top rails mounted on top of bunker walls , such that the carriage spans between two bunker walls and is rollably moveable longitudinally along the walls .