Since nobody else has replied, I don’t think there is at the moment. My suggestion is to either have no door, and just break down your stone wall when you need to leave, or build your door on a tile where the elemental can’t path to. For example, you could have a tile of deep water between the outside world, and your door. You can swim through it, but the elemental -probably- can’t. You can get really elaborate and create a hall of traps with a sidesection where you can swim through to avoid the traps, but the monster will have to shamble down the hall, getting mashed.