I doubt anything will improve this until it warms up but there are so many knowledgeable people on here so maybe there is a solution.
The cement floor near a couple of my doors has heaved up making it almost impossible to close the barn doors completely. One of the doors is sticking so much that the boards are becoming damaged and the door won’t close completely. I try to use those two doors as little as possible and use plastic bags to seal the gap.
I could move the horses by using another door but they always get a bit difficult to handle in this cold weather when I change anything in their routine, plus it increases the distance to their field. The boys I am dealing with are quite large and I am a little old senior who can’t afford to get hurt. Any ideas or solutions?