I have an unheated back stairway and would like to install a space saving hanging door but need it not to be drafty. How do you do this? Want to maximize the usable space of the kitchen with the removal of the standard swing door.
Barn doors hang free of the frame and there is about a 1/2" gap. I do not know of any weatherstripping solution that would not be an obstacle or quickly get worn out. Add a space heater behind the door to stop the downward convection current perhaps? Use an accordion door?
Install a tight fitting door at the top of the stairway ?
You can't always want what you get.
Sliding doors by their nature are hard to seal well and with any wear or warpage lose that sealing quickly. That's why most doors swing- it's a proven and workable solution. If the current door swings into then kitchen you could reverse the swing outward although that too will entail a few problems. Those are easier to solve than trying to make a slider seal and stay that way.