All the cold air from my AC flows through a stairwell and into the basement. The entrance to the basement is the through a doorless opening on the 1st floor.
I am planning to put up a curtain in that entryway to block the precious cold air from flowing down to the basement. I’m thinking of using a tension rod since I don’t care if there is an opening at the top of the curtain. only the hot air would flow through. However the bottom must be touching the floor and should seal off any cold airflow.
Would this method work? If so, is there a particular kind of curtain available with weighted bottoms or rubber bottom that can stop airflow?
Any insight would help! Thank you