I am trying to add some sound proofing to my baby's room. In Canada, almost all interior doors have a gap at the bottom. I believe this is for the airflow of the central furnace/air conditioner. Since the baby room only has a vent out, is there any effect on the central air airflow when I seal the gap at bottom of the door?
Just thinking if I seal it, that will mean the room will have a hard time getting air out when the furnace/air conditioner is running.