We have a 3 season room with French doors that open into the room. During the extremely cold weather, we close off this room so that we don't have to heat this area. The issue is that there is a very cold draft pouring in below the doors. What would be an appropriate solution to seal this area? The room is carpeted and the adjoins room is hardwood. I also would like to seal the area where the doors come together as well. I will post s pic to show the configuration.