Like trying to dig a hole in a lake. Is this done in the industry? I have a client who wants me to replace the fans in their bathrooms with suspended ceilings (2x4 grid and acoustical tile). I intend to cut the doors up an inch above the floor but what keeps the air above the suspended ceiling, above the ceiling? It seems like the air would easier come through the ceiling and/or over the tops of the walls. Then under the door.
A very, very high percentage of restroom walls either run to the floor or roof above and / or have a drywall ceiling above any suspended ceiling. Otherwise it would be like having a restroom in the center of a low partition open concept office area. The exhaust fans must be ducted through the ceiling above the suspended ceiling and to the outside of the building. The exhaust make up air will come in the room at your door undercut.
