Venting a first floor bathroom fan
I had this post in HVAC for theee days. Got 89 views, but no response so I decided to repost it here.
Venting a first floor bathroom fanWhen our house was built no bathroom fans were installed. Now, I have a few questions before beginning this project.
1. I can run the duct work between the ceiling joists between the first and second floors and vent it to the outside, but will have to cut through the sill plate? to do this. Will this be a problem? Structural concerns, etc. Tough making duct work connections, too as, once the existing fixture is removed, I will have to reach in over the shower unit to drill the hole, make the connections, etc. But my main concern is whether it's ok to make this cut.
2. Except for one joist, I could go the other way. Now I know I shouldn't cut a 4 inch hole in any joist, but I was thinking about moving the light fixture (which will be replaced with a light/fan unit) over so that it is on the other side of the joist. Then, of course, I will still have to cut a 4 inch hole to the exterior through the sill plate which is running parallel with the joists. This would make connections, etc much easier since it will be a very short run less than 2 feet. Structurally, is this unwise or is the the same as making the cut in the sill plate (don't know if that's the right name) which is perpendicular to the floor joists.
Thanks in advance for any help you can give me with this