I need to install a bathroom ceiling fan for a new bathroom I'm adding to my house. The only issue is that the floor joists are running perpendicular to where I need to run the 4'' aluminum duct pipe.
My question is do I just bore a 4'' hole through the joists?
Based on this answer from StackOverflow and this one it seems I can bore a hole 1/3 the depth of my joists (which are 11'') as long it's a joist (and not a beam) and the hole is no closer than 2inch from each edge... is that correct?
Thanks in advance!
Follow-up Note: This room is on the first floor, and there is a room above it (so venting through the attic isn't a possibility - as far as I know)