My vanity was roughed in with the waste outlet offset to where the sink ended up, as the vanity choice hadn't been made at the time.
As a result, I need to get the trap outlet over to the waste pipe. I want to add a 45 to the waste outlet and then plumb the p trap into that.
Once the waste pipe is in the wall, it makes a 90 over to the waste/vent pipe. If I add a 45 under the sink, do I need a cleanout?