Do you have to move a toilet drain pipe?

This is a lot of work. If you do it externally the main problem (which is more of an aesthetics problem rather than a plumbing problem) is that you will have a pipe showing. Of course this is less work, but the exposed pipe may be an eyesore.

Can a toilet be moved away from the vent stack?

While usually this can be managed, it can limit the distance of the new toilet location, since the toilet needs to remain close enough to the vent stack or main drain to accommodate the necessary slope.

Is it necessary to move toilet during bathroom remodel?

During a bathroom remodel, maintaining the bathroom’s basic footprint is essential to controlling costs and mess, as well as keeping on schedule. But sometimes a bath remodel calls for a change in the layout. Moving the toilet is one of those changes in the bathroom layout that is sometimes necessary.

What kind of fittings do you need to move a toilet?

For example, you will need to use PVC fittings if you are connecting to a PVC waste vent stack. Depending on where your toilet is being moved to, the precise drain fittings needed may vary. Be prepared use additional PVC or ABS fittings as necessary to route the toilet drain to the vent-waste stack.

How big of a vent do I need for a bath LAV?

Both major plumbing codes in the U.S. permit a single basin lav to be roughed in with a 1.25” vent and a 1.25” trap. See IPC Table 709.1 or UPC Table 702.1. However, in this example, I’m going all 1.5 inches. Let’s follow this bath lav’s drain downstream. You’ll see the vertical to horizontal transition pictured below.

Where to put drain and vent lines in a bathroom?

Drain and vent lines must be positioned precisely, so you should install them before the supply pipes. It may be possible to simplify supply runs by moving a vent pipe over a few inches.