But that doesn’t mean you can’t do it. How about tiling your basement bathroom shower like a wild man? But it doesn't have to seem so daunting. Grab a Fat Tire because this post is for you. Often the hardest part about plumbing is the rough-in. This article will get you through the initial stage of this project, the rough plumbing. Looking to finish off your basement and include a bathroom? Get the rough-in right, and you are 90 percent of the way there. A bathroom in the basement adds a lot of value to a finished basement. Rough In Plumbing. Interested in learning more about PEX plumbing and its advantages? The last step of connecting the sink, toilet, or tub is almost superfluous. Adding a bathroom to your basement can be a fairly long and complicated process. Adding a basement bathroom is a big, complicated project. Welcome my friend. How to Rough Plumb a Basement Bathroom. Here's how to plumb the bathroom yourself and save at least $1,000 on plumbing costs. There are generally accepted plumbing rough …