A Guide To Installing A Basement Bathroom

The installation of a bathroom in the basement constitutes a major improvement to any home. Besides turning the basement into a livable space, it is also a key selling point that increases the resale value of your home. Moreover, a basement bathroom offers matchless convenience if you have a home office, playroom, or guest house below grade.

Also, you might be happy to find out that some basements already have underground plumbing in place. It might be necessary to add in some concrete and redirect a few pipes, but at the end of the day, you’ll have a fully-functional bathroom in your basement. Our guide on how to install a  basement bathroom will let you enjoy the above benefits without losing your mind.

The Planning and Design Process

The first step is to understand the relevant building codes and acquire the necessary permits. These vary from one location to another so find out the applicable rules for your locality to avoid hefty fines. Next, work on the design, preferably situating the bathroom below the existing above-grade bathroom. Doing so will allow you to take advantage of existing drainage lines and plumbing. Think about the lighting in relation to ceiling height. If the ceiling is low, choose recessed lighting fixtures. Consider the size and positions of all fixtures including the sink, vanity, bathtub, shower, and toilet.

Take Measurements and Mark

Next, take measurements and mark out the walls of the bathroom, toilet, and drain lines. At this point, you need to figure out whether your project will involve breaking the concrete or will simply use aboveground solutions. If you have to break the concrete, seek the assistance of a professional plumber to plan the layout so as to prevent future problems such as clogging. Aboveground solutions include up-flushing toilets, macerating toilets, and composting toilets, all of which sit on the floor. Though their upfront cost is relatively high, they are relatively easy to install and service. These options simply require marking the position where the toilet will sit and work on the drainage system behind the walls.


The next step is the installation of drainage pipes and piecing them together to create a functional drainage system. Whether you opt to break the concrete or go for aboveground toilets, the installation process requires professional help. An expert will also ensure that the installation adheres to code and will not have leaks or drainage problems. Before installing vertical drainage pipes and vents, install the bathroom walls, adhering to the previously marked locations. Attach the vertical pipes and vents to the wooden framework for proper support.

Electrical Wiring, Flooring, Drywall, and Fixtures

The next step would be to add the electrical circuits to make lighting and venting possible. Once underground work is finished, some necessary concrete work is done by the experts. A separate electrical circuit and a GFCI outlet must also be added in the bathroom to prevent electrical fires in this area.

The project continues with a thorough inspection and the installation of drywall for the ceiling and walls. Tiles on the floor are also added at this stage. Next, the ceiling and the walls are painted to protect the drywall from moisture and finishing touches are added such as bathroom fixtures, trimming the borders around the bathroom door, etc. When the project is completed, your bathroom will be fully-functional and looking gorgeous!

Why You Need Professional Help to Add Bathroom to Basement

Following the above steps on how to add a bathroom to the basement may seem straightforward, but there is a lot more to it than meets the eye. With the services of a professional basement contractor, you will have a low-stress, successful project that passes inspection with ease. You will also avoid the hassle and high cost of dealing with potential blockages and leakage from time to time. Do it right the first time with a seasoned expert.

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