How To Add A Bathroom In Basement Without Breaking Concrete

It is convenient to have a bathroom in the basement, especially when your family spends lots of time in it. Also, adding a bathroom in the basement will add value to your home. The basement itself is extra space that you can change into a guest bedroom or game room. If you had added a bathroom in the basement ahead of time, the remodeling would be much easier. And you won’t have to climb stairs up and down because of nature calls. Therefore, it is worth having a bathroom in the basement. If you would like to have your bathroom in basement without breaking concrete, here are some good tips.

Bathroom In Basement Without Breaking Concrete
Table of Contents

    Can I Install A Bathroom In My Basement Without Breaking Concrete?

    Adding a bathroom in your basement is a great project. Whether you can build a bathroom without breaking the concrete depends on whether your basement was set up with the necessary systems like drainage and plumbing vent. If so, these will allow your basement bathroom installation to be done more easily. If not, you will have to break up a portion of concrete to add the drainage pipeline. However, if you apply an up-flush drainage system, you can add a bathroom containing a shower and a toilet without making any damage to the concrete.

    Pros And Cons Of Installing a Bathroom in Your Finished Basement

    While adding a bathroom in the basement without breaking concrete can be useful to bring an easier life, you will face various challenges during installation. There are some pros and cons you should think about before beginning the project.


    • Bring Convenience

    Adding a bathroom in your basement would definitely make you have an easier life! Your family and guests will not have to go upstairs to use the restroom. Especially for your guests, they will feel comfortable having their privacy and not disturbing your family.  

    • Boost Home Value

    The basement can also be part of your living space with your family. Adding a bathroom in will make it a livable space. You can even convert it into a game room, home gym, a family movie theater, and more to your home. In this case, it will be great to have a bathroom in the basement.


    • Take Up Space

    Before building the bathroom, you have to consider whether you are really in need of it. Some basements are not large to add a bathroom in. You should keep in mind that a certain space would be sacrificed for a bathroom if you decide to add.

    • Not Friendly To DIY

    The preparations of installing a bathroom in the basement would be a tough task. You need to consider the drainage system, plumbing, and lots of other aspects.

    How To Add A Bathroom In Basement Without Breaking Concrete?

    Before installing the shower or toilet, you need to figure out which drainage system will you apply. There are two situations that exist in your house, and therefore, there are two drainage solutions.

    Situation1: Drain Provisions Exists In Your Basement

    Before beginning the project, you should make sure whether you have plumbing stub-outs in your basement floor. If there are existing plumbing stub-outs, you can take advantage of them. The installation of stub-outs makes the water and gas pipes accessible. The sink and shower drainage system in your basement bathroom will base on this.

    Situation2: No Stub-Outs In Your Basement

    If your main drain is above your basement level, and you don’t want to break any concrete, you will need to apply an up-flush drainage system. The up-flush drainage system can help remove sewage from your upper main drain.

    How To Install A up-flush System?

    • Support Flange And Pump 

    To install an up-flush system in your bathroom, the support flange and pump should be set to help pump the sewage up to the main drainage system. Before you seal up the up-flush unit, test to ensure the pump work as desired. After all of these are done, you have finished the installation of the up-flush discharge unit.

    • Test The Pump

    Connect the discharge pipe to the drain pipe and make them a joint structure with the floor drain or 5-gallon bucket. Then you need to set a dedicated electrical outlet to allow the pump to work. Activate the up-flush system and make the tank fill with water to test if the pump would discharge excess water when the water reach the correct level.

    • Backflow Device

    In order to make sure the wastewater would not flow back into the unit, you should connect the discharge pipe with the backflow device. With the backflow correctly set, you can connect the basement up-flush system with the main system in your house.  The backflow device, discharge pipe, and drain pipe will work together to run the sewage into the main drain finally.

    • Central Tanks

    Sewage from toilets, showers, and sinks will be run in the central tanks behind them first. Then the pump will work to pump the sewage into the main drainpipe and discharge them out to the main sewer in the end.

    How To Install A Toilet?

    After finishing the up-flush installation, you can begin to install the toilet. To make sure of better drainage, the toilet should be set in the upper place than the tank behind it. Then connect the toilet to the cold water supply line to allow the toilet to flush. Also, remember to assemble a toilet paper holder near the toilet.

    How To Install A Shower?

    • Build Shower Base

    For better drainage, you need to elevate the shower base, or that the up-flush system would not work. The standard slope that is necessary for a water drainage pipe is 1/4 inch per linear foot of pipe. This leads to the need for a kick of 6 inches to enter the shower cubicle. You can buy a shower base or make it by yourself.

    • Install The Shower

    If you have had stub-outs, you need to install the pipes to connect with them. Then you can install the basement shower that drains through the existing drain provisions. If you choose to install a flush-up system, you need to place the shower as close as possible to the up-flush drainage system to make sure of better drainage.

    Does A Basement Bathroom Need An Exhaust Fan?

    To make your basement bathroom last long, an exhausted fan in the bathroom is needed. If you intend to install one, you have to install another system–the vent system. You need to connect the vent pipe with your main vent system and switch on extra power for the ventilation system.

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