Plumbing a Basement Bathroom Requires More Planning


Unlike most basic plumbing, adding a bathroom to the basement is a little more challenging. The basement being below ground or the main house means that the plumbing needs will be different. To ensure that everything is done according to standards, more planning and work will be needed. The most important and possibly the most difficult aspects of basement plumbing is the drainage, waste and venting system.

Things to Be Aware of

The location of the sewer line is an important element of basement plumbing. If the line is deep below the basement, then you can depend on gravity to help you with waste disposal. If the line is not deep enough, you will have to consider putting in a sewer ejection system. Depending on space and budget, you can go with an above ground or below ground system.

In addition, the size of the pipes is also important. If they are too small, you will need to replace them with pipes of a more suitable size. To determine the depth of the sewer line, ask your local public works or similar department for the information.  You also need to speak to the building authority about zoning codes and building regulations as these can affect the work you plan on doing.

Once you have this information, then it is time to plan out the new bathroom. Look at the space and determine the layout, that is, where will the toilet, bath/shower and sink will be located. If you plan on doing the job yourself, mark out your layout on the floor with spray paint or a marker. Next, decide on the type of bathroom you want to add. This can be a half bath or a full bathroom with shower or bath and the toilet and basin. The type of bathroom will also depend on the size of the space available and what you can afford. If you go with a shower, based on the fact that basements tend to be damp, consider putting in a dehumidifier or a fan ventilation system.

You will also need to decide on the type of toilet. For the toilet, your options include an upflushing unit or a pressure-assisted unit. An upflushing unit does not require any excavation. It works by feeding waste upwards to link with the existing sewer system. The pressure assisted toilet prevents clogging by forcing waste through the sewer line with the use of air pressure.

One good bathroom positioning tip is to try to position the basement bathroom directly below an existing bathroom on the upper floor. This will make plumbing connections much easier to do. As you see, with some planning, installing a bathroom in the basement is a little challenging but doable.

Basement Bathroom Remodeling in the Washington, D.C. Area

D&M Enterprises is located in Gaithersburg, MD, but we offer remodeling and home improvement services throughout northwest Washington, D.C. and several surrounding areas. Give us a call at 301-948-0100 if you’re in the greater Gaithersburg area and would like to schedule a consultation for bathroom remodeling.

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