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Tips On How To Plumb A Basement Bathroom

Nowadays, many home owners are building bathrooms in their basement area. They consider that having a basement bathroom can bring more convenience and make the living area more versatile and accommodating. Installing the plumbing and furniture the basement bathroom can be quite difficult. You will face many requirements and challenges when installing the plumbing for the basement bathroom. Here are some simple tips on how to plumb a basement bathroom.

If you are wondering on how to plumb a basement bathroom, you need to prepare some tools including a hack saw, tee coupler, water valve, piping, tee junction, drain line, wiring, wire cutter, wire stripper, and GFCI outlet. Before starting any installation process, you need to turn off the water supply. You need to determine the location of the hot and cold water line. Make sure the line is close to the new bathroom. If you are planning to install the plumbing system for the new bathroom, you just need to locate the lines beneath the overhead bathroom. However, if you are remodeling the existing bathroom, you need to find the closest water lines to the new construction. It will limit your material needs and make the installation as easy as possible. You need to cut into both water lines before inserting the tee joints. The tees allow you to continue the piping system to the desired location. You can then bring the water supply lines to the new location for the sink. You should install a valve at the end of every water line. It is recommended for you to install the second tee on the water line which faces towards the toilet area.

How To Plumb A Basement Bathroom

Connect the basement bathroom plumbing to the existing drain and vent lines in the floor and ceiling.

Many tips on how to plumb a basement bathroom recommend you to install a pipe from the cold water tee to the area of the new toilet and install a valve at the end of the line. Here you can apply a flex hose to the toilet. You need to cut into the closet sewer drain line before installing the tee junction for the toilet drain. It needs to be done closest to the new bathroom. The system is working to pump the waste water up from the toilet. Installing the less vertical distance and shorter travel distance is more recommended since it requires less work by the pump. As the result, your system will operate more efficiently.

If you are planning to install the new toilet in your new bathroom, you might choose the up-flush model which comes with holding tank, electric pump, and check valve. It is important for you to reduce the waste water from flowing back to the unit. You can also find some models which are include inlet ports for sink drains and inlet ports for tubs or showers. The system allows you to have a single pump for the entire bathroom. As the result, you will get an easier installation and a less difficult process. When the toilet is installed, you need to connect the flex hose to the water inlet. Next, you need to install the drain line and plumbing to the overhead tee junction. Install the drain line starting from the sink to the up-flush toilet and you are done. When you are wondering on how to plumb a basement bathroom, you should check the power supply. You might need hard-wire the pump or install the outlet. It depends on your requirements.

Here are step by step picture on how to plumb a basement bathroom:

How To Plumb A Basement Bathroom

Break through the concrete to verify that the main line is where you think it is and that it’s deep enough to allow adequate downhill slope in the new drain lines.

How To Plumb A Basement Bathroom

Make sure you have sufficient slope for the waste line.

How To Plumb A Basement Bathroom

Cut cast iron pipe with a snapper.

How To Plumb A Basement Bathroom

After completing the trenches for the new lines, cut into the main line so you can install a Y-fitting. Our tie-in point was near an existing hub, so we cut out the hub. Make sure no one runs water (or flushes!) while the line is open.

How To Plumb A Basement Bathroom

Slip rubber couplers onto the main line, insert the Y-fitting, slide the couplers over the joints and tighten the bands. Then plug the inlet and grant your family the freedom to flush again.

How To Plumb A Basement Bathroom

The location of the drains and vents is critical—check and double-check your work before you glue joints together. Determine where the exact location of the shower drain will be after the walls are framed. Cap open pipes to keep sewer gas out of your home. Don’t bury the lines until the building inspector has approved your work.

How To Plumb A Basement Bathroom

Backfill the trench with soil and screed 3 in. of concrete over it. Pack the soil firmly so it won’t settle later. Smooth the concrete with a steel trowel.

How To Plumb A Basement Bathroom

After framing the bathroom walls, assemble the vent lines. We ran our vent lines below the floor joists and later framed a lower ceiling to hide the pipes.

How To Plumb A Basement Bathroom

Glue short sections of plastic pipe into a T- or Y-fitting, cut out a section of the existing vent pipe and make connections with rubber couplers.

How To Plumb A Basement Bathroom

Set the shower pan in place and measure from the walls to determine the exact location of the drain. Assemble the drain and trap without glue. Then set the pan in place again to check your work before you finally glue up the fittings.

For more detail steps, you can follow the instruction here: http://www.familyhandyman.com/DIYProjects/Plumbing/Bathroom-Plumbing/how-to-plumb-a-basement-bathroom/Step-By-Step

Image: familyhandyman.com, bestsubcontractor.com

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