How to Rough Plumb a Basement Bathroom

Step-by-Step Guide

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   Step 1: Gather your materials: Metal detector Scratch paper Tape measure;

   This will be a vertical cast iron pipe, more than likely 4" in diameter. , This is the pipe in the ground that the new toilet and sink will flow in to. , A crude drawing may be helpful to visualize where the you want the new sink and toilet in relation to the existing pipe.
   
   This will also help you when you measure out the length of PVC you'll need. , It is recommended that it be a 45 degree PVC pipe that attaches to the existing cast iron to help with the flow of waste.
   
   Be sure to note that the PVC setup will vary depending on where the sink and toilet will be placed. ,,, Hanging a plastic curtain around the work area can help contain dust! , This can be done with a jackhammer which can be rented at a home improvement store.
   
   Safety glasses should be worn when using tools! ,,,, Use PVC primer and cement to fasten the sections together Due to chemical fumes, make sure the area is well ventilated! , This can be done with a high speed angle grinder The angle grinder will make sparks, be sure to wear safety glasses! , Make sure that there is enough PVC on either side of the wye so that the band-coupling has enough of both PVC and cast iron pipe to attach to! Cleaning the cast iron pipe makes for a tighter seal! ,, Make sure the new pipe has a slope of at least 1/4" every foot flowing into the cast iron pipe. , 4" of concrete so that just the pipes that the toilet will sit on and the sink will connect to are exposed. ,
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   Step 2: Identify the main waste stack that goes from the upstairs bathroom to the sewer.

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   Step 3: Detect the cast iron pipe leading from the main waste stack to the sewer using a metal detector.

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   Step 4: Identify where you want the sink and the toilet to be placed in the basement.

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   Step 5: Plan the location of the new PVC pipe that will connect the new toilet and sink to the cast iron pipe in the ground.

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   Step 6: Prepare your materials: Box cutter knife/chisel Safety Glasses Chalk/tape Jackhammer Bucket/spade Plastic curtain

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   Step 7: Remove any tile/carpeting/etc to expose the concrete above the spot you chose to place the new pipe.

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   Step 8: Draw an outline in chalk or tape on the concrete floor where you will need break it

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   Step 9: based on where you decided the new toilet and sink will go.

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    Step 10: Break the floor to expose the necessary section of the cast iron pipe as well as the path that the new pipe will lay for the toilet and sink.

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    Step 11: Clear out the concrete debris and dig out the sand so the new pipe has a place to lay.

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    Step 12: Collect the needed materials: Necessary sections of PVC as determined in Part 1 PVC primer and cement Saw (hand or electric) for cutting PVC into shape Angle grinder Band-seal couplings and screwdriver

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    Step 13: Purchase the necessary length of PVC pipe that the new toilet and sink will flow into.

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    Step 14: Connect the pipe together in the shape that fits your design.

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    Step 15: Cut an appropriate section of the cast iron pipe so the new PVC will fit in it.

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    Step 16: Attach the new PVC to the cast iron with band-seal couplings.

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    Step 17: Prepare the materials you'll need: Bags of sand Bags of Ready Mix concrete Mason trowels

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    Step 18: Cover over the pipe over with sand.

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    Step 19: Cover over the sand with approx.

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    Step 20: Smooth out the concrete with the mason trowel so that new flooring can be added later.

Detailed Guide

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