How to Replace a Section of Cast Iron Pipe Part 1

What You'll Need
Measuring Tape
Riser clamps
Snap cutter

One of the biggest problems with the cast iron pipe is that it tends to break or corrode. Once it is past a few years old, it can easily deteriorate so badly that it develops water leaks and other problems. One solution to this is to replace your old cast iron pipe with a section of PVC pipe. Most people do not feel confident enough to do this procedure for themselves, and choose to call in a plumber. However, if you have some basic home improvement skills, you should be able to replace the cast iron pipe with a PVC pipe on your own. Part 1 of this guide will show you how to mark out the section of pipe to be removed, use riser clamps to support the pipe and cut off the cast iron pipe with a snap cutter.

Step 1 - Mark the Pipe

Once you have found the area of the pipe which you need to remove, you should mark out the section with a piece of chalk. It might be a good idea to wrap a small piece of strong around the pipe so that you get an even cutting line. Once the line is marked, you are ready to cut out the pipe.

 Step 2 - Support with Riser Clamps

To support the pipe while you are cutting it, you need to apply riser clamps to the cast iron pipe. Press one of these to the area above the pipe, and then tighten it as firmly as you can in order to seal off the pipe. The riser clamp needs to be holding the pipe firmly, so it may cause a small dent in the pipe, but this is not as important as being able to hold the pipe firmly while you are cutting it. Once the clamps are in place you can start cutting the cast iron piping.

Step 3 - Cut the Pipe

Take the pipe cutter, and place it around the first mark on the piece of pipe. Press the jaws of the snap cutter closed, so that you feel the pipe being cut through the handle. You will be able to tell when the pipe is cut correctly. You should then take the pipe cutter to the other side of the pipe, and supporting it with your hand. press the snap cutter into place with only one hand. You may be able to trim the  edges of the pipe that you cut by using the snap cutter.  Trim the pipe which remains on the wall, or along the ground. You should then be able to remove the cut piece of pipe, and dispose of it.