Replacing Deteriorating Cast Iron Pipes

Until PVC and ABS appeared, cast iron was the utilized standard in drain and vent systems. Repairing deteriorating cast iron pipes is not difficult but it is hard to do and will require special attention. You will need a special reciprocating saw or there is the alternative of renting a cast-iron snap cutter. In most cases damaged cast iron pipes are replaced with PVC as it is easier to handle and lighter when compared with cast iron.

One step that is very important is supporting the cast iron pipe as you are replacing the deteriorating part. You can attach riser clamps above and below the area that is to be removed. Rest them securely on the floor or chain them to ceiling joists. Clean the drain line and flush the toilets in order to do so. No house fixtures must be used during the time spent replacing the cast iron pipe and keep in mind that waste is a biohazard so you will need to change clothes and wash your hand properly once you are done.

As with any replacing job the first step stands in shutting off the water supply. After this you need to mark the pipe. You can use chalk and your markings need to be at around 6 inches above and below the area that is deteriorating. Now cut off the pipe! The chain visible that comes with the cast-iron cutter needs to be wrapped around the pipe and align the cutting wheel to the chalk line you drew earlier. Now cut and remove the section after both ends have been completely cut. The next step is cutting the replacement pipe. Cut a section that will be 1 inch shorter than the one you are to replace and place the coupling band. A banded coupling needs to be slipped with a neoprene sleeve on both sides of the cast iron pipe. Also, pay attention to the cast iron pipe as it needs to be seated tightly against the rubber separator ring that is sleeve molded. Now you need to expose the ends of the deteriorating pipe after you fold back the sleeve on both sections. Align the PVC pipe with the remaining cast iron pipe and roll the sleeves over the plastic pipe. Bands need to be slid over the sleeves and tightened by using a socket and ratchet wrench or a screwdriver until snug. When the pipe is secured just remove the riser supports added at the start of the operation and start testing the replacement area. Just run water through the drain system and look for any possible leaks. The bands need to be tightened as much as necessary and when no more leaks appear you can congratulate yourself on a job well done.