How to Clean a Corrugated Drain Pipe How to Clean a Corrugated Drain Pipe

What You'll Need
Hand Tools (Screwdriver, Hammer, etc)
Hot Water Supply
High Pressure Hose Nozzle
Drain Snake
Drain Cleaner

Corrugated drain pipe can either be your best friend or your worst enemy. Corrugated pipe has the significant benefit of being flexible, and so seems an ideal solution for routing drain pipe at awkward angles, avoiding ninety degree angles, and being able to configure pretty much any type of drain set up that is needed. The down side of corrugated drain pipe though is that the ridges that make it flexible also offer the prime location for buildups to happen, and so they tend to become clogged much more quickly than many other types of drain piping. You can find corrugated drain pipe to use just about everywhere around the home, from under-sink traps to piping used to route water from gutters and downspouts on the exterior of the home. Here you will find information on how to clean the corrugated pipe.

Step 1 - Disconnect the Drain Pipe

You will first need to disconnect the drain pipe from the drain. Use basic hand tools to do this. In the case of an drain pipe underneath a sink, it is likely secured with plastic or PVC tightening nuts that can be released by hand. In the case of a corrugated drain pipe that is affixed to your downspout on an external drain system, this will likely be secured with a steel band, which will require loosening some screws with a screwdriver to remove the strap.

Step 2 - Remove Visible Clogs

If possible, remove any visible clogs with your fingers or a pair of needle nosed pliers. If you are able to completely remove the drain pipe from it's surrounding connections, holding it straight up in the air and shaking or thumping it may dislodge clogs. Make sure you do this outside or over a bucket so that the debris doesn't make a mess.

Step 3 - Clean the Drain Pipe

Clean the drain pipe by running very hot water through it and spraying around the inside of the pipe with a high pressure nozzle. You may be able to connect a garden hose to your kitchen sink for hot water supply. The hot water will loosen built up deposits of sludge and dirt. Using the snake, scrub the inside of the drain pipe to completely remove any left over material.

Step 4 - Alternate Methods

It isn't always an option to completely remove the drain pipe from it's surrounding fittings. If this is the case, try using a liquid drain cleaner. Check the label to ensure that the liquid drain cleaner will not damage the pipe materials, and that it is safe to use with your existing sewage system (for example, if you are using a septic system). Never combine drain cleaners.

Step 5 - Reassemble

Reassemble the drain in the reverse order that it was dismantled. Run water through it to ensure that there are not leaks.

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