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How to Repair Vitrified Clay Sewer Pipes

Vitrified clay sewer pipes have proven to be long-lasting. VCP for short, the vitrified pipe has a high resistance to sulfuric acid that is created by hydrogen sulfide--commonly found in household sewage. The main problem with VCP is weakness around the joints. Tree roots can work their way through the seams of the joints, which over time causes blockages. The pipes can also break if knocked by heavy objects, but fixing the clay pipes doesn't have to be an expensive or time-consuming operation.

Step 1

Cut through the VCP sewer pipe six inches on each side of the damaged area--use a cut-off saw. 

Step 2

Slip a flexible rubber coupling over one end of the cut VCP pipe.  Push it onto the pipe to the extent that the other end of the flexible coupling is in position to be pushed onto the other VCP cut.

Step 3

Pull the flexible pipe back the other way so that both VCP cuts are equally covered by the flexible coupling.  Tighten the metal straps on each end of the flexible coupling, using a screwdriver. Run water down the sewer line to make sure that there are no leaks.  If there are, tighten the strap screws until the leak stops.

About the Author

Steve Sloane started working as a freelance writer in 2007. He has written articles for various websites, using more than a decade of DIY experience to cover mostly construction-related topics. He also writes movie reviews for Inland SoCal. Sloane holds a Bachelor of Arts in creative writing and film theory from the University of California, Riverside.