How to fix a leaking PVC or CPVC water pipe joint

Materials Needed:

- Replacement PVC/CPVC coupling (same size as the existing pipe)

- PVC/CPVC primer

- PVC/CPVC cement (glue)

- Pipe cutter or hacksaw

- Measuring tape

- Utility knife

- Safety glasses

- Wrench or adjustable pliers

- Rags

- Sandpaper (80-grit)

Step 1: Turn off the Water Supply

Locate the water shutoff valve controlling the water flow to the leaky joint and turn it off. This is usually located near the water meter or under a sink.

Step 2: Cut the Pipe

Use a pipe cutter or hacksaw to cut the PVC/CPVC pipe on both sides of the leaking joint, leaving enough space to insert the new coupling.

Step 3: Remove the Damaged Joint

Use a utility knife to score the old PVC/CPVC cement around the joint. Be careful not to cut the pipe. Then, use a wrench or adjustable pliers to loosen and remove the old coupling and the damaged section of the pipe.

Step 4: Clean the Pipe Ends

Use sandpaper to remove any remaining PVC/CPVC cement and burrs from the cut pipe ends. Ensure the ends are clean and smooth.

Step 5: Apply Primer

Apply PVC/CPVC primer to the inside of the new coupling and the outside of the pipe ends. Primer helps the cement adhere better. Let it dry according to the product instructions.

Step 6: Apply Cement

Apply a thin layer of PVC/CPVC cement to the inside of the new coupling and the outside of the primed pipe ends.

Step 7: Assemble the Joint

Quickly insert the primed pipe ends into the new coupling, ensuring they're fully seated. Rotate the pieces slightly while inserting them to ensure even distribution of the cement.

Step 8: Secure the Joint

Hold the assembled joint in place for a few seconds until the cement sets. Wipe off any excess cement with a rag.

Step 9: Let It Dry

Allow the cement to cure for the time recommended on the product label before turning on the water supply. This can vary from a few minutes to several hours.

Step 10: Turn On the Water

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