Fixing a leaky sink P-trap

Fixing a leaky drain P-trap is straightforward and typically involves tightening connections, replacing worn-out washers, or sealing small gaps. Here’s how to fix it:

1. Gather Tools and Supplies

• Bucket or bowl

• Adjustable wrench or pipe wrench

• Replacement washers or O-rings (if needed)

• Plumber’s tape (Teflon tape)

• Plumber’s putty or pipe sealant (optional)

• Rag or sponge for cleaning

  
  

2. Identify the Source of the Leak

• Dry the area: Wipe the P-trap and surrounding pipes dry with a rag.

• Run water: Turn on the faucet and observe where water leaks from:

  • Joint leaks: Usually caused by loose connections or worn washers.

  • Cracked pipe: Indicates the pipe or P-trap needs replacement.

    
    

3. Tighten Connections

• Use your hands or an adjustable wrench to gently tighten the slip nuts on either end of the P-trap.

• Avoid over-tightening, as this can damage plastic fittings or strip threads.

  
  

4. Inspect and Replace Washers or O-Rings

1. Disassemble the P-trap:

   • Place a bucket under the trap to catch any water.

   • Loosen the slip nuts and remove the trap.

2. Inspect washers:

   • Look for worn or damaged rubber washers or O-rings at the connection points.

3. Replace washers:

   • Install new washers of the correct size and type.

   • Ensure they sit snugly in their grooves.

     
     

5. Seal Threaded Connections

• Apply plumber’s tape:

  • Wrap Teflon tape around the threaded ends of the pipes before reassembling. This helps create a watertight seal.

• Use plumber’s putty or sealant (optional):

  • Apply a thin layer to the threads for added security.

    
    

6. Check for Cracks or Damage

• Inspect the P-trap and connecting pipes for cracks or splits.

• Replace the P-trap if any damage is found, as repairs are usually unreliable for cracked pipes.

  
  

7. Reassemble and Test

1. Reattach the P-trap and tighten the slip nuts by hand, then use a wrench to snug them up slightly.

2. Run water and check for leaks at all joints and connections.

3. If leaks persist, double-check washer placement and connection tightness.

   
   

8. Replace the P-Trap (If Necessary)

• If the leak cannot be fixed, purchase a replacement P-trap of the same size and type.

• Remove the old trap and install the new one, following the steps above.

  
  

9. Prevent Future Leaks

• Avoid overtightening connections.

• Periodically inspect the P-trap for signs of wear or damage.