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Bathroom faucet installation and repair repair guide
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Bathroom Faucet Installation and Repair

Turn off water supply valves under sink

Bathrooms
Intermediate
180 minutes
2/2/2026

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Tools Needed

  • basin wrench
  • adjustable wrench
  • pliers
  • flashlight
  • pipe thread sealant

Parts & Materials

Available from multiple retailers

AmazonUnavailable
Home DepotMore buying options coming soon
Lowe'sMore buying options coming soon

Available from multiple retailers

AmazonUnavailable
Home DepotMore buying options coming soon
Lowe'sMore buying options coming soon

Available from multiple retailers

AmazonUnavailable
Home DepotMore buying options coming soon
Lowe'sMore buying options coming soon

Available from multiple retailers

AmazonUnavailable
Home DepotMore buying options coming soon
Lowe'sMore buying options coming soon

Available from multiple retailers

AmazonUnavailable
Home DepotMore buying options coming soon
Lowe'sMore buying options coming soon

āš ļø Safety First

  • Turn off water supply before starting work
  • Use flashlight to see connections under sink
  • Have bucket ready to catch residual water

    • šŸ”§ Tools Needed

  • basin wrench
  • adjustable wrench
  • pliers
  • flashlight
  • pipe thread sealant

    • šŸ“¦ Materials

  • bathroom faucet
  • supply lines
  • shutoff valves
  • plumbers putty
  • Teflon tape

    • šŸ“‹ Step-by-Step Instructions

    1. Turn off water supply valves under sink


    2. Disconnect old supply lines from shutoff valves


    3. Remove old faucet by loosening mounting nuts


    4. Clean sink surface and faucet mounting holes


    5. Install new faucet gasket or apply plumbers putty


    6. Insert new faucet through sink holes from above


    7. Secure faucet with mounting nuts from underneath


    8. Connect new supply lines to faucet and shutoff valves


    9. Turn on water supply and check for leaks


    10. Test faucet operation and adjust handle settings


    11. Clean up excess putty and apply finish touches


    šŸ’” Pro Tips

  • Use basin wrench for hard-to-reach mounting nuts
  • Replace supply lines when installing new faucet
  • Apply pipe thread sealant to threaded connections

    • āŒ Common Mistakes to Avoid

  • Over-tightening connections causing damage
  • Not using proper sealant on threaded connections
  • Forgetting to turn off water before starting

    • šŸ” Troubleshooting

    Faucet leaks at base

    *Cause:* Loose mounting nuts or failed gasket

    *Fix:* Tighten mounting nuts or replace gasket


    Low water pressure

    *Cause:* Debris in aerator or supply line issues

    *Fix:* Clean aerator and check supply line connections


    Faucet handle hard to turn

    *Cause:* Worn cartridge or mineral buildup

    *Fix:* Replace cartridge or clean internal components


    ā“ Frequently Asked Questions

    Q: Can I install any faucet on my sink

    A: Check hole configuration - single hole, widespread, or centerset


    Q: Do I need to replace supply lines

    A: Recommended when installing new faucet for reliability


    āœ… Checklist

    ā˜Turn off water supply
    ā˜Disconnect old supply lines
    ā˜Remove old faucet
    ā˜Clean sink surface
    ā˜Install faucet gasket
    ā˜Mount new faucet
    ā˜Connect supply lines
    ā˜Turn on water supply
    ā˜Test operation
    ā˜Check for leaks

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