Bath and sink tap replacement project guide scene with normal-height basin, exposed pipework and HIP Toolbox colour tools

Project Guide: Replacing Bath or Sink Taps

Difficulty 6/10
Time Half day
Tools Basin wrench / spanners / grips / towel
May need a pro Plumber if isolation valves fail

Replacing taps can transform a basin or bath, but old back nuts, poor access and missing isolation valves can make it fiddly. Plan the access first and do not start unless you know how to shut off the water.

Difficulty, Time and Cost

Difficulty: Intermediate. Time: One to three hours. Cost: Tap cost plus connectors or valves.

Tools and Accessories

  • Basin wrench or tap spanner
  • Adjustable spanner and grips
  • Towels, bowl and work light
  • Flexible tap tails or connectors if suitable
  • Replacement washers and isolation valves if needed

Prep and Safety

Confirm hot and cold isolation before undoing anything. If there are no isolation valves, consider fitting them or using a plumber. Check whether the new tap suits your pressure system.

Step-by-Step

  1. Turn off hot and cold supplies and open the taps to drain.
  2. Undo tap connectors and back nuts carefully.
  3. Clean the tap hole and remove old sealant.
  4. Fit the new tap with its supplied seal.
  5. Reconnect supplies without twisting flexible hoses.
  6. Turn water on slowly and check all joints.

Common Mistakes

Do not kink flexible hoses or overtighten compression fittings. Do not mix up hot and cold. Do not rely on decorative sealant to stop a leak underneath.

Finish and Maintenance

Check for drips after the tap has been used hot and cold. Keep the fitting instructions in case cartridges or aerators need replacing later.

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