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CosmeticCommon in JanRecommended trade: Bathroom Fitter

Sink Waste Slow to Drain

Water takes a long time to drain from the bathroom sink, sometimes backing up when running the tap.

What Is Causing This?

  • 1Hair and soap scum blocking the waste pipe
  • 2Pop-up waste mechanism stuck or blocked
  • 3Partial blockage further down the waste run

How Urgent Is This?

Cosmetic

This is a cosmetic issue. It is not causing damage and can be addressed in your own time.

What Needs to Be Done

A bathroom fitter or plumber will clean out the waste trap, remove any blockage, and check the waste pipe run for partial obstructions.

How Much Will It Cost?

£1,450 – £4,550

National average estimate

Labour: £850 – £2,125 | Materials: £600 – £2,425

Enter your postcode for a local price estimate

Prices are estimates based on typical UK rates. Actual costs depend on the specific issue, accessibility, and your location. All quotes from tradespeople on Tradesfolk are completely free.

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How to Prevent This

Use a sink strainer to catch hair. Clean the pop-up waste monthly. Pour hot water down the drain weekly to dissolve soap build-up.

Related Problems

Other Bathroom Fitter Problems

Frequently Asked Questions

What causes sink waste slow to drain?
Hair and soap scum blocking the waste pipe. Pop-up waste mechanism stuck or blocked. Partial blockage further down the waste run.
Is sink waste slow to drain serious?
This is a cosmetic issue. It is not causing damage and can be addressed in your own time.
How much does it cost to fix sink waste slow to drain?
Our illustrative trade-wide planning range is £1,450 to £4,550 and is not a diagnosis-specific quote. The actual repair may fall outside this range. Get a free quote from a local bathroom fitter on Tradesfolk.

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