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BLOCKED SINKS

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A blocked sink can make everyday use of your kitchen, bathroom, utility room or commercial wash area difficult. Slow-draining water, unpleasant smells, standing water in the basin and bubbling noises from the plughole are all signs that waste may be building up in the pipework.

Drain Division provides professional blocked sink services for homes and businesses. Our engineers can help clear sink blockages, identify whether the issue is local to the sink waste pipe or connected to a wider drainage problem, and advise on the most suitable next step.

If more than one sink, toilet, shower or outside drain is affected, the issue may need wider blocked drain services or emergency drain unblocking.

Common Signs of a Blocked Sink

You may have a blocked sink if you notice:

  • Water draining away slowly
  • Standing water left in the basin
  • Bad smells coming from the plughole
  • Bubbling or gurgling noises after use
  • Water backing up into the sink
  • Several sinks or appliances draining slowly at the same time
  • Leaks or damp smells around sink pipework

A sink blockage may start small, but it can become more disruptive if grease, soap residue, food waste or debris continues to collect inside the pipework.

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What Causes Blocked Sinks?

Sink blockages are usually caused by material collecting inside the trap, waste pipe or connected drainage system. Kitchen and bathroom sinks often block for different reasons, so the cause depends on where the sink is located and how it is being used.

Common causes include:

  • Fat, oil and grease poured into kitchen sinks
  • Food scraps, coffee grounds and cooking residue
  • Hair collecting in bathroom sink wastes
  • Soap scum, toothpaste and scale build-up
  • Small objects falling into the plughole
  • Blocked traps, bottle wastes or waste pipes
  • Poor flow further along the drainage system

If the sink keeps blocking after being cleared, the problem may be further along the pipework. In those cases, a CCTV drain survey may be useful to check for hidden defects, heavy build-up or damaged drainage pipes.

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How We Unblock Sinks

Our engineers can assess whether the blockage is close to the sink, inside the waste pipe or part of a larger drainage issue. This matters because a local sink blockage is handled differently from a blockage affecting the wider system.

Sink unblocking may include:

  • Checking the sink waste, trap and accessible pipework
  • Clearing grease, food waste, soap residue or hair build-up
  • Removing accessible obstructions from sink pipework
  • Checking whether other appliances or drains are affected
  • High-pressure water jetting where the blockage is further into the drainage system
  • CCTV inspection if the blockage is recurring or difficult to trace

Where the blockage is caused by damaged or defective pipework, Drain Division can advise on suitable next steps, including drain relining or pitch fibre pipe repair or replacement where relevant.

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Related Drainage Services

A blocked sink can sometimes be cleared as a local waste pipe issue, but recurring sink blockages may point to a wider drainage problem.

You may also need:

Drain Division provides blocked sink and drainage services across many areas, including Aldershot, Basingstoke, Guildford, Reading, Southampton and Winchester.

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Blocked Sink FAQs

What causes a blocked kitchen sink?

Kitchen sinks are commonly blocked by fat, oil, grease, food scraps, coffee grounds and cooking residue collecting inside the waste pipe or connected drainage system.

What causes a blocked bathroom sink?

Bathroom sinks often block because of hair, soap residue, toothpaste, scale and small items entering the plughole.

Can a blocked sink be part of a bigger drain problem?

Yes. If more than one sink, toilet, bath, shower or outside drain is affected, the blockage may be further along the drainage system rather than limited to the sink.

Should I keep using the sink if it is blocked?

It is better to avoid using the sink if water is not draining properly. Continuing to use it can cause water to back up and may make the blockage worse.

Will I need a CCTV drain survey for a blocked sink?

Not always. A CCTV drain survey may be recommended if the sink keeps blocking, if several drains are affected or if there are signs of a hidden drainage defect.

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