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Drain Descaling

Recurring blockages or slow-flowing drains? Hard scale can build up on the inside of older pipework, narrowing the bore and restricting the flow. Descaling removes that build-up and helps restore the pipe's internal diameter.

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DrainAway - expert drainage solutions you can rely on.

Looking down the inside of a cast iron pipe heavily coated in hard black and brown scale.

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Sound familiar?

  • The drain clears, but the problem keeps coming back
  • Water takes longer to drain than it used to
  • You have older cast iron drainage pipework
  • The drain never seems to run as freely as it should

How we do it

  1. 1

    We inspect the drainage system

    We check the pipework to confirm the scale build-up and identify where the flow is being restricted.

  2. 2

    We remove the scale

    We mechanically descale the inside of the pipe, removing hardened deposits from the pipe walls and opening the bore back up.

  3. 3

    We flush and check the flow

    We flush the loosened scale from the system and check the drain is running freely before we finish.

Drain Descaling, on real jobs

Every photo on this site is one of ours.

Uric scale build-up inside a stack pipe
Drain descaling removing hardened scale from pipe walls
Mechanical descaling restoring the internal pipe bore
Heavy scale build-up being removed from a drain pipe
See more of our work

Questions we get asked

How do I know if my drains need descaling?
Recurring blockages, slow flow and older pipework can all point to heavy scale build-up. We can access the drainage system, assess the condition of the pipework and advise whether descaling is the right solution.
How often does drain descaling need doing?
It depends on the condition of the pipework and how quickly scale builds up. For many domestic systems, it may only be needed occasionally, while some commercial systems benefit from planned maintenance.

Other ways we can help

Congealed fat and grease pulled out of a waste trap, hanging from the open pipe.

Drain Maintenance

Scheduled cleaning for kitchens, flats and commercial sites.

Read more
A CCTV drain survey monitor showing the inside of a pipe at a joint with visible scale.

CCTV Surveys

A camera down the drain so you can see the problem yourself.

Read more
A roadside inspection chamber filled to the top with congealed fat, grease and food waste, the cover lifted off beside it.

Blocked Drains

Sinks, toilets, showers and outside drains cleared, day or night.

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Why choose DrainAway?

  • Experienced Drainage Engineers

    Practical advice from experienced drainage engineers who actually do the work. From blocked drains and internal blockages to drain repairs and CCTV surveys, we know what we're looking for.

  • We Do the Job Properly

    We don't just clear the immediate problem and walk away. Where appropriate, we'll look at what's caused it and advise you on the best way forward.

  • Fair, Clear Pricing

    We'll explain what's involved and give you clear pricing before any work starts. If we uncover anything unexpected, we'll talk you through it before carrying out additional work.

  • 24/7 When You Need Us

    Drainage problems don't stick to office hours. Whether it's a blocked toilet, overflowing drain or something more serious, our drainage engineers are available day or night.

  • 191+ Five-Star Google Reviews

    Thousands of customers have trusted DrainAway with their drainage problems — from blocked drains and emergency call-outs to drain repairs and CCTV surveys.

Slow drains? Don't wait for a blockage.

Scale build-up can gradually restrict the flow. Our experienced engineers can assess the problem and advise on the right solution.

07482 390165

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