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Drain Relining (CIPP) Cured-In-Place-Pipe



An introduction into the technological advancements of the drainage services industry. Within this article you will find an explanation and a demonstration for the use of (CIPP) cured-in-place-pipe, a ‘No Dig’ trenchless epoxy drain-relining method for replacing a sewerage pipe without the need for timely excavations.

A consideration for our drainage

When considering our domestic or commercial drainage, most will imagine a network of hidden pipes beneath our feet, buried deep in the earth, below or under our existing pathways. The only evidence for our drainage is the gullies and manholes we see dotted around a property. Which obviously have a purpose but usually that’s all people really want to know about them.

It is only when a problem arises like a blocked drain or a backed-up toilet, we are then forced to recognise that there is now a problem with the drainage, and to try to understand what went wrong and how to fix it, and quickly!

Unfortunately, it is this very situation which deters us from expounding about all the possibilities for improving, or generally considering the condition of our drainage. Most people would want a quick fix and learn no more about it!

The advancement of drainage services

Fortunately for us all, drainage services have advanced over the years and are now equipped with some impressive technologies and methods. In particular one of these can investigate and map your total drainage in a very short time span, such as having a CCTV drain Survey.

This can be done as part of an emergency call-out for an unblock or as part of a planned maintenance service. Whereby the drainage engineer can insert a CCTV camera into your sewer pipe network to fully record in real-time the condition of your drainage pipes, and all its connecting bends and further producing conclusive evidence for your drainage integrity.

Although this is only a snippet into the total extent for what is now possible in the drainage services industry. I think it is best to now navigate more importantly onto the subject of (CIPP) cured-in-place-pipe, a trenchless drain relining technology.

What are trenchless drain technologies?

Trenchless drain technologies are a combination of advanced methods that are widely used in conjunction with technology designed for the drainage industry. The purpose for the use of trenchless drain practices, is solely to reduce time, noise, disturbance at a fair price.

Example: Consider that Mr Jones further to a CCTV drain survey has now accumulated an accurate and detailed report for his sewer pipe that runs the length of his newly laid driveway. The CCTV drain surveys reported findings clearly show on the recorded footage taken, that his sewer pipe has deteriorated overtime and now multiple cracks have developed for the total run of his driveway.

Mr Jones, Here are your options?

The sewer pipe is now infested with tree roots which are aggravating this deterioration and there is also a foul odour emanating from his driveway, which is unpleasant to visitors entering onto his property.

The drainage services company will have shared these findings and also would have given Mr Jones some realistic options to rectify the issue, complete with an estimation for further works stating costs and a method of works.

For this example, options on the table for Mr Jones would approximately look like these:

  1. A cheap but very risky tree root removal and internal pipe cleaning may provide a temporary fix but in doing so, may result in further deterioration and a collapsed sewer pipe as a result.
  2. Or more inconveniently, we can excavate part of your new driveway and unearth the sewer pipe and replace it with a new one? Which will result in having to hire an excavator, survey the ground for other utilities such electrical cables, gas mains and generally be noisy and a nuisance to your neighbours.
  3. Or chose a trenchless drain relining method such a (CIPP) a cured-in-place-pipe created by an epoxy layered liner which does not involve digging a trench, is much quieter, cleaner, and overall, more convenient.

For the purposes of entertainment and learning, I will leave this one to a poll.

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More seriously to the point lets really delve into a real understanding for this astonishing advancement for trenchless technology.

What is epoxy drain relining or (CIPP) Cured-in-Place Pipe?

In brief the epoxy is a two-parts resin mixed together and then poured into a felt liner or structural sleeve which has an inflatable device inside of it. Very much like a linear shaped balloon.

The pipe is prepared and fully examined by a CCTV drain Survey to map and identify its total condition and then is thoroughly cleaned with high-pressure water jetting.

3D model animations visual aid for trenchless drain relining (CIPP) technologies 1 of 3

The epoxy liner and its inflatable device is then inserted into the total run of the pipe, covering the exact position to be cured into a new pipe. The balloon is then inflated and compresses the resin-soaked liner tightly against the original pipe.

Once the resin has cured the balloon is removed leaving a perfect mould which replaces the original pipe making it totally redundant, or you could say, it has made a new pipe within the old pipe.

3D model animations visual aid for trenchless drain relining (CIPP) technologies 2 of 3

Once the resin has cured the balloon is removed leaving a perfect mould which replaces the original pipe making it totally redundant, or you could say, it has made a new pipe within the old pipe.

The new cured in-place pipe is now a strong and durable replacement which will last for 50 years or longer. CIPP technology is a fast and economic solution to pipe fixes and replacements. It is totally trenchless which mean no need for inconvenient excavations, noise and disturbances.

3D model animations visual aid for trenchless drain relining (CIPP) technologies 3 of 3

Costs average between - Price Range = £630 to £850

Consideration of other factors like pipe sizes, length of run, resin types, environment, traffic management, will affect the price range. it is always best to have a chat with a few drainage services companies for a personalised quotation.

This content is accurate and true to the best of the author’s knowledge and is not meant to substitute for formal and individualized advice from a qualified professional.

© 2021 Mark Bennis

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