A Quick Guide To Drain Relining

In terms of drainage issues, damaged drain pipes are probably the most troublesome. Not only are they difficult to detect, but leaky drain pipes can also pollute the surrounding soil.

Years ago, the only way to fix a damaged drain pipe was the costly and long process of excavation and replacement. It was a notoriously difficult and impractical process since most damaged pipes are often buried deep underground and sometimes buried under infrastructure such as driveways, roads, or retaining walls.

Today, modern technology and innovations in the plumbing industry offer a quick and cheaper method of fixing drainage pipes—drain relining.

If you’re looking for a reliable contractor for a drain relining Northern Beaches has to offer, look no further than Hello Plumbing. With over 40 years of experience, they offer first-rate, reliable plumbing services in numerous areas in Sydney.

This article discusses the basics of drain relining and its numerous benefits. 

Understanding Drain Relining

Drain relining is a no-dig repair technology to fix damaged drainage pipes. It uses a form of drain sleeve or lining similar to glass-reinforced plastic and fixes it into the existing damaged pipe.

This method can be used to fix leaking or open joints and radial or circumferential cracks caused by blockages. It’s also effective in preventing root intrusion which most old clay drainage pipes are prone to.

How Does It Work?

First, a professional will assess the damage and determine how much of your drain needs to be relined using CCTV survey technology. The pipes are cleaned to remove any debris and obstruction during the relining process and ensure a good bond on the pipe wall. A robotic cutter is used to remove intrusions such as tree roots. Then, a high-pressure water jet is used to completely clear the pipe of any debris.

The pipes are re-inspected to make sure all possible intrusions and debris have been removed. Once the pipes are confirmed free of debris, the plumbing expert will start relining process. Relining can be done in two ways. The first is through inversion. In this method, the resin is poured into the pipe liner and rolled to ensure the even distribution of the resin. Using inflated airbags or water pressure, it’s slipped into the damaged pipe.

Another way to install a pipe relining is through GFRP UV pipelining. Using winches and cables, the pipelining is pulled into the damaged pipe. Regardless of which method you choose, they’re guaranteed to have a perfect fitting and effective drainage.

After the installation, the pipes are cured. This involves the hardening of the resin so the lining stays in place. When installing via inversion, it’s simply left to cure by itself. Some professional suggests running hot water through the pipe to speed up the curing process. Meanwhile, if installed via GFRO UV pipes, UV lighting is required to cure to its full hardness.


Benefits Of Drain Relining

Once the damaged section has been fixed, your contractor will make a final inspection to ensure there are no leaks using CCTV surveys and leak detection equipment. The following are advantages of drain relining you can experience:


As mentioned before, drain relining is a no-dig repair method. Since there are no excavations, there’s no need for manpower and heavy excavation equipment that increases the total cost of the repair. In addition, the absence of infrastructural replacement expenses on driveways or retaining walls also contributes significantly to the low cost of a drain relining.

Speedy Repair

Drain relining is a less intrusive repair method. It can be done without the lengthy disruption of daily activities and has minimal downtime. Due to minimal disruption, it also allows for a quick repair. No excavation or a huge mess to deal with after fixing the drain pipes. A plumbing expert should be able to finish repairing your drain in several hours. This is useful in cases of emergency repairs of stormwater or sewer drains.

Permanent And Future-Proof Repair

Unlike clay drain pipes, pipelining used in drain relining has a durability of over 50 years. Thus, it ensures permanent structure integrity. In addition, a plumber will check all possible cracks and leaks within the pipe and seal them to prevent future leaks. Even areas where no leaks are attended to.


Drain relining is a modern day’s answer to the age-old problem of repairing and fixing drains and pipelines comprehensively and economically. It’s a superior solution that’ll save you money, time, and heartache from digging your luxurious garden or that expensive cobblestone driveway.

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