Can Pipes Be Relined More Than Once?

Introduction to Pipe Relining

Pipe relining is a trenchless method of repairing damaged pipes by installing a new pipe lining inside the existing pipe. This process requires little to no digging, making it less disruptive than traditional pipe replacement. Pipe relining can restore old, worn out pipes and resolve issues like cracks, leaks, root intrusion and misalignment. It’s an efficient and cost-effective alternative to replacing pipes.

With pipe relining, a custom-fitted liner saturated with epoxy resin is inserted into the damaged pipe. Once in place, the epoxy is cured, hardening the liner and effectively creating a 'pipe within a pipe’. This restores functionality and flow without having to dig up pipes and repair them manually.

Pipe materials like clay, cast iron and PVC can all be relined. Pipe materials like clay, cast iron and PVC can all be relined.

Pipe relining can also accommodate bends, joints and changes in diameter, making it highly versatile. Pipe relining can also accommodate bends, joints and changes in diameter, making it highly versatile.

How Many Times Can Pipes Be Relined?

Pipes can be relined multiple times, as long as the existing pipe remains structurally sound. There is no set limit on the number of times a pipe can be relined.

When assessing whether a pipe can be relined again, a plumber will thoroughly inspect the pipe’s condition. Factors like the pipe material, age, location, and previous repairs will be evaluated. As long as the pipe has retained its basic tubular shape and integrity, relining remains an option.

A 50 year old clay pipe may be relined once when it’s 30 years old to resolve cracking issues. Provided it remains structurally intact, it could feasibly be relined again at 50 years old if new leaks or damage appear.

Relining aims to extend the functional lifespan of pipes. As long as the pipe’s basic structure remains sound, relining avoids costly and disruptive digging and replacement. Multiple relining repairs on the same pipe are often more affordable than replacement.

With each successive relining, the diameter of the pipe will decrease slightly. As long as water flow remains adequate and relining endpoints remain accessible, this should not be an issue.

In summary, there is no fixed limit on how many times relining can be done. An experienced plumber will assess the pipe condition and determine if another repair is feasible. Acting quickly at the first signs of pipe damage gives the best long-term relining results.

When to Reline vs Replace Pipes

There are a few key signs that indicate it’s time to replace pipes rather than reline them:

• The pipe material is too deteriorated - Relining works best on structurally sound pipes. If the original pipe is corroded, cracked or fragmented, replacement is better.
• The pipe diameter is too small - Years of buildup in old pipes can shrink the diameter. If it’s too narrow for adequate water flow, replacement is the way to go.
• There are invasive junctions or additions - Extensive repairs over the years may make relining unfeasible. Replacement allows for a fresh start.
• The pipe has collapsed - If a pipe’s basic tubular structure is compromised, it must be replaced.
• Root intrusion is excessive - Dense root masses filling a pipe can prevent epoxy resin liners from adhering and curing properly, necessitating replacement.

An experienced plumber will thoroughly assess the pipe condition and help determine whether a repair or full replacement is the right solution. Acting quickly at the first signs of pipe damage gives the best long-term results.

Overview of the Pipe Relining Process

The pipe relining process involves several key stages:

1. Locating Damage - The first step is to pinpoint any issues within the pipes using CCTV drain inspections. This allows the plumber to identify the exact locations needing repair.
2. Cleaning the Pipes - Before installing the epoxy resin liner, the existing pipe must be thoroughly cleaned using high-pressure water jets. This removes any built-up debris or deposits.
3. Inspecting the Pipes - A final CCTV inspection checks for any remaining obstructions and confirms the pipe is ready for relining. The footage from the inspection also allows the plumber to custom-fit the liner dimensions.
4. Installing the Liner - Once measured, a felt or fibreglass liner saturated with epoxy resin is inserted into the pipe through an access point. An inflatable bladder helps fit the liner tightly to the pipe walls.
5. Curing the Epoxy Resin - After installation, the epoxy resin is cured using hot water or steam, hardening the liner material and bonding it to the old pipe.
6. Final Inspection - A last CCTV inspection verifies that the relined pipe is free of defects and restored to full functionality.

The curing process usually takes 2-3 hours. After that, the relined pipe is immediately ready for service. The whole trenchless process can often be completed in a single day.

Types of Pipes Suitable for Relining

Pipe relining can be used to repair a variety of different pipe materials, as long as the pipe has retained its basic tubular structure and integrity.

Some of the most common pipe types suitable for relining include:

• Clay pipes - Relining is an excellent trenchless repair solution for ageing, cracked clay sewer pipes. The epoxy resin liner bonds firmly to the clay material.
• Cast iron pipes - Cast iron is prone to corrosion and rust buildup over time. Relining restores functionality and flow.
• PVC pipes - PVC can develop cracks and leaks, especially at joints. Relining avoids the need to dig up and replace PVC pipe sections.
• Concrete pipes - Concrete pipes are durable but not impervious to damage. Relining provides an affordable repair option.
• Galvanised steel pipes - Over time, galvanised pipes can corrode and accumulate mineral deposits. Relining renews the smooth flow.

Even small diameter pipes like bathroom drain lines can often be relined. An experienced plumber will assess the pipe condition and determine if relining is feasible.

Pipe Damage Resolved by Relining

Pipe relining effectively resolves many common pipe problems, avoiding the need for disruptive and costly pipe replacement.

Cracks - Small cracks and fractures in pipe walls can lead to leaks and water damage. Relining seals these cracks to stop leaks.

Root Intrusion - Tree roots infiltrating and blocking pipes is a major issue. Relining encases the roots and reopens the pipe pathway.

Joint Misalignment - Ground movement can misalign pipes and break pipe joints. Relining flexibly bridges these gaps.

Corrosion Damage - Corroded pipes have rough walls that impede water flow. Relining covers corrosion damage and restores a smooth flow.

Collapsed Pipes - Sections of fully collapsed pipes must be replaced. But relining resolves partial collapses.

Leaks - Relining seals any leaks along the full length of the pipe run.

Blockages - Partial blockages from grease, scale, or debris can be resolved through relining.

In summary, relining provides comprehensive pipe remediation by sealing cracks, coating walls, and spanning gaps. Acting at the first signs of damage provides the best and most cost-effective long-term results.

Benefits of Pipe Relining vs Replacement

Pipe relining provides numerous benefits compared to full pipe replacement:

• Speed - Relining is significantly faster, often completed in a single day with immediate restoration of service.
• Less Property Disruption - No need for major digging or landscaping destruction.
• Cost Savings - Relining costs a fraction of full replacement.
• Durability - Epoxy liners are structurally reinforced and can last 50+ years.
• Versatility - Relining accommodates bends, diameter changes and difficult access points.
• Environmental - Relining is more eco-friendly with less waste and emissions.
• Non-Invasive - Little surface disruption since access is through cleanouts.
• Longevity - Preserves existing pipe pathway and extends overall lifespan.
• Reduced Risk - Lower likelihood of collateral building damage or service interruptions.

In situations where the existing pipe is still structurally intact, relining is highly preferable to replacement. An experienced plumber can advise on the best repair solution for any damaged pipe.

How to Know If Your Pipes Need Relining

At Blacktown Plumbing, we want to help homeowners identify issues early so pipes can be relined promptly when needed. Here are some signs your pipes may require relining:

• Slow or backed up drains - This indicates blockages or narrowing diameter.
• Gurgling sounds from pipes - Suggests air escaping through cracks or gaps.
• Musty odours coming from drains - Potential gas leaks from damaged pipes.
• Low water pressure - Could mean corroded or obstructed pipes.
• Leaking pipes - Cracks and fractures that require sealing.
• Visibly corroded or rusty pipes - Relining can halt further deterioration.
• Frequent clogs or plumbing backups - Buildup and root intrusion can damage pipes.

Catching damage early maximises the repair effectiveness of relining. We offer comprehensive CCTV drain inspections to assess the condition of your pipes.

If you notice any of the above issues, contact Blacktown Plumbing to schedule an inspection. Our licenced plumbers will evaluate your pipes and suggest cost-effective solutions, whether that’s relining damaged pipes or installing new ones.

We also provide emergency plumbing services in Blacktown and surrounding areas. Give us a call anytime at [insert phone number] or [insert email/contact form] through our website.