Pipe Relining vs. Traditional Repairs: Pros & Cons

A cracked or deteriorating pipe can cause serious plumbing issues, from leaks to blocked drains. But when it comes to fixing them, should you choose pipe relining or traditional pipe replacement?

Many homeowners struggle with this decision. Pipe relining is a modern, trenchless method that restores pipes from the inside without digging, while traditional pipe replacement involves excavation to remove and replace damaged sections. 

Both have advantages and drawbacks, depending on cost, durability, and environmental impact.

In this guide, we’ll break down everything you need to know about pipe relining vs. traditional repairs, so you can make the best choice for your home or business.

What is Pipe Relining?

Pipe relining is a trenchless repair method that creates a durable, seamless lining inside damaged pipes without the need for excavation.

The Trenchless Solution to Pipe Repairs

Pipe relining is a trenchless repair method that restores the integrity of old or damaged pipes without the need for excavation. 

A resin-saturated liner is inserted into the existing pipe and cured using heat or UV light, creating a new, durable pipe within the old one.

How Does Pipe Relining Work?

1. Inspection: A CCTV drain camera is used to assess the pipe’s condition.
2. Cleaning: The pipe is cleared of debris, scale, and blockages.
3. Liner Installation: A resin-coated flexible liner is inserted into the pipe.
4. Curing: Heat or UV light hardens the resin, forming a solid pipe within the existing one.
5. Final Inspection: The relined pipe is checked to ensure a perfect fit and functionality.

Benefits of Pipe Relining

• No digging is required, which minimises damage to driveways, landscaping, and flooring.
• Cost-effective – reduces labour and excavation costs.
• Fast installation – typically completed within a day.
• Long-lasting – durable lining provides 50+ years of protection.
• Eco-friendly – less waste and lower environmental impact.

Downsides of Pipe Relining

• Not suitable for completely collapsed pipes.
• Higher upfront cost per metre compared to spot repairs.
• Limited to certain pipe materials and sizes.

What is Traditional Pipe Replacement?

Traditional pipe replacement involves excavating and removing damaged pipes before installing new ones, making it a labour-intensive and costly process.

The Excavation Method

Traditional pipe replacement involves digging trenches to remove and replace damaged pipes with new ones. It’s often used for severely deteriorated pipes or when relining isn’t an option.

How Does Traditional Pipe Replacement Work?

1. Excavation: The ground, concrete, or flooring above the pipe is dug up.
2. Pipe Removal: The old, damaged pipe is removed.
3. New Pipe Installation: A new pipe (PVC, cast iron, etc.) is installed.
4. Backfilling: The area is refilled and restored.

Benefits of Traditional Pipe Replacement

• Ideal for pipes with complete structural failure.
• A permanent solution – new pipes are resistant to further damage.
• Compatible with any plumbing system.

Downsides of Traditional Pipe Replacement

• Expensive – excavation and labour increase costs.
• Time-consuming – can take several days to complete.
• Disruptive – digging damages landscaping, driveways, and indoor flooring.

Cost Comparison: Pipe Relining vs. Traditional Repairs

One of the most important factors when choosing a repair method is cost-efficiency.

Pipe Relining Costs

• Prices start at $500+ per metre, depending on pipe material and complexity.
• Lower labour and excavation costs.
• Saves money on landscaping and infrastructure repairs.

Traditional Pipe Replacement Costs

• Higher upfront costs due to excavation and removal.
• Labour-intensive, increasing overall expenses.
• Costs skyrocket if pipes run under driveways, buildings, or gardens.

Verdict: Pipe relining is generally more cost-effective in the long run, especially when factoring in excavation and restoration costs.

Durability & Longevity

Trenchless pipe relining strengthens pipes with a seamless, corrosion-resistant lining, extending their lifespan for decades.

Pipe Relining:

• Expected lifespan of 50+ years.
• Resistant to tree roots, corrosion, and leaks.
• Reinforces old pipes, adding extra durability.

Traditional Pipe Replacement:

• Lifespan depends on the material used.
• New PVC or cast-iron pipes can last 50-100 years.
• More resistant to extreme temperature changes.

Verdict: Both options offer excellent longevity, but relining can provide extra reinforcement for existing pipes.

Environmental Impact: Which is More Eco-Friendly?

Trenchless pipe relining is the greener choice, reducing excavation, waste, and disruption to the surrounding ecosystem.

Pipe Relining

• Minimal waste generation – no need for complete pipe disposal.
• Less excavation – reduces soil and landscape disruption.
• Uses corrosion-resistant materials that extend pipe lifespan.

Traditional Pipe Replacement

• Excavation damages ecosystems and natural surroundings.
• Increased material waste – old pipes are removed and discarded.
• Requires more resources and energy consumption.

Verdict: Pipe relining is the more environmentally responsible choice.

When to Choose Pipe Relining Vs. Traditional Pipe Replacement

Choose pipe relining for a non-invasive, cost-effective repair, while traditional pipe replacement is best for severely damaged or collapsed pipes.

Choose Pipe Relining If:

• You want a non-invasive solution.
• The pipe has minor to moderate damage.
• The pipe is located under concrete, roads, or landscaping.
• You need a cost-effective and long-lasting repair.

Choose Traditional Pipe Replacement If:

• The pipe is completely collapsed or missing sections.
• The plumbing system requires a complete upgrade.
• The pipe material is too deteriorated for relining.
• Alignment issues prevent the use of a liner.

Final Thoughts: Choosing the Best Pipe Repair Solution

To sum up, pipe relining is a modern, cost-effective, and eco-friendly solution for most plumbing issues, while a traditional replacement is best for severe cases.

If you’re dealing with blocked or damaged pipes, consulting a professional is the best way to determine the right repair method. Need expert plumbing advice? 

Contact Sewer Surgeon today for a pipe inspection and professional repair solutions.

Frequently Asked Questions

Is pipe relining better than replacing pipes?

It depends on the extent of damage. Pipe relining is less invasive and cost-effective, but replacement may be necessary for severe structural failure.

How long does pipe relining last?

Most relined pipes last 50 years or more, depending on maintenance and usage.

Is pipe relining safe for drinking water pipes?

Yes, modern relining materials are non-toxic and corrosion-resistant, making them safe for potable water systems.

Does pipe relining work for tree root damage?

Yes, pipe relining seals cracks and prevents root intrusion, but severe root damage may require excavation.

How do I know if my pipes need relining or replacement?

A CCTV drain camera inspection can determine the pipe’s condition and the best repair method.