Learning Centre

Do I Need Sewer Lining or Full Replacement?

If a sewer camera inspection has revealed damage in your sewer line, you may be wondering whether sewer lining can solve the problem or if a full sewer replacement is necessary. While both options can restore a damaged sewer system, they are designed for different situations and not every sewer line is a candidate for lining.

What Is Sewer Lining?

Sewer lining is a trenchless repair method that creates a new pipe inside the existing sewer line. Rather than excavating and removing the old pipe, a liner is installed and cured within the existing system.

Once completed, the liner creates a smooth, continuous pipe that can improve flow and reduce the likelihood of root intrusion.

Benefits of Sewer Lining

• Minimal excavation
• Less disruption to landscaping
• Can extend pipe life significantly
• Reduces root intrusion opportunities
• Often faster than traditional replacement

Limitations of Sewer Lining

Sewer lining is not a solution for every sewer problem.

Pipes must still maintain enough structural integrity for the liner to function properly.

Lining may not be appropriate when:

• The pipe has collapsed
• Large sections are missing
• Severe offsets exist
• Pipe grade issues are present
• Significant bellies or sags exist

What Is Full Sewer Replacement?

Full sewer replacement involves excavating and removing all or part of the existing sewer line and installing a new system.

Modern replacements typically use PVC pipe, which provides excellent durability, corrosion resistance, and long-term reliability.

Benefits of Full Sewer Replacement

• Completely new sewer system
• Eliminates structural defects
• Corrects grade and slope issues
• Removes collapsed sections
• Provides long-term reliability
• Often best for aging clay sewer systems

When Sewer Replacement Is Usually Recommended

Collapsed Pipes

If sections of pipe have collapsed, lining generally cannot restore structural integrity.

Severe Root Damage

Extensive root intrusion may leave the pipe too damaged for lining to be effective.

Multiple Defects

When several defects exist throughout the sewer line, replacement may be the most practical long-term solution.

Orangeburg Pipe

Orangeburg pipe often deteriorates to a point where replacement becomes the preferred option.

Cost Comparison

The cost of sewer lining and sewer replacement varies significantly depending on:

• Pipe length
• Pipe depth
• Accessibility
• Existing pipe condition
• Restoration requirements

While lining can sometimes reduce excavation costs, it is not always less expensive than replacement. Every property should be evaluated individually.

How a Sewer Camera Inspection Helps

A professional sewer camera inspection provides the information needed to determine whether lining is possible or if replacement is the better solution.

During the inspection, technicians evaluate:

• Pipe condition
• Root intrusion
• Structural defects
• Pipe alignment
• Collapsed sections
• Overall system integrity

Frequently Asked Questions

Is sewer lining permanent?

Modern sewer liners are designed to provide a long service life, but performance depends on the condition of the original pipe and installation quality.

Can sewer lining fix a collapsed pipe?

In most cases, no. Collapsed sections usually require excavation and replacement.

Is sewer replacement always necessary for root intrusion?

Not always. The severity of the root damage and condition of the pipe determine the best solution.

Which option lasts longer?

Both methods can provide long-term solutions when used appropriately. The right choice depends on the condition of the existing sewer system.

Not Sure Which Option Is Right?

Birnie Plumbing & Drains provides sewer camera inspections, sewer repairs, and sewer replacement services throughout Hamilton, Burlington, Niagara Region, Haldimand County, and surrounding communities.

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