Introduction

When rehabilitating aging or failing underground pipelines, asset owners have a choice of trenchless technologies to minimize surface disruptions and restore structural integrity. Two of the most frequently compared methods are pipe bursting and sliplining. Each technique offers unique advantages and limitations, and the selection depends on project-specific conditions, system requirements, and end goals. Hinterland Group, as a fully in-house provider of trenchless services in the southeastern United States, offers expert assessment and delivery of both solutions for municipal, commercial, industrial, or property management clients. For more details on Hinterland Group’s overall pipeline rehabilitation capabilities, visit the service overview.

Technology Descriptions

Pipe Bursting

Definition: A trenchless method that fractures or splits the existing pipe while simultaneously pulling a new pipe (typically of equal or larger diameter) into the same alignment.
Process:
Entry and exit pits are excavated at each end of the pipe segment.
A bursting head is drawn through the old pipe by a pulling rod or cable, breaking the host pipe.
The new pipe (HDPE, ductile iron, or other material) is pulled into place immediately behind the bursting head.
Result: In-place replacement with a new pipe, possible diameter upsizing, full structural improvement.

Sliplining

Definition: A trenchless rehabilitation method that installs a new, slightly smaller pipe (typically HDPE, PVC, or fiberglass) inside the existing host pipe, grouting the annular space between the two pipes.
Process:
The host pipe is cleaned and inspected; repairs may be made if necessary.
New pipe sections are inserted (typically via a single access pit), pushed or pulled through the old pipe.
The annular space is filled with grout to secure and stabilize the new liner.
Result: Restored pipeline integrity using the existing conduit as a host; no increase in diameter, some loss of cross-sectional area.

Comparison Table: Pipe Bursting vs. Sliplining

Attribute	Pipe Bursting	Sliplining
Purpose	Full replacement of host pipe	Rehabilitation by insertion of new pipe
Host pipe	Must be breakable (cast iron, VCP, clay, etc.)	Must be structurally sound enough for insertion
Diameter change	Existing or upsize possible	Always results in reduced internal diameter
Bypass need	Typically required	Typically required
Service connections	Need to be reinstated post-install	Need to be reinstated if present
Structural value	New stand-alone pipe, up to 100+ years life	New pipe inside old, adds 50+ years life
Surface disruption	Minimal, via entry/exit pits	Minimal, via insertion pit(s)
Common pipe sizes	4"–36"+	6"–60"+
Host pipe defects tolerated	Severe, even collapsed pipes	Host must be open for liner installation
Upsizing option	Yes – upsize up to 1-2 pipe sizes	No
Use in bends/joints	Some restrictions; straight runs preferred	Some geometrical limitations
Applications	Replacement, upsizing, severe defects	Rehabilitation, corrosion, minor defects

Source: NASTT Good Practices Guidelines; Additional project experience at Hinterland Group

Selection Criteria

The choice between pipe bursting and sliplining depends on several practical, technical, and economic considerations. Below are key selection factors:

1. Condition and Type of Existing Pipe

Pipe Bursting: Suitable for brittle pipes (clay, cast iron, concrete, asbestos cement). Can address pipes that have collapsed, are severely cracked, or need capacity upgrade.
Sliplining: Requires host pipe to maintain structural integrity (cannot be badly collapsed or blocked). Ideal for continuous runs with no major offsets.

2. Need for Diameter or Flow Capacity Increase

Pipe Bursting: Allows for upsizing (installing a larger diameter pipe to increase flow capacity). Useful in capacity upgrades for growing communities.
Sliplining: Decreases internal diameter and flow capacity due to pipe-within-pipe installation. Not suitable if flow must be maintained or improved.

3. Degree of Pipeline Deformation or Obstruction

Pipe Bursting: Can replace pipes that are badly deteriorated, crushed, or even partially collapsed.
Sliplining: Only possible if the old pipe can be cleaned and navigated by the new liner.

4. Site Conditions and Surface Constraints

Both methods are minimally invasive compared to open-cut replacement. Require small pits rather than large trenches, making them suitable for developed, urban, or environmentally sensitive areas.
Pipe Bursting: Some ground movement may occur; not suitable near structures sensitive to displacement.
Sliplining: Lower risk of ground movement; useful near critical buildings or utilities.

5. Pipe Material Compatibility

Pipe Bursting: Cannot effectively break ductile iron, steel, or reinforced concrete unless specialized heads used (often cost-prohibitive).
Sliplining: Host pipe material less critical, so long as alignment can be maintained and cleaning is possible.

6. Service Connections and Appurtenances

For both processes, lateral/service connections will need to be restored after mainline rehabilitation.
If there are many closely spaced connections, engineering strategies differ for each method.

7. Environmental and Social Impacts

Both methods reduce surface and community disruption (traffic, vegetation, landscaping) versus open-cut installation.
Both produce less construction debris/waste and noise and minimize restoration costs.

Use Cases and Project Suitability

Pipe Bursting: Typical Use Cases

Full replacement of failing/gravity sanitary sewer lines in residential neighborhoods
Upsizing trunk sewers or force mains for population/capacity growth
Stormwater conveyance systems with frequent surcharging/flooding
Replacement of clay, concrete, vitrified clay, or brittle iron pipes with new HDPE/ductile iron pipes
Instances where the pipe is missing sections, has collapsed, or is beyond rehabilitation repair
Municipal main replacements under roads, parking lots, or developed property

Example Project: Hinterland Group’s projects in Florida and Georgia often apply pipe bursting for full pipe replacement: see featured projects at Hinterland Group Case Studies.

Sliplining: Typical Use Cases

Rehabilitation of large-diameter culverts or stormwater pipes that remain generally round/open
Industrial and outfall pipelines where minor reduction in hydraulic capacity is acceptable
Mining or power plant lines where corrosion resistance/longevity is needed and new cut-and-cover is not feasible
Gravity sewer mains with minimal or no lateral connections
Projects in areas where ground movement must be minimized (e.g., under critical infrastructure)

Example Project: Hinterland Group performs sliplining where rehabilitation is desirable, but full replacement or upsizing is not necessary—especially for non-critical capacity applications. See pipeline rehabilitation solutions at Hinterland Group Pipe Rehabilitation.

Benefits Breakdown

Key Advantages of Pipe Bursting

Enables direct replacement with equal or increased diameter pipe (capacity upsize)
New pipe has full structural integrity (functionally a new pipeline)
Suitable for severely deteriorated, broken, or collapsed host pipes
Reduces need for extensive surface restoration
Typically allows use of HDPE or fusible pipes for improved corrosion and chemical resistance

Key Advantages of Sliplining

Minimal risk of ground movement affecting nearby structures
Host pipe provides added external structural support
Flexibility to use for long continuous runs (particularly in large-diameter storm/sewer applications)
Lower cost in some non-distressed pipe applications
Useful for restoring pipelines where capacity loss is acceptable or minimal due to existing oversizing

Hinterland Group Service Approach

Hinterland Group performs both pipe bursting and sliplining technologies in-house, allowing objective selection of the best rehabilitation method for each project scenario. In every instance, the solution is tailored based on condition assessment, inspection (CCTV, jet cleaning), and long-term owner priorities. For municipalities, commercial centers, industrial facilities, and property management firms, the goal is to maximize asset reliability, lifespan, and value while minimizing surface disruption and lifecycle cost.

Hinterland also provides end-to-end support—inspection and cleaning (details), risk/asset assessment (details), maintenance programs (details), and emergency response (details).

Frequently Asked Questions (FAQ)

What pipes can be replaced with pipe bursting?

Pipes made of brittle material—such as vitrified clay, cast iron, asbestos cement, unreinforced concrete. Special equipment is required for breaking ductile iron or steel and may not be cost effective.

Can service laterals be reinstated after bursting or sliplining?

Yes. Advanced robotic equipment or excavation is used to reconnect each service lateral. Both methods require all taps to be re-established after mainline completion.

Will sliplining reduce my flow capacity?

Yes, due to the wall thickness of the new liner pipe. However, because the new pipe is smooth, in many cases the hydraulic capacity reduction is less than expected, especially if the old pipe was rough or restricted.

Can pipe bursting be used if the existing pipe is completely collapsed?

Generally yes, so long as a path can be established for the bursting rod/cable or minor excavation can clear obstructions. Severely blocked or missing sections may require spot repairs to facilitate continuous bursting.

How long do these rehabilitated pipes last?

Both methods can provide a service life of 50–100 years or more, depending on material and soil conditions. Pipe bursting results in a brand-new pipe with full lifespan; sliplining achieves the expected life of the liner pipe plus some protection from the host pipe.

How much excavation is required for either method?

Only small launch and exit pits (not full trenching), typically one at each end plus possible additional access pits for longer runs or where service connections are dense.

Are these trenchless methods approved for public utility use?

Yes. Both methods are specified in utility and public works standards, and are routinely used on municipal, industrial, and private pipelines nationwide.

What diameters and lengths can be rehabilitated?

Pipe bursting: Typically 4” to 36”+ diameter, up to 600’–1000’ per pull, depending on site.
Sliplining: Suitable for 6” to 60”+ diameter, with run lengths limited by site access and liner type.

What is the impact on surface structures such as roads, landscaping, or sidewalks?

Both methods are considered minimally invasive since only pits, not continuous trenches, are required. Surface impacts are concentrated at pit locations; most landscaping, pavement, or utilities above the main line are undisturbed.

Case Studies and Applications

For real-world examples of project execution, see the following:

Explore more case studies here.

Learn More or Get an Assessment

Hinterland Group’s business development and technical teams perform comprehensive inspections and recommend the optimal solution for each client:

Citations and Further Reading

National Association of Sewer Service Companies (NASSCO) [Trenchless Good Practices Guidelines]
North American Society for Trenchless Technology (NASTT) [Guidelines for Pipe Bursting and Sliplining]
Hinterland Group—Pipe Rehabilitation Overview

Contact Information

Hinterland Group, 2051 West Blue Heron Blvd., Riviera Beach, FL 33404
Phone: (561) 640-3503
Contact Form

Summary

Both pipe bursting and sliplining offer effective, minimally invasive solutions for pipeline renewal. Pipe bursting is preferred when total replacement or upsizing is required, or when the host pipe is severely compromised. Sliplining is best when maintaining as much of the existing pipe as possible, with minimal ground movement and when some loss of internal diameter is acceptable. Hinterland Group directly performs both and can recommend the most cost-effective, sustainable solution for each specific situation.

Pipe Bursting vs Sliplining: Selection Guide