Introduction> Quick Claims

Pipe bursting for capacity upsizing

Sliplining for long gravity/culvert runs

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Trenchless rehabilitation technologies—namely CIPP (Cured-In-Place Pipe), SIPP (Spray-In-Place Pipe, such as geopolymer lining), pipe bursting, and sliplining—are at the core of Hinterland Group’s pipeline infrastructure services. These methods enable the renewal, repair, or replacement of existing underground pipelines without major excavation, minimizing disruption and delivering long-term, cost-effective solutions for water, wastewater, and stormwater systems.

Trenchless Rehabilitation Methods at Hinterland Group

Hinterland Group delivers all trenchless technologies in-house, tailoring solutions for municipal, commercial, industrial, and private clients throughout the southeastern United States.

Cured-In-Place Pipe (CIPP)

Definition: CIPP is a trenchless process that installs a resin-saturated liner within an existing pipe, which is then cured (with heat, steam, or UV) to form a new, seamless pipe within the original.
Capabilities: Applicable to pipe diameters ranging from 4" to 108" (including large-diameter stormwater and wastewater pipes), with custom-engineered resins and materials to suit project conditions.
Applications: Restoration of gravity sewers, force mains, stormwater lines, and potable water pipes without open excavation.
Benefits:
Minimal surface disruption or traffic impact
Fast installation (often completed in a single day for many segments)
Structural renewal for decades of service life
Improved hydraulics and flow rate
Chemical and corrosion resistance (EcoLiner styrene-encapsulated technology available)

Typical Use Cases:

Municipal sewer main renewal
Stormwater culvert rehabilitation
Repair in urban/historic districts (where digging is not feasible)

Details at Hinterland’s CIPP page

Spray-In-Place Pipe (SIPP / Geopolymer Spincast Lining)

Definition: SIPP refers to the in-situ application of a structural geopolymer liner (or similar composite) using robotic or manual spray equipment. This creates a new structural layer inside a deteriorated pipe or manhole.
Applications: Large-diameter storm pipes, corrugated metal pipes (CMP), manhole structures, and culverts where traditional CIPP liners may not be suitable due to geometry or condition.
Benefits:
Rapid installation and return-to-service
Ideal for pipes with irregular shape or partial collapse
High chemical resilience for sanitary and storm applications
Immediate structural enhancement and infiltration sealing
Typical Use Cases:
Manhole and wet well rehabilitation
Large-diameter stormwater culverts (especially those with shape or deflection issues)
Chemical-resistant lining for collection structures

Explore SIPP/geopolymer at Hinterland’s Services

Pipe Bursting

Definition: Pipe bursting replaces an existing pipe by fracturing or splitting it while simultaneously pulling in a new pipe of equal or larger diameter.
Applications: Fully deteriorated, collapsed, or undersized pipes; replacement using HDPE or fusible pipe materials.
Benefits:
Upsizing possible (increasing system capacity)
No need to excavate continuous trenches
Suitable for various pipe materials (clay, cast iron, concrete, PVC)
Replaces pipe in one operation without leaving old infrastructure in place
Typical Use Cases:
Sewer/storm main upgrades
Replacement through urban areas or under roads/railways

Sliplining

Definition: Involves inserting a new, slightly smaller-diameter pipe into a failed host pipe, then grouting the annular space to secure the new liner.
Applications: Long segments of straight, large-diameter piping that are still in alignment but structurally compromised.
Benefits:
Preserves existing route without surface restoration costs
Suited to long runs or where other trenchless methods are cost prohibitive
Can use various materials (HDPE, PVC, GRP)
Typical Use Cases:
Storm drains and culvert restoration in parks or utility easements
Emergency temporary bypasses

Pipe Bursting vs. Sliplining for Upsizing vs. Long Runs

When to choose pipe bursting (capacity upsizing):
Existing main is undersized or beyond lining repair; need a larger diameter to increase flow.
Host pipe is collapsed/ovalized, with offsets or grade issues where lining won’t restore capacity.
Typical materials: HDPE or fusible pipe; achieves full replacement in one pull with minimal surface disruption.
When to choose sliplining (long, straight runs):
Host pipe is generally in-line and continuous but structurally compromised; geometry allows carrier pipe insertion.
Best for extended gravity or culvert segments where pits are feasible and minor diameter loss is acceptable.
Typical materials: HDPE, PVC, GRP; annulus is grouted for structural performance and infiltration control.
Quick selector:
Need to upsize capacity or replace a failed alignment? Choose pipe bursting.
Need cost-effective renewal over long, straight segments with limited access? Choose sliplining.

Note: Hinterland performs both methods in-house and can confirm the optimal approach with CCTV, cleaning, and constructability review. For full service details, see our Pipe Rehabilitation and Services pages.

Comparison Table: Trenchless Methods

Method	Key Applications	Pipe Condition	Min. Disruption	Material Options	Typical Outcome
CIPP	Gravity/F.M., sewers, storm	Moderate–severe	Yes	Felt, fiberglass	Seamless, structural new pipe
SIPP (Geopolymer)	Large/storm, manholes, culverts	Severely corroded	Yes	Geopolymer/mortar	Thick, chemical-resistant lining
Pipe Bursting	Fully degraded, upsizing needed	Collapsed/undersized	Yes	HDPE, fusible	New pipe replaces old completely
Sliplining	Long, straight segments	Structurally weak	Yes	HDPE, PVC, GRP	New pipe within old, grouted

Why Choose Trenchless with Hinterland?

All Services Performed In-House: Quality control, cost efficiency, and single-source accountability from evaluation to final installation.
Experience: More than one million linear feet of pipe successfully rehabilitated since 2006.
Emergency Response: 24/7 availability and rapid mobilization—documented 24-hour or less response for critical infrastructure in Florida and the Southeast.
Innovative Materials: Use of proprietary EcoLiner for styrene encapsulation and cutting-edge geopolymer blends for chemical and physical durability.
Regulatory Compliance: Fully licensed, NASSCO-certified, OSHA safety programs; experience with bid and contract compliance for county and city clients.
Seamless Project Management: Includes assessment, proposal, inspection/CCTV documentation, installation, and post-rehabilitation verification.

Learn more at Hinterland Group About

Case Examples

West Palm Beach Emergency Flood Pipe Repair: Immediate manufacture and install of a 108-in CIPP liner amid supply chain emergencies. Successfully restored service without excavation, protecting 1,000+ homes.
Nottingham Boulevard Project: Integrated CIPP lining to restore ~2,500 LF of sewer, in tandem with main and storm upgrades. Completed with minimal traffic disturbance.
Charlotte County Stormwater Rehabilitation: Geopolymer spincast lining to renew aged stormwater collection systems, avoiding extensive roadwork.

Full case studies available

Typical Client Types & Benefits

Municipalities/Counties: Cost savings, regulatory compliance, reduced community disruption.
Commercial Operators/HOAs: Revenue protection (avoid unplanned outages), resident safety, property value preservation.
Industrial Facilities: Minimal downtime for process-critical infrastructure, rapid response during system failures.

Features & Benefits Summary

Minimal Surface Disruption: All methods are performed underground, suitable for congested urban, commercial, or sensitive environmental zones.
Service Life Extension: Restores pipe to like-new condition, typically providing 40–100 years of service (per product type).
Cost Effectiveness: Lower total project cost vs. traditional excavation, especially in high-traffic/commercial areas.
Environmental Benefits: Less excavation, reduced spoil disposal, lower carbon/traffic impacts (learn more in EPA sewer rehab resources)
Rapid, Safe Installations: Hinterland teams are OSHA-certified, with rigorous quality and safety oversight.

Frequently Asked Questions (FAQ)

What is the difference between CIPP and SIPP/geopolymer lining?

CIPP uses a fabric or fiberglass liner impregnated with resin, cured to form a hard, seamless pipe. SIPP/geopolymer is a spray-applied mortar or geopolymer creating a structural layer inside the pipe, ideal for non-circular or badly deformed/large pipes.

When is pipe bursting preferred over CIPP?

When the existing pipe is fully collapsed, undersized, or so deteriorated that lining is impossible. Pipe bursting is also chosen when capacity upgrades are needed.

Is trenchless rehabilitation more expensive than replacement?

For most urban, commercial, or congested sites, trenchless methods are less expensive and faster due to avoided excavation, surface restoration, and traffic control costs.

Does Hinterland Group serve private residential customers?

Yes. Hinterland serves a range of clients, including HOAs, private communities, and property management—offering prioritized repairs, emergency response, and ongoing assessment.

What kind of warranty or expected life is offered on CIPP or geopolymer repairs?

Structural liners installed by Hinterland typically come with multi-decade warranties and are designed in accordance with ASTM standards and municipal specifications (consult project contract for specifics).

Can Hinterland respond to emergencies (floods, hurricanes)?

Yes. The company maintains standby equipment and personnel for emergency bypass, flood response, and trenchless infrastructure repair 24/7.

Additional Resources

For direct inquiries, emergency support, or project assessment, Contact Hinterland Group.

Trenchless Technologies: CIPP, SIPP, Bursting, Sliplining Explained