Sewer Line Repair Methods Explained: CIPP, Pipe Bursting, Spot Repair & Open Cut

When a sewer line fails, the method used to fix it matters as much as the fix itself — the difference between digging up your entire yard and repairing the pipe through a single access point often comes down to which of these four methods actually fits your situation. Here’s what each one is, how they compare, and which one a camera inspection is likely to point you toward.

The Four Methods at a Glance

	CIPP Lining	Pipe Bursting	Spot Repair
How it works	Resin-saturated liner inflated and cured inside the old pipe	Old pipe fractured and pushed outward as a new pipe is pulled in behind it	A short liner section cures over just the damaged area
Excavation needed	None — access via existing cleanout	Two small pits (insertion + receiving)	None — access via existing cleanout
Best for	Cracked, corroded, or leaking pipe that's still round and structurally sound enough to line	Pipe too damaged to line, or needing a larger diameter	One isolated defect in an otherwise sound pipe
Not a fit for	Severely collapsed or misshapen pipe	Very tight utility corridors with no room for pits	Pipe with multiple defects along its length
Typical lifespan	50+ years	50+ years (new pipe)	Matches CIPP — 50+ years at the repaired section

For an authoritative technical breakdown of how these trenchless technologies work, NASSCO’s Pipe Rehabilitation overview covers CIPP, pipe bursting, and trenchless spot repair in technical detail.

CIPP (Cured-in-Place Pipe) Lining

CIPP creates a new pipe inside the old one. A resin-saturated felt or fiberglass tube is inserted through an existing access point, inflated to press against the pipe walls, then cured (with heat, steam, or UV light) until it hardens into a seamless, jointless pipe within the original. Once cured, the liner is resistant to tree roots, corrosion, and rust, and can extend service life by 50 years or more. Our trenchless pipe lining page covers the full installation process and what to expect.

• Best for: cracked, corroded, or root-damaged pipe that’s still round and structurally intact enough to accept a liner.
• Not a fit for: pipe that’s collapsed, badly bellied, or missing sections — the liner needs a stable host pipe to bond to.

Pipe Bursting

Pipe bursting replaces the pipe entirely without removing it from the ground first. A bursting head is pulled through the old pipe, fracturing it and driving the pieces outward into the surrounding soil, while a new pipe is pulled in directly behind it through the same path. Two small access pits — one at each end — are the only excavation required, which is why it’s still classified as trenchless despite needing some digging. Our sewer pipe replacement page covers this process in more depth.

• Best for: pipe too damaged for lining, or situations where a larger-diameter replacement pipe is needed.
• Not a fit for: extremely tight utility corridors where there’s no room to excavate even small access pits.

Spot Repair (Sectional Point Repair)

Not every pipe needs a full-length fix. When a problem is limited to one isolated section — a single crack, an offset joint, a root intrusion point — a spot repair applies the same CIPP resin-and-liner technology, but only over that specific defect, typically 2 to 10 feet of pipe. It’s faster and less expensive than relining or replacing the entire run, and NASSCO explicitly recognizes trenchless spot repairs as a distinct rehabilitation category from full-length CIPP.

• Best for: one clearly isolated defect in an otherwise sound pipe, confirmed by camera inspection.
• Not a fit for: pipe with multiple defects spread along its length — at that point, full lining is usually more cost-effective than several spot repairs.

Not sure which method fits your situation? A camera inspection is the only way to know for certain. NGI Trenchless Pipe & Sewer Repair offers camera inspections before every repair recommendation. Call (404) 682-2998.

Open Cut (Traditional Excavation)

Open cut is the traditional method: dig a trench the length of the damaged section, expose the pipe, and physically remove and replace it. It’s more disruptive to landscaping, driveways, and hardscaping than any trenchless method, and it typically takes longer and costs more in restoration once the trench is backfilled. Even so, it remains the right call in specific situations. Our pipe repair page covers when our team recommends traditional repair over trenchless options.

• Best for: pipe that’s severely collapsed, badly misaligned, or in a location where a trenchless method can’t safely access or bond to the existing line.
• Not a fit for: most routine repairs — trenchless methods now cover the majority of sewer line problems that used to require excavation.

How a Camera Inspection Determines the Right Method

Every one of these methods depends on first knowing exactly what’s wrong with the pipe — its material, the type and location of the defect, and whether it’s still structurally round. That’s what a sewer camera inspection establishes before any repair method is chosen. Skipping this step and guessing at a method is one of the most common ways homeowners end up paying for the wrong fix.

Sewer Line Repair Methods at a Glance

•       CIPP lining creates a new pipe inside the old one — no excavation, best for structurally sound pipe with cracks or corrosion.
•       Pipe bursting replaces the pipe entirely through two small access pits — best for pipe too damaged to line.
•       Spot repair fixes one isolated defect without relining or replacing the whole run — fastest and least expensive when it applies.
•       Open cut excavation is still sometimes necessary for severely collapsed or inaccessible pipe, but covers a shrinking share of repairs.
•       Next step: contact NGI Trenchless for a camera inspection to determine which method fits your pipe.

Frequently Asked Questions

Is CIPP lining as strong as a brand-new pipe?

Yes. A properly cured CIPP liner forms a seamless, jointless structural pipe within the old one, with a typical service life of 50 years or more — comparable to a new pipe installation.

How do I know if my pipe needs pipe bursting instead of lining?

If a camera inspection shows the pipe is collapsed, severely bellied, or missing sections, it generally can’t accept a liner and needs pipe bursting instead. Pipe bursting is also the only trenchless method that can upsize the pipe diameter if more capacity is needed.

Is spot repair cheaper than lining the whole pipe?

Yes, when it applies. Because spot repair only treats a short section (typically 2-10 feet) rather than the full pipe run, it costs less and takes less time than full-length CIPP — but only works when the damage is genuinely isolated to one area.

When is open cut excavation actually necessary?

Open cut is still the right call for pipe that’s too severely collapsed or misaligned for trenchless methods to bond to, or in rare situations where site access makes a trenchless method impractical. For most routine repairs today, trenchless methods are viable.

Can I choose the repair method myself, or does the contractor decide?

A reputable contractor will base the recommendation on what a camera inspection actually shows about your pipe’s condition, not a default preference. It’s reasonable to ask why a specific method was recommended and what the camera inspection revealed.

Related Resources

• Trenchless Pipe Lining
• Sewer Pipe Replacement
• Trenchless Sewer Pipe Repair
• Pipe Repair
• How Does Pipe Camera Inspection Work?

The right repair method comes down to what’s actually happening inside your pipe — not a one-size-fits-all default. NGI Trenchless Pipe & Sewer Repair starts every job with a camera inspection so the recommendation matches the real condition of your line. Contact us today to schedule one.

About NGI Trenchless Pipe & Sewer Repair: NGI Trenchless Pipe & Sewer Repair provides trenchless and traditional sewer repair, drain cleaning, and pipe inspection services across Metro Atlanta, including Roswell, Marietta, Alpharetta, Sandy Springs, Johns Creek, and Cherokee and Fulton Counties. Call (404) 682-2998.