CIPP Lining — Duluth · Superior · Hermantown · Cloquet

CIPP Pipe Lining in Duluth, MN

Pipe rehabilitation from the inside out. No excavation, no disruption, no guesswork.

Call 218-453-4073 How it works
CIPP pipe lining work in Duluth MN by Contour Inc.
Trenchless pipe rehabilitation — Duluth, Superior, and the Twin Ports

Fix the pipe without touching the yard.

CIPP (Cured-In-Place Pipe) lining is a trenchless method for rehabilitating damaged sewer lines from the inside. A resin-saturated liner is inserted into the existing pipe, shaped to the pipe walls, and cured in place. The result is a new, seamless pipe inside the old one — without any digging.

We serve Duluth, Superior, Hermantown, Cloquet, Proctor, Two Harbors, and Ashland. Licensed and bonded in Minnesota and Wisconsin.

Camera inspection before every job
No excavation required in most cases
Liner rated for 50+ years of service life
Works on sewer, drain, and lateral lines
Contour Inc. trenchless sewer lining in Duluth MN
"We find the problem first, then fix it once."
How it works

Our CIPP lining process

Camera in first. Liner in second. Done right the first time.

01

Camera inspection

We run a sewer camera through the pipe before any work begins. This tells us exactly what we are dealing with — cracks, root intrusion, offset joints, or corrosion — and confirms that CIPP is the right solution.

02

Pipe cleaning and prep

The pipe is cleaned by hydro jetting to remove buildup, roots, and debris. A clean surface is required for the liner to bond correctly. We do not skip this step.

03

Liner sizing and staging

The liner is measured and cut to the exact length of the damaged section. The resin is mixed and saturated into the liner on site before insertion.

04

Liner insertion and curing

The saturated liner is inserted into the host pipe and inflated to conform to the pipe wall. It is then cured using hot water or UV light, hardening into a new structural pipe.

05

Final camera and sign-off

After curing, we run the camera again to confirm full coverage, proper sealing, and that all connections are clear. You see the before and after footage.

Common questions

CIPP Lining FAQs

What is CIPP lining and how does it work?

CIPP stands for Cured-In-Place Pipe. A fiberglass or felt liner saturated with resin is inserted into the existing damaged pipe, inflated to press against the pipe walls, and then cured using heat or UV light. The result is a new, seamless pipe formed inside the old one without any digging.

How long does a CIPP liner last?

CIPP liners are rated for 50 years or more when properly installed. The liner becomes a structural pipe in its own right and is not affected by the deterioration of the host pipe around it.

Does CIPP lining require digging?

In most cases, no. CIPP is a trenchless method, meaning we access the pipe through existing cleanouts or a single small access point. Some situations require limited excavation if there is no accessible entry point, but full-length trenching is rarely needed.

What pipe problems can CIPP fix?

CIPP is effective for cracked pipes, root intrusion, corroded or deteriorated pipe walls, offset joints, and minor collapses. It works on clay, cast iron, PVC, and concrete pipe. A camera inspection determines whether the pipe is a good candidate.

Do you serve Superior and Hermantown for CIPP lining?

Yes. We provide CIPP pipe lining throughout Duluth, Superior, Hermantown, Cloquet, Proctor, Two Harbors, and Ashland. Licensed and bonded in Minnesota and Wisconsin.

How we approach every new build

Why we always meet with the foundation crew before a machine moves.

After ten-plus years of combined foundation and excavation work, Josh and Brian kept seeing the same pattern: when a site prep project goes wrong, it traces back to poor communication before the first machine moved.

Drainage, soil conditions, and grade are not details you assess from a plan. A plan is a starting point. The ground is the reality.

We do a pre-job site visit on every new construction project. We walk the lot, talk through drainage, and make sure every contractor coming in after us knows exactly what they are building on.

Talk to us about your project
Contour Inc. excavation team in Duluth MN
10+
Years in foundation
and excavation