In many cases, yes — a broken or deteriorating sewer line can be repaired without traditional open excavation, using a method called cured-in-place pipe lining, or CIPP. Instead of digging a trench the length of your sewer line through your yard, driveway, or landscaping, a technician inserts a flexible, resin-saturated liner into the damaged pipe from an access point, inflates it against the pipe walls, and cures it in place to form a new, seamless pipe inside the old one. Done offers trenchless sewer repair as part of our full-service drain and sewer work across the Denver and Front Range area.

What Is Trenchless Sewer Repair and How Does It Work?

Trenchless sewer repair is an umbrella term for techniques that restore a damaged pipe from the inside, without excavating the entire run. The most common method for residential sewer lines is cured-in-place pipe lining (CIPP). Here’s the general process:

  • A technician first clears the line — often with hydrojetting — to remove roots, grease, and debris so the liner can seat properly
  • A flexible liner saturated with epoxy or resin is pulled or inverted into the existing pipe from an access point such as a cleanout or through a small excavated pit
  • The liner is inflated against the interior walls of the host pipe and held in place while the resin cures (via hot water, steam, or UV light depending on the system)
  • Once cured, the result is a smooth, jointless “pipe within a pipe” that seals cracks, root intrusions, and small collapses and restores full flow capacity
  • Lateral connections are reopened from inside the pipe using a robotic cutter

Done’s pipe lining service uses this CIPP method for qualifying sewer lines. The finished liner is rated for decades of service life and is resistant to root re-intrusion because the smooth epoxy interior offers no joints for roots to exploit.

Why Is Trenchless Repair Particularly Valuable in Colorado?

Colorado’s soil conditions make traditional excavation more complicated — and expensive — than in many parts of the country. The Front Range sits on a mix of expansive clay and sandy soils that shift significantly with freeze-thaw cycles. Those soil movements are one of the leading causes of sewer line cracking and joint separation in the Denver metro: the pipe was laid straight, then the ground moved around it over years of Colorado winters and dry summers, leaving offsets, bellies, and cracks.

Digging through that clay — or through an established lawn, mature landscaping, a concrete driveway, or a patio — is disruptive and can take days to restore. Trenchless lining typically requires only minimal access points, which means your yard, hardscape, and landscaping stay largely intact. For Denver homeowners with mature trees (whose roots are often part of the problem), avoiding a full excavation also avoids unnecessary damage to root systems.

When Is Trenchless Lining the Right Solution?

Trenchless pipe lining works well for sewer lines that are cracked, have root intrusion, show joint separation, or are corroded — but where the pipe still has enough structural integrity to hold the liner during installation. It is generally a good candidate when:

The pipe diameter and run length fall within the system’s specs (most residential sewer lines qualify), the host pipe is not fully collapsed or severely offset (a significant belly or complete structural failure may still require spot excavation or full replacement), and the issue is limited to the pipe itself rather than a collapsed section beneath a foundation or slab that needs structural reinforcement.

Our sewer services team will evaluate your specific line and give you an honest recommendation. Not every damaged line qualifies for lining, and we’d rather tell you that upfront than start a job that can’t be completed as planned.

What Are the Signs You May Have a Broken Sewer Line?

Sewer line problems often announce themselves gradually before they become an emergency. Common warning signs in Denver-area homes include slow drains throughout the house (not just one fixture), sewage odors in the yard or near cleanouts, soggy or unusually green patches in the lawn over the sewer line’s path, gurgling sounds when you flush or drain water, and recurring backups even after drain cleaning. Older homes in neighborhoods like Washington Park, Highlands, Park Hill, and Capitol Hill may have original clay or cast-iron sewer lines that are well past their design life and showing these symptoms regularly.

If you are experiencing any of those signs, the sooner you have the line evaluated, the more likely a less invasive repair option — like lining — is still on the table. A collapsed or fully offset pipe typically requires excavation, which is more disruptive and more costly.

How Much Does Trenchless Sewer Repair Cost?

Cost depends on the length of pipe being lined, the pipe diameter, access conditions, whether pre-lining cleaning or root cutting is required, and the extent of the damage. Trenchless lining is often comparable to or less expensive than traditional excavation once you factor in restoration costs — resodding, replanting, repaving, or repairing concrete. Because there is no trench to dig or fill, labor time is typically reduced significantly.

Done provides free estimates so you can see the numbers before committing. Financing is also available through our financing page for larger sewer repairs. Whether your line qualifies for no-dig lining or needs a different approach, our drains and sewer team will walk you through your options clearly and without pressure — call us to schedule an evaluation and get a straight answer about what your line needs.