A damaged sewer line does not have to mean a destroyed yard, a torn-up driveway, or weeks of disruption. Trenchless pipe and sewer repair gives Longmont homeowners a way to fix the problem from the inside out — no major digging required. At Welzig Heating, Air, Plumbing & Electric, our licensed plumbers use the latest no-dig technology to diagnose and repair sewer line damage quickly, cleanly, and with lasting results. Serving Longmont and the greater Boulder area since 1994, we are the local team you can count on when things go wrong underground.
Signs You May Have a Sewer Line Problem
Sewer line damage rarely announces itself all at once. More often, it shows up gradually through symptoms that are easy to dismiss — until they get worse. If you are experiencing any of the following, a sewer camera inspection can tell you exactly what you are dealing with in a matter of minutes:
- Recurring drain backups or slow drains throughout the home
- Sewage odors in the yard, basement, or around floor drains
- Soggy or unusually green patches in the lawn
- Gurgling sounds coming from toilets or drains
- Root intrusion returning after repeated cleanings
Common causes include tree root intrusion, corrosion in older cast iron or clay pipe, cracked or collapsed sections, pipe bellies (low spots where waste pools), and deteriorating Orangeburg pipe — a fiber-based material found in many mid-century Colorado homes that breaks down over time.
What Is Trenchless Sewer Repair?
Trenchless sewer repair is exactly what it sounds like — fixing or replacing a damaged pipe without digging up your property. Instead of excavating a trench the length of your sewer line, our technicians gain access through existing cleanouts or small entry points and rehabilitate the pipe from the inside. Your landscaping, driveway, patio, and slab stay intact.
The result is a fully restored sewer line with a lifespan of 50 years or more — often installed in a single day.
Benefits and Limitations
Trenchless repair offers significant advantages over traditional excavation:
- Minimal disruption to your yard, driveway, and landscaping
- Faster completion — most jobs are done in one day
- Lower total cost when you factor in landscape restoration and concrete work
- Environmentally friendlier with less soil disturbance
- A durable, seamless interior lining that resists future root intrusion and corrosion
That said, trenchless lining is not the right solution in every situation. If a pipe has fully collapsed or is severely misaligned, it may not be possible to thread a liner through it. In those cases, pipe bursting or targeted excavation may be the better path. We will always tell you honestly which method fits your situation — and why.
The Two Main Trenchless Methods
Cured-In-Place Pipe Lining (CIPP)
CIPP is the most common trenchless repair method and works on pipes that are damaged but still structurally intact enough to hold their shape. A resin-saturated liner is inserted into the existing pipe and expanded to fit snugly against the interior walls. Once cured — either with hot water, steam, or UV light — it hardens into a smooth, jointless new pipe within the old one. The result is often referred to as a “pipe within a pipe.” CIPP is ideal for cracked pipe, root intrusion, corrosion, and leaking joints, and works well under driveways, slabs, patios, and landscaping where excavation would be especially costly or disruptive.
Pipe Bursting
When a pipe is too structurally compromised to be lined — heavily deteriorated, partially collapsed, or made of a material that cannot support a liner — pipe bursting offers a full replacement without digging a trench. A bursting head is pulled through the existing pipe, fracturing it outward while simultaneously pulling a new pipe into place behind it. The old pipe is destroyed and replaced in a single pass. Pipe bursting restores full pipe diameter and is a strong option when the existing pipe is beyond rehabilitation.
How the Process Works
Step 1: Camera Inspection
Every trenchless job starts with a thorough sewer camera inspection. We run a high-definition camera through your line to identify the exact location, type, and extent of the damage. This tells us which repair method is appropriate and gives you a clear picture of what is happening underground before any work begins.
Step 2: Hydro-Jetting and Cleaning
Before any liner can be installed, the pipe must be clean. We use hydro-jetting — high-pressure water — to clear roots, grease, debris, and buildup from the pipe walls. A clean pipe ensures the liner bonds properly and performs as intended.
Step 3: Liner Installation and Curing
The resin-saturated liner is inserted and positioned, then inflated to press firmly against the pipe walls. It is then cured in place, hardening into a rigid, seamless new surface inside your existing pipe.
Step 4: Final Inspection and Testing
Once cured, we run the camera through again to confirm the liner is properly bonded, fully sealed, and free of defects. You get a written report and the confidence of knowing the job was done right.
Common Questions About Trenchless Sewer Repair
Is trenchless sewer repair worth it?
In most cases, yes — especially when the damage is under a driveway, patio, deck, or landscaped area. Traditional excavation requires not just digging but full restoration of whatever was on top. When you factor in concrete work, landscaping, and the time involved, trenchless repair is often the more cost-effective option despite a higher upfront price per linear foot. Add a 50-year lifespan for the lining and it becomes an easy choice for most homeowners.
Can a sewer line be replaced without digging?
Yes. With pipe bursting, a new pipe is pulled into place as the old one is fractured outward — no trench required. Access is made through small entry points at each end of the line, leaving the rest of your property undisturbed.
How long does a trenchless sewer lining last?
A properly installed CIPP lining is rated to last 50 years or more. The cured resin creates a smooth, jointless surface that is highly resistant to root intrusion, corrosion, and cracking.
Does homeowners insurance cover broken sewer pipes?
Standard homeowners insurance typically does not cover sewer line damage — but many insurers offer a service line endorsement that does. Check your policy or call your agent. If you have a home warranty, that may cover sewer line repairs as well. We can provide documentation to support your claim.
What is pipe lining?
Pipe lining is a repair method in which a resin-saturated tube is inserted into a damaged pipe and cured in place, forming a hard, smooth new surface inside the original pipe. The damaged host pipe essentially becomes the outer shell, and the new lining becomes the working pipe. No removal, no replacement — just rehabilitation from the inside.
Can I do pipe lining myself?
No. CIPP lining requires specialized equipment for insertion, inflation, and curing, as well as camera inspection and hydro-jetting before and after. Improper installation can result in liner failure, voids, or a lining that does not adhere — leaving you with a bigger problem than you started with. This is a job for licensed professionals with the right tools and experience.
Ready to Fix Your Sewer Line Without Major Digging?
If you are dealing with recurring backups, sewer odors, or root intrusion in Longmont or the surrounding area, do not wait for a full collapse. A sewer camera inspection gives you a clear diagnosis and a written estimate — fast.
Ready to get started? Book your trenchless plumbing online or give us a call at (720) 336-3777. We serve Longmont, Boulder, Fort Collins, Erie, Lafayette, and surrounding communities across northern Colorado.
