Trenchless methods
Sewer pipe repair in Denver
Sewer repair in Denver covers everything from a floor drain that backs up at midnight to a lateral a buyer's inspector has just condemned. This page describes how a failing line is diagnosed, which repairs apply to which failures, and the cases where the right plan pairs a small dig with a trenchless method rather than choosing one or the other.
Serving Denver · Denver County
All Sewer and Plumbing Services, LLC
CIPP Verified installer. Camera inspection before any quote; permits and inspections handled. More about All Sewer and Plumbing Services →
First, the backup
Most sewer repairs in Denver begin with an emergency. A basement drain overflows, a toilet will not clear, or the lowest shower in the house fills with gray water when the washing machine empties. The first job is to get the line flowing, with a jetter or a cable, so the house is livable. The second job, the same visit if possible, is to run a camera from the house to the main and find out why it happened. Diagnosing from the symptom alone is where bad repairs come from, and in Denver the symptom is the same whether the cause is roots in a 1915 clay joint under Baker, an ovaled Orangeburg run under a 1956 ranch, or a rusted-through iron invert under a slab. Each of those calls for a different repair.
Reading the failure
The inspection video sorts the lateral into one of a few conditions. Open joints, roots and cracks in a line that has kept its shape point to a cured-in-place liner. A collapse, a flattened section or a line too small for the house points to pipe bursting. One bad joint in an otherwise sound run points to a sectional point repair. A belly that holds water, a crushed stub at the foundation wall or a broken tap at the main points to a short, targeted excavation. Many Denver laterals present two of these at once, for example a sag near the house and roots everywhere else, and the correct plan combines a dig for the first with a liner for the second. The methods and their limits are explained independently at the CIPP reference, which is a fair way to check whether a proposal matches the footage.
Where the dig stays small
A targeted excavation is a few feet long and goes exactly where the locator put the defect. At the foundation it replaces the crushed stub and installs a proper cleanout, which many older houses in Denver never had. At a belly it lifts and re-beds the sagging section on compacted material so the new grade holds in the clay soil. At the main it rebuilds the tap under the city's inspection. The rest of the line, including everything under the lawn, the garage apron, the alley and the street, is then lined or burst through the opening the dig provides. The alternative, trenching the full run, means a right-of-way permit for the open cut, traffic control, a restoration bond and a week of disruption for the neighbors, and in an alley it means losing garage access for the whole block.
The Denver conditions that cause the failures
- Expansive clay that lifts the pipe in wet months and drops it in dry ones, working mortar and tar joints loose over decades.
- Freeze-thaw heave in the top few feet near the house, where the stub leaves the foundation.
- Cottonwood, elm, silver maple and ash roots drawn to a leaking joint in a climate that gives them little other water.
- Orangeburg's slow loss of shape under soil load in the post-war tracts.
- Summer cloudbursts and hail runoff that surcharge the combined sewers of the central city and push flow back toward low laterals.
- Vehicle loads on alley aprons and driveways built over shallow clay laterals.
Permits and timing
Any repair to the lateral inside the city requires a Sewer Use and Drainage Permit, which the Department of Transportation and Infrastructure issues and the installer applies for. Work that occupies the alley, sidewalk or street, including a pit at the main, needs a right-of-way permit in addition. Properties in Denver County but outside the city limits are permitted by their own sanitation district. Emergency clearing happens the same day or the next morning; the camera and the written finding follow; and the repair itself, for a single-family lateral, is usually one working day in any season.
The installer and the record
the verified installer covering Denver handles the emergency call, the inspection, the combined dig-and-trenchless plan where one is needed, and the permits, and delivers the pre- and post-repair video with the warranty. Verification under the standard at the verified installer directory means the lining work has been checked for materials, training and inspection practice. For a house that will be sold, that package answers the buyer's sewer scope before it is ordered.
Estimates are free. Call now: (720) 606-6223.
Other trenchless services in Denver
Trenchless Sewer Repair Denver
Repair or replace a failed sewer line with little or no excavation.
Sewer Pipe Lining (CIPP) Denver
A resin-saturated liner cured in place forms a new, jointless pipe inside the old one.
Pipe Bursting Denver
A bursting head splits the old pipe while pulling new HDPE pipe in behind it, through two small pits.
Sectional Point Repair Denver
A short liner fixes one bad spot and leaves the rest of a sound line alone.
Sewer Camera Inspection Denver
See what is actually wrong before anyone quotes a fix.
Hydro Jetting Denver
High-pressure water strips roots, grease and scale so the pipe can be inspected and lined.
Questions we hear about sewer line repair & replacement
What are the warning signs of a failing sewer line in Denver?+
Drains throughout the house slowing at once, a floor drain or basement shower backing up when the washer runs, gurgling toilets, a sewer smell in the yard or a patch of lawn that stays green through August, and backups that follow summer cloudbursts. Any one of them in a house built before 1970 is a reason to put a camera in the line.
Can a sewer line be repaired in winter in Denver?+
Yes. The lateral lies below frost depth, liners cure on heat or UV light, and a bursting pull does not care about the temperature. Only a repair that needs a pit is slowed by frozen ground, and even that is a matter of an extra hour with the right equipment.
When is digging the right answer?+
When the camera shows a sag deep enough to hold standing water, a crushed section at the foundation, or a failed tap at the main. In those cases a short excavation fixes the spot and a liner or a bursting pull handles the rest of the run, so the hole stays a few feet long instead of the length of the yard and the alley.
Who owns the sewer line under the alley behind my house?+
The property owner does, all the way to the tap on the main. The city maintains the main. In the older Denver grid the main is often in the alley, so the owner's line passes under the alley surface, and keeping that surface intact is where a trenchless repair earns its price.
How do I get a price?+
Use the form or ring (720) 606-6223, and say if the line is backed up right now. The installer opens the line if needed, inspects it by camera, gives you the recording and a written finding, and prices the repair from what the video shows. Estimates are free; call now.