Trenchless methods
Sewer pipe lining in Denver: a new pipe cured inside the old one
Cured-in-place lining fixes the failure most Denver laterals actually have: joints in clay tile opened by moving soil and filled with roots. This page covers qualification, the day of the install, how the cure works in a Front Range winter, and what to look for in the finished video.
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 →
Why lining fits Denver laterals so often
The typical pre-1960 lateral in Denver is still round. Seventy years of bentonite clay swelling and shrinking has pried its joints apart and dropped a few of them a half inch, and roots from the parkway trees have grown into every opening, but the tile itself is usually intact. That is precisely the pipe a liner is for. The old clay becomes the mold; the new pipe is a resin tube cured hard against it, sealing every joint and crack in one piece from the house to the main. Cast iron under the basement, with its rough and thinning bottom, lines just as well once it is cleaned. The pipes that do not qualify are the ones that have lost their shape or their grade, and the camera finds those before anyone orders a liner.
Measuring and cleaning first
A liner is cut and wet out for one specific Denver lateral, so the first visit is about measurement as much as inspection. The crew jets the line to bare pipe, runs the camera with a locator, and records the material, the diameter, the footage to every branch and to the main, and the depth at the connection. Roots are cut back to the wall. Heavy scale in cast iron is removed with a chain or descaling head. Any section the camera cannot pass, or any standing water that does not drain, is noted as a problem the liner cannot solve, and the proposal says so.
The install day
For most Denver houses the work happens from an existing cleanout or a small pit at the foundation wall, and the yard between there and the street is untouched. The resin-saturated tube is inverted with air or water pressure, or pulled into place with a winch, until it reaches the tap at the main. It is then inflated against the host pipe and cured. Hot water circulates for a few hours; steam is faster; UV light cures a fiberglass liner as a light train is drawn back through it. A residential run is usually in and cured in a single working day, and the household is asked not to run water during that window. Once hard, the ends are trimmed and each branch, including the connection to the main where the liner ends, is reopened with a robotic cutter guided by camera.
Winter in Denver County and the cure
Lining does not pause for the season. Hot-water and steam cures bring their own heat, and the pipe four feet down sits below the frost in all but the hardest Denver winters. The practical differences are a longer warm-up for the resin, a tent over the inversion point on a bitter day, and a frozen top foot at the pit. Owners who find roots in October do not have to wait until April; a jetting holds the line, and the liner goes in on a scheduled day.
What the finished video should show
The post-repair camera run is the proof. The wall should be smooth and uniform from end to end with no wrinkles or fins at the old joints. Each branch should be fully open with a clean edge. The far end at the main should show the liner terminating neatly at the tap with no lip to catch paper. Where the old pipe had a slight dip, a small amount of standing water may remain and the video should show it draining. Compare the footage counter against the first video so you know every defect you saw is now under liner. The independent description of these checks is at the cured-in-place pipe reference.
Warranty, permit and the file you keep
A lateral permit is required for lining in most Front Range jurisdictions, and the inspector may review the video rather than an open trench. Keep the permit record, both videos, the cure log and a written warranty that names the method, the length lined and the term, and that transfers with the house. Liners are rated for a design life of about fifty years, so this file will outlast your ownership. the All Sewer and Plumbing Services, LLC sewer lining page serving Denver explains how All Sewer and Plumbing Services, LLC schedules and installs liners in Denver, and the installer's verified status is at All Sewer and Plumbing Services, LLC's verified CIPP installer profile. For a camera run and a lining proposal, call (720) 606-6223. Estimates are free. Call now.
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.
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.
Sewer Line Repair & Replacement Denver
When a line cannot be lined: spot excavation or trenchless replacement, chosen from the footage.
Questions we hear about sewer pipe lining (cipp)
Will the liner stop roots for good?+
Yes, along the lined length. Roots enter at joints and cracks, and a liner has neither; it is one continuous tube from the entry point to the main. Roots in Denver will still grow around the outside of the old pipe, but they have nothing to enter. The warranty should cover root intrusion into the lined section for its full term.
Can a lateral with a belly be lined?+
The liner follows the pipe, so it follows the belly too, and the low spot keeps holding water and solids. Lining a belly is the most common trenchless mistake on the Front Range because heaving clay creates so many of them. The right sequence is to excavate and regrade the sunken section, then line the rest.
Does the liner reduce flow?+
The liner takes a small fraction of an inch off the inside diameter of a four- or six-inch lateral, and the smooth, jointless wall carries flow better than rough clay or scaled cast iron. Flow capacity only matters on a line that was already too small, where bursting with an upsize is the better choice.
Can you line through the cast iron under my basement floor?+
Yes. Cast iron that has scaled and thinned is cleaned by jetting or descaling and then lined like any other host pipe, and the liner stops further corrosion. The transition from cast iron to clay at the foundation wall, a common leak point in Denver County houses, is covered by the same continuous liner.
How do I know the liner cured properly?+
Ask for the cure record, which shows temperature and time, and watch the post-repair video for a smooth, wrinkle-free wall with every branch reopened. A liner that cured short feels soft and shows ripples; a good installer would cut it out and redo it before leaving. The written warranty backs the finished result. Estimates are free; call now.