Pipe Lining vs Pipe Bursting

Lining and bursting are both trenchless, and they are not interchangeable. The sewer line replacement cost guide prices every method. This page is only the choice between these two.

CIPP lining cures a resin liner inside the old pipe. The old pipe must stay round enough to be the mold. Pipe bursting breaks that old pipe apart and pulls a new one through. A cleanout is a capped access point. A belly is a sag that holds waste. Both methods struggle with a belly, because they follow the old path.

Cost side by side

Lining is the lower rate. On this 50-foot example the gap is real, and it is not huge next to the width of a dig-plus-restoration bid. See pipe bursting cost and the trenchless repair page for each method alone. The how-it-works page covers pits, the camera, and the test at the end.

When each one works

Pick lining when the camera shows cracks, leaks, or moderate roots and the pipe is still intact. Pick bursting when the pipe is collapsed or badly deteriorated and you need a full replacement. Pick a dig if the slope is wrong or a belly has to go away.

Orangeburg that has flattened cannot host a liner. Cast iron can, if the wall is still a pipe and not a line of flakes. Clay often fails at the joints, which can be a lining case when the barrel is sound. None of those material names replaces the video.

Sharp bends can force an extra pit for either method. Ask the bidder to mark pits on a sketch. Two pits are normal. A surprise third pit is how a tidy per-foot rate grows.

How long they last

Bursting installs a brand-new pipe, usually HDPE (high-density polyethylene), a flexible plastic pulled in as one fused length. The pipe is already included in the bursting rate, so there is no separate material line to add.

Lining creates a new inner pipe inside the old one. Liner products vary by brand. For both methods, ask for the product name, its rated life, and the warranty in writing. The warranty on your quote is the number you can hold the installer to; a longer slogan in a brochure is not a longer warranty.

Which one saves more

The cheaper method is the one that matches the pipe. Lining "saves" money only if you do not pay for it twice after a collapse. Bursting costs more per foot and avoids a host-pipe failure.

According to a trenchless repair company, trenchless work can be about 30–50% less than digging after restoration. That company sells trenchless repair. Use the percent to remember to compare a dig bid that includes the yard, not as a coupon.

A dig with heavy restoration on 50 feet in a Midwest suburb is about $8,700–$32,000. Bursting without that restoration is about $7,700–$11,000. Lining is about $7,000–$9,000. If the pipe can be lined, lining is the low total in that set. If it cannot, the lining number is irrelevant.

Worked example

Here is one 60-foot line on a suburban lot in the West Coast region, priced both ways with an inspection and a permit.

The difference on the low end is $1,100. That gap is smaller than the cost of a wrong method. A liner in a collapsed pipe is not a $1,100 saving. It is a do-over.

How to save money

• Ask each bidder to explain, in writing, why their method fits your pipe better than the other one.
• Get a lining price and a bursting price only if both are technically possible.
• Get a dig price with restoration if the slope is in doubt.
• Ask for the warranty in the contract, not in the sales line.
• Mark the pits on paper so driveway patches are not a surprise.