Drain Relining in Bournemouth: No-Dig Repairs Explained
If a CCTV survey has just told you there's a cracked drain under your Bournemouth garden, here's the reassuring bit: most of them never need digging up. Drain relining lets us repair the pipe from the inside, working through the existing manholes, and it's now the first option we look at on drain repair jobs across Bournemouth, Poole and Christchurch.
This post covers what relining actually is, when it's the right fix, what it costs in 2026, and where we'd still reach for a spade.
What drain relining actually is
Relining (the trade calls it CIPP, cured-in-place pipe) means feeding a resin-soaked felt or fibreglass sleeve into the damaged drain and curing it hard against the inside of the old pipe. What you end up with is a smooth, jointless new pipe inside the old one. The bore is slightly smaller, but in practice it flows better than the original because there are no open joints for paper and debris to catch on. A properly installed liner is designed to outlast the house's next few owners.
There are two ways we install it. For a single crack, a displaced joint or a small root hole, we use a localised patch: a short sleeve, usually half a metre to a metre long, pushed into position on an inflatable packer and cured in place. For a run that's cracked in several places, or an old clay pipe that's failing along its whole length, we line the full section from chamber to chamber, normally by inverting the liner with air or water pressure so it turns itself inside out along the pipe.
Why Bournemouth drains fail the way they do
A lot of Bournemouth's older housing, from the Victorian terraces in Boscombe and Springbourne to the 1930s semis around Winton, Moordown and Southbourne, still runs on its original salt-glazed clay drains. Clay is brittle, the joints were sealed with mortar that crumbled decades ago, and once a joint opens up you get two problems at once: the pipe leaks into the ground, and roots find their way in.
Roots are the big one here. The mature pines and oaks that make Talbot Woods, Branksome Park and the chines so pleasant to live near are also the most common cause of the drain faults we survey. A hairline crack that's been weeping for a few winters is an open invitation, and by the time the drain actually backs up there's often a root mass at three or four joints. Bournemouth's sandy, free-draining ground doesn't help either. It lets water and fine material wash out around a leaking joint, so the pipe loses its bedding and starts to sag or step at the joints.
When we reline and when we dig
Full reline when the pipe still holds its shape, the damage is cracking, open joints, root intrusion or minor displacement, and there's access at both ends of the run.
Localised patch when it's one or two isolated defects on an otherwise sound run. This is the cheapest fix there is, and the one we'd rather do early than a full reline later.
Excavate and replace when a section has collapsed or is badly deformed (a liner can't bridge a missing pipe), when the run has a back-fall and needs re-laying to a proper gradient, or when the drain is shallow and in open lawn, where digging is simply the quicker, cheaper answer.
We always survey before quoting. The camera tells us the pipe diameter, exactly where each defect sits in metres from the chamber, and whether the pipe is still round enough to line. We won't price a relining job blind, because a liner pushed into a collapsed pipe is money down the drain, and we'd rather tell you that upfront than find out on the day. Our drainage and civil works team does the survey, the jetting, the lining and any excavation, so there's no handover between companies and no one blaming someone else's work.
What drain relining costs in Bournemouth in 2026
The figures below are what we'd typically charge in Bournemouth and across the conurbation, with our margin included, so they're real customer prices rather than trade rates. Every job is still priced from its own survey, and we'll give you the footage so you can see what you're paying to fix.
CCTV survey with a written report and defect log: £180 to £420, depending on how many runs and chambers the property has.
Localised patch repair, one defect, no digging: £420 to £600 per patch, with a second patch on the same visit costing less than the first.
Full relining of a standard 100mm domestic drain: £95 to £180 per metre, so a typical 10-metre run from the house to the boundary chamber comes in around £1,000 to £1,800.
Larger 150mm shared or main runs: £145 to £205 per metre.
Excavation and replacement of a collapsed section in open ground: £1,800 to £3,600, and add £600 to £2,400 if it's under a driveway, patio or extension, for breaking out and reinstating properly.
What pushes those numbers up: a heavy root mass that needs mechanical cutting before the liner goes in, extra depth, a run with no second access point (we sometimes need to install a new inspection chamber first), and a drain on a shared boundary where a neighbour's agreement is needed. What keeps them down is catching it early, while it's one patch rather than a whole run.
How the job runs on the day
Jet the run clean and re-survey it. Any roots get cut out with a mechanical cutter at this stage.
Measure and cut the liner to length, then impregnate it with resin. We do this on site, from the van, so it's matched to that pipe rather than pre-cut to a guess.
Install: invert or winch the liner into position and inflate it against the pipe wall.
Cure. Ambient or hot-water cure takes roughly two to four hours depending on the resin and the temperature. Autumn in Bournemouth is fine for it; we just allow a little longer than we would in July.
Reopen any lateral connections with a robotic cutter, then run a final CCTV pass and hand you the before-and-after footage.
Most domestic relining jobs are finished in a single day, with no digging, no skip and none of your paving lifted. You'll be asked not to run water to that drain for a few hours while it cures, and that's about the extent of the disruption. If a dig does turn out to be necessary, our building team handles the excavation and the making good, so your driveway or patio goes back exactly as it was.
Book a drain survey in Bournemouth
If you've got a slow-draining sink, a damp patch by the side of the house that never dries out, or a homebuyer's report that's flagged the drains, the first step is a CCTV survey so we can tell you straight whether it's a patch, a full reline or a dig. Complete Builds handles the whole job in-house across Bournemouth, Poole, Christchurch and the wider Dorset and Hampshire area. Book a drain survey with Complete Builds and we'll get a camera down it and a clear price back to you.
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