No-dig pipe repair on the Lower North Shore.
Cracked or root-damaged pipe repaired in place in Cammeray — sealing the line against the ground rather than digging it out of it.
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Cammeray’s steep terrain held back its development, and when the estates went in through the 1920s the drainage had to follow that topography. Flat Rock Creek and the gully country on the eastern side keep the ground moving, and movement is what opens a mortared joint. Once open, a joint takes water in as readily as it lets waste out — so the fault is often ingress rather than obstruction, and only a continuous liner addresses it.
Open or offset joints in 1920s earthenware taking storm and ground water, often along a run rather than at one point. Gully movement spreads the damage.
Because the ground here is the problem, and digging into it makes it worse. This is the part of a drainage repair people do not price until an excavator is already on site.
Mature garden planting through the 1920s estates, with a century of growth over lines that were laid when the streets were. On gully-side blocks the trench also gets deeper the further down the run the fault sits.
A liner goes in through an opening that already exists. Nothing above the pipe has to move.
Steep gully country at 87 metres across 1.5 square kilometres, with frontage to Long Bay. Excavating ground that moves and periodically carries water is slow, needs support and backfills unpredictably.
Cammeray sits in the North Sydney Council, postcode 2062.
Local figures sourced from: ABS 2021 Census QuickStats — Cammeray · Cammeray, New South Wales — Wikipedia
1920s earthenware in short mortared lengths under the interwar estates, now a century old. The 59.6% of dwellings that are flats bring newer stack material and a different failure mode entirely.
No trench, no spoil, and nothing above the pipe disturbed. The whole job runs through an existing access point.
The line is inspected end to end so the damage is located and measured. Nothing is quoted from the surface.
Roots are cut out and the pipe wall is jetted back to bare material — a liner will not bond to a coated pipe.
A resin-saturated liner is drawn into position through an existing access point and inflated against the host pipe.
The resin hardens in hours rather than days, forming a new pipe inside the old one with no joints for roots to re-enter.
Any branch lines are cut back open robotically, and a final camera pass confirms the result.
Not every damaged pipe should be relined, and we will say so. These are the cases where it genuinely wins here.
A liner bridges them permanently; a new jointed pipe does not.
Sealing the run is the fix; clearing it is not.
Trench depth and cost climb together down the fall.
Relining costs more per metre than excavation. It is usually cheaper overall, and this is why:
| Dig and replace | Relining | |
|---|---|---|
| Excavation | Trench the full length, remove and replace the pipe, backfill | None — the work runs through an existing access point |
| What comes up | Lawn, garden, paving, driveway or slab above the line | Nothing |
| Time on site | Days on a long or deep run | Usually one day for a typical run |
| Reinstatement | Priced separately and often the larger half of the bill | Not applicable |
| Result | New pipe, with joints | A jointless liner inside the host pipe |
| Design life | Depends on material and bedding | 50 years on a correctly installed liner |
The per-metre comparison is the one that misleads. Excavation quotes routinely exclude spoil removal and reinstatement, which is where a dig job gets expensive — and on some properties the reinstatement is simply not possible at any price.
These are typical ranges across the Sydney market — not Voyager’s price list, but a realistic yardstick to judge any quote against, including ours.
| Pipe relining, per lineal metre | $450 – $800 |
| Pipe relining, typical whole job | $4,000 – $10,000 |
| Patch repair, single damaged section | $1,500 – $3,000 |
| Junction reinstatement | $300 – $600 |
| Excavate and replace, per metre | $300 – $600 |
| Driveway reinstatement after a dig job, per sqm | $100 – $200 |
| CCTV drain inspection | $250 – $550 |
| Cutting tree roots from a line | $400 – $1,200 |
Voyager prices by the job, not by the hour, so the number you approve is the number you pay. A camera survey happens before any figure is given — a quote for relining that has not looked down the pipe is a guess.
Most Cammeray properties that ring about relining need a camera first. We will tell you straight — including when clearing the line is the whole job.
A correctly installed liner carries a 50-year design life, and it cures in hours rather than days — so the property is back in normal use the same week rather than the same month.
A liner bridges joints that ground movement will keep opening — replacing with another jointed pipe leaves the same failure mode in place.
Roots come back through joints. A liner has none.
Voyager covers the whole Lower North Shore. These are the closest to Cammeray:
No. That is the whole point of it. The liner is drawn in through an existing access point — usually an inspection opening or shaft already on the property — and cured in place against the old pipe. On a gully block it means no trench in ground that moves and periodically carries water.
Across the Sydney market, relining runs about $450–$800 per lineal metre, with a typical whole job landing between $4,000 and $10,000 and a single-section patch around $1,500–$3,000. Those are market ranges rather than Voyager’s price list. Whether the fault is ingress or obstruction, and how deep the gully-side run sits. Trench depth climbs quickly down the fall.
Per metre, no — excavation is cheaper per metre. Overall it usually is. Excavating ground that is periodically saturated is slower, needs more support and backfills less predictably, and all of that is priced. On some properties the reinstatement is not possible at any price, which settles it entirely.
A correctly installed liner carries a 50-year design life. It outlasts what it replaced because it has no joints along its length — and joints are where roots get in, where ground movement opens a gap, and where old earthenware fails first. And because it is continuous, it keeps ground and storm water out along the whole run rather than at the point that failed.
A typical residential run is a single day on site, and the resin cures in hours rather than days. The camera survey happens first, either on the same visit or beforehand — nothing about a relining job should be quoted from the surface.
Most can, but not all — and we will say so rather than sell you something that will not work. A pipe that has collapsed completely, or lost so much of its shape that there is nothing left to line against, needs replacing. In Cammeray the host pipe is usually a good candidate: open or offset joints in 1920s earthenware taking storm and ground water, often along a run rather than at one point. Gully movement spreads the damage.
Yes, and in Cammeray that is frequently the real job. Gully ground either side of Flat Rock Creek moves enough to open joints in interwar pipe, and an open joint takes water in as readily as it lets waste out. A liner is continuous, so it seals the run along its whole length. Clearing the drain does nothing for a pipe that is not blocked.
Through that section, yes. Roots enter at joints and cracks; a liner is continuous and seals them, so the entry point is gone. Roots can still find a different fault further along an old line, which is why the survey covers the whole run rather than only the section that failed.
Camera survey first, a fixed price agreed before the work starts, and no excavation.
Voyager Plumbing · NSW Contractor Licence 476657C
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Page reviewed and updated 20 August 2026
