No-dig pipe repair on the Lower North Shore.
Cracked or root-damaged pipe repaired in place in Wahroonga — no excavation, so heritage fabric, stonework and listed streetscapes stay exactly as they are.
No callout fee on eligible jobs · Free quotes
Wahroonga is the highest of the Upper North Shore suburbs at around 202 metres across 8.09 square kilometres, with thirteen heritage-listed sites and housing spanning roughly a hundred years. Excavation is restricted on the listed properties and expensive to make good on the rest, where gardens are large and long established. It also spans two councils, so anything entering the road reserve depends on the address.
Roots under long-established planting in pipe whose age varies enormously between neighbours. A century of housing means the survey regularly finds something quite different next door.
Because what sits above the pipe cannot be replaced. This is the part of a drainage repair people do not price until an excavator is already on site.
Heritage-listed fabric on thirteen sites, and very large established gardens across the rest. Little of it is quick or cheap to reinstate.
A liner goes in through an opening that already exists. Nothing above the pipe has to move.
The highest Upper North Shore suburb at 202 metres across 8.09 square kilometres, spanning Ku-ring-gai and Hornsby Shire.
Wahroonga sits in the Ku-ring-gai Council and Hornsby Shire, postcode 2076.
Local figures sourced from: Ku-ring-gai Urban Forest Strategy — Ku-ring-gai Council · ABS 2021 Census QuickStats — Wahroonga · Wahroonga, New South Wales — Wikipedia
Federation through interwar and beyond — a century of housing means neighbours are frequently decades apart in drainage age, so the survey decides rather than the street.
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.
Excavation restricted; nothing visible changes.
Reinstatement dwarfs the repair.
Road-reserve approvals depend on the address.
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 Wahroonga 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.
On heritage fabric a repair that never has to be revisited is worth disproportionately more — a second excavation would need the same approvals as the first.
Roots come back through joints. A liner has none.
Voyager covers the whole Lower North Shore. These are the closest to Wahroonga:
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. It means listed fabric and very large established gardens are untouched, and no council approval is needed for work within the property.
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. Heritage restriction on thirteen listed sites, garden reinstatement on the rest, and which of two councils the property sits in for anything entering the road reserve.
Per metre, no — excavation is cheaper per metre. Overall it usually is. On a heritage property the comparison often does not arise at all — where excavation is restricted there is no cheaper alternative to price against. 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. It also bridges offset joints permanently, which matters where the ground will keep moving and the surface above cannot be disturbed again.
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 Wahroonga the host pipe is usually a good candidate: roots under long-established planting in pipe whose age varies enormously between neighbours. A century of housing means the survey regularly finds something quite different next door.
Both Ku-ring-gai and Hornsby Shire — the suburb spans the boundary. For relining within private property through an existing access point it rarely matters. For excavation entering the road reserve it decides who you apply to, which is one more reason the no-dig route is simpler here.
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
Verify with NSW Fair Trading
Page reviewed and updated 20 August 2026
