Not Every Pipe Problem Needs a Full-Length Reline
Full-length sewer relining is the right solution when CCTV inspection shows multiple defects spread across the pipe run — root intrusion at several joint locations, cracking in multiple sections, widespread joint deterioration. In that scenario, relining the full pipe is more cost-effective than treating each defect individually.
But when CCTV reveals that the problem is localised — a single cracked joint, one root entry point, a failing junction, or a specific section that has been damaged — a point repair is often the better answer.
Point repair uses the same epoxy resin CIPP technology as full-length relining, applied to a specific short section of the pipe rather than the entire run. The patch is structurally identical to a full liner — same material, same cure process, same 50-year warranty on the liner component — but it addresses only the section that needs attention.
What Is a Point Repair?
A point repair (also called pipe patching or spot repair) involves:
- CCTV inspection to identify and locate the specific defect
- Jetting to clean the defect area
- Patch liner preparation — a short section of felt liner (typically 300mm–1000mm long) pre-saturated with epoxy resin
- Patch installation — the patch is pulled into the pipe on a calibration tube and positioned precisely over the defect
- Cure — UV or steam cure hardens the patch in place
- Robotic trimming if the patch covers a junction
- Post-cure CCTV to confirm the patch is correctly placed and cured
The result is a cured epoxy patch that seals the defect, prevents root re-entry, and restores the pipe’s structural integrity at the affected point.
Junction Repair
Junction repair is a specific type of point repair focusing on the junction (Y-junction or T-junction) where a branch line joins the main sewer pipe. Junctions are often the most vulnerable point in a sewer system because:
- They are a structural complexity where two pipe sections meet
- The junction is a common root entry point (the junction area often has multiple small gaps)
- Installation quality at junctions in older systems was variable
A junction repair involves lining the junction area — typically 600mm to 1200mm of pipe encompassing the branch connection — and using a robotic cutter to reopen the branch line within the liner. This is a specialist operation requiring robotic reinstatement equipment.
Junction repair cost: $2,500–$4,000 depending on access and junction size.
When Point Repair Is the Right Choice
| Scenario | Recommendation |
|---|---|
| Single cracked joint, rest of pipe in good condition | Point repair |
| One root entry point, no other defects | Point repair |
| Junction failure, branch connection, good main line | Junction repair |
| Multiple defects spread along the pipe run | Full-length relining |
| Defects at 3+ locations on a 12m pipe | Full-length relining (more cost-effective) |
| Post-purchase: one defect on otherwise good pipe | Point repair |
| Pre-sale: quick fix on a specific known issue | Point repair |
The key determining factor is how many defects there are and how spread out they are. When defects are clustered or widespread, relining the full length is almost always more economical than treating each one individually. When there’s a single localised issue, a point repair at $1,800–$3,500 is far better value than a full reline at $6,000+.
Point Repair Costs on the Central Coast
| Job Type | Cost |
|---|---|
| Single point repair (300–600mm patch) | $1,800–$2,800 |
| Extended point repair (600mm–1m patch) | $2,500–$3,500 |
| Junction repair (robotic reinstatement) | $2,500–$4,000 |
| Multiple point repairs (2–3 on same pipe) | $4,000–$7,000 (compare vs full reline) |
| CCTV inspection (credited if repair proceeds) | $250–$450 |
When multiple point repairs cost more than a full reline: If you have three or more point repairs on a 12m pipe, the combined cost ($5,000–$9,000) often approaches or exceeds the cost of a full-length reline ($6,500–$8,500). In this scenario, we’ll recommend the full reline — it addresses all current defects and future ones that haven’t progressed yet, and provides a single 50-year warranty for the whole pipe.
Point Repair FAQs
Q: Can you do a point repair without digging? Yes — this is the key advantage. The patch liner is inserted through the existing pipe bore via the same access points used for full relining (boundary cleanout, floor waste, inspection opening). No excavation is required.
Q: Will a point repair last as long as a full reline? The patch material carries the same 50-year product warranty as a full liner. The point repair is structurally equivalent to the full liner at the patched section. The rest of the unlined pipe continues to age normally — this is why CCTV inspection is important in assessing whether point repair or full relining is the better long-term answer.
Q: I’ve been quoted for full relining but only have one defect. Should I push back? Yes, ask for clarification. If CCTV shows a single isolated defect and the rest of the pipe is in good condition, a point repair may be the appropriate recommendation. If the CCTV shows widespread deterioration throughout the pipe, full relining is genuine. Ask to see the CCTV footage and have the defect locations explained.
Q: Can a point repair be done on a PVC pipe as well as terracotta? Yes. Point repair works on any pipe material that can accept a CIPP liner — terracotta, PVC, cast iron, concrete. Full guide to relinable materials →
Q: How quickly can a point repair be done once the defect is identified? For a straightforward single point repair with CCTV on the same day, the job is complete in 3–5 hours. We can often carry out point repair on the same visit as the inspection if the defect is clearly suitable for patching and we have the appropriate patch size on the vehicle.