What Is Pipe Relining?
Pipe relining (also known as CIPP—Cured-in-Place Pipe lining) is a modern, no-dig solution for repairing damaged pipes. Instead of excavating and replacing pipes, we create a new pipe within the existing one.
This technology has revolutionised plumbing repairs, especially for properties with established landscaping, driveways, or structural foundations.
How Pipe Relining Works
Step 1: Inspection
We use advanced camera technology to inspect your pipes and identify:
- The location and extent of damage
- Pipe diameter and material
- Any obstructions or root intrusions
Step 2: Cleaning
Before relining, the pipe is thoroughly cleaned using:
- High-pressure water jetting
- Root cutting equipment (if necessary)
- Mechanical de-scaling tools
Step 3: Preparation
A felt liner saturated with epoxy resin is prepared according to the pipe’s specifications.
Step 4: Installation
The liner is inserted into the pipe and inflated using air or water pressure, moulding it to the existing pipe’s shape.
Step 5: Curing
The resin is cured (hardened) using hot water, steam, or UV light. This typically takes 1-4 hours.
Step 6: Final Inspection
A final camera inspection ensures the relining is successful and the pipe is fully functional.
Benefits of Pipe Relining
1. No Excavation Required
Traditional pipe replacement requires digging trenches, which means:
- Destroyed landscaping
- Damaged driveways
- Disrupted paving
- Potential structural damage
With relining, we access your pipes through existing cleanouts or create a single small access point.
2. Cost-Effective
While the per-metre cost of relining is higher than traditional replacement, the total cost is often lower because:
- No excavation equipment rental
- No landscaping restoration costs
- Faster completion means less labour
- Minimal disruption to your property
3. Faster Completion
Most relining jobs are completed in one day, compared to several days or even weeks for traditional replacement.
4. Longer Lifespan
Relined pipes typically last 50+ years, compared to 20-50 years for new PVC pipes.
5. Improved Flow
The new pipe is smoother than older clay or concrete pipes, improving water flow and reducing future clog risks.
Common Problems Fixed by Relining
Cracked or Collapsed Pipes
Age, ground movement, and heavy traffic can crack or collapse pipes. Relining restores structural integrity.
Root Intrusion
Tree roots seeking water are a common problem along the South Coast. Relining seals existing pipe joints, preventing future root intrusion.
Corrosion
Old galvanized steel pipes corrode over time. Relining creates a corrosion-resistant barrier.
Leaking Joints
Traditional pipe sections are joined at multiple points—all potential failure points. Relining creates a seamless pipe.
When Relining Isn’t the Solution
While relining is excellent for many situations, traditional replacement might be better when:
- The pipe has collapsed completely (relining requires some pipe structure)
- The pipe has bellied (sagging due to ground conditions)
- Multiple sharp bends make liner installation impossible
- The pipe is too deteriorated to clean properly
The Derwent Plumbing Difference
At Derwent Plumbing, we offer:
State-of-the-Art Equipment
We use the latest relining technology and camera inspection equipment available in South Africa.
Local Expertise
We understand the unique plumbing challenges of the KZN South Coast:
- Sandy soil conditions in coastal areas
- Common tree species that cause root problems
- Age and types of pipes in local homes
Guaranteed Workmanship
We stand behind our work with:
- Comprehensive warranties on all relining work
- After-service camera inspections
- Ongoing support and advice
Transparent Pricing
We provide:
- Free camera inspections and quotes
- Clear pricing with no hidden costs
- Options comparison (relining vs. replacement)
Cost Considerations
While we can’t provide exact pricing without inspection, here are typical factors:
Factors Affecting Cost
- Pipe diameter: Larger pipes cost more to reline
- Length of damage: More extensive damage requires longer liners
- Access difficulty: Hard-to-reach pipes may cost more
- Pipe condition: Heavily damaged pipes require more preparation
Typical Cost Range
For residential properties, pipe relining typically costs between R2,500 and R4,500 per metre, compared to R3,000 to R6,000 per metre for traditional replacement (including restoration).
Is Pipe Relining Right for You?
If you’re experiencing:
- Recurring blockages
- Slow drains
- Foul odours from drains
- Lush patches of grass in your yard (septic leak signs)
- Rising water bills
Contact Derwent Plumbing for a free camera inspection. We’ll provide honest advice on whether relining is the best solution for your specific situation.
Servicing the entire KZN South Coast
Call us:
- Steve: 082 893 1742
- Goan: 076 198 3858
Email: info@derwentplumbing.co.za