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Semtex Relining Solutions – The Future of Pipeline Rehabilitation

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Semtex Relining Solutions

At Semtex Trenchless Solutions, we specialise in advanced trenchless pipe rehabilitation, offering UV-Cured-In-Place Pipe (UV-CIPP) and Spray-In-Place Pipe (SIPP) solutions. Our services ensure minimal disruption while extending the lifespan of critical pipeline infrastructure for residential, commercial, council infrastructure, municipal, and oil & gas clients.

Partnering with Industry Leaders

We work with the world's top UV GRP liner manufacturers and epoxy resin suppliers, ensuring the highest quality materials for all pipe rehabilitation projects. For potable water pressure applications our AS/NZS4020-approved resins and liners meet strict standards. We also partner with the world’s best brands and manufacturers, using cutting-edge curing technology and high-performance materials to provide custom solutions that meet the highest industry standards.

Cured-In-Place Pipe (CIPP) Relining

CIPP technology allows us to install a seamless, high-strength liner inside existing pipelines,restoring functionality and preventing leaks without the need for excavation. 

Curing Methods:

  • UV Curing: UV light is used to rapidly cure GRP liners, offering faster installation times, increased strength, and enhanced durability.
  • Steam Curing: Steam is introduced to cure the liner efficiently, providing a reliable and uniform hardening process.
  • Hot Water Curing: Hot water is circulated through the liner, accelerating the curing process for larger-diameter pipes.
  • Ambient Curing: Used for smaller diameter pipes and shorter lengths, this method relies on ambient temperatures to cure the liner without additional heat sources.

Features & Benefits:

✔ Fast Installation – Various curing methods ensure project efficiency.
✔ Extended Lifespan – 50+ year durability.
✔ Eco-Friendly – No excavation required.
✔ Versatile – Works for sewer, stormwater, and industrial pipelines.

Applicable for: Municipal networks, industrial wastewater, and culverts.

Spray-In-Place Pipe (SIPP) Relining

SIPP is a trenchless rehabilitation method that restores the internal surface of deteriorated pipes by spraying a high-performance epoxy or polyurea coating. It seals cracks, prevents corrosion, and extends the life of critical infrastructure — without the need for excavation.

Features & Benefits:

✓ Minimal Diameter Reduction – Thin yet durable coatings with excellent adhesion
✓ Safe for Potable Water – AS/NZS 4020-compliant epoxy systems
✓ Custom Build-Up – Multiple coats applied to meet project-specific DFT requirements (e.g. 2mm–5mm)
✓ Chemical & Corrosion Resistant – Ideal for wastewater, industrial, marine and oil and gas environments
✓ Flexible Application – Suitable for bends, expansion loops, and confined spaces
✓ Fast Cure Times – Quick return-to-service depending on coating type
✓ Pressure and non-pressure applications

Advanced Repair Techniques

Smart Lock Stainless Steel Sleeves

For localised pipe damage, we use Smart Lock sleeves, which instantly restore pipe integrity without curing time.

FFRP ASOE Pipe Liners

We offer FFRP ASOE pipe liners, an innovative solution for pressure and gravity pipe rehabilitation. These liners provide high-strength reinforcement while maintaining flexibility, ensuring a long-lasting solution for damaged infrastructure.

Epoxy Foam Infiltration Sealing

For groundwater infiltration, we apply high-strength epoxy foam, ensuring a watertight seal in areas where other methods may not be viable.

Design Life & Compliance

We provide customised solutions with design life options ranging from 25 to 100 years, meeting the most stringent international standards:

  • ASTM F1216-16 – CIPP rehabilitation for sewer and stormwater pipelines.
  • ASTM F1743 – Pulled-in-place installation of cured-in-place liners.
  • AS/NZS 2566 – Structural design for buried flexible pipelines.

Get in touch

  • Call us today  022 363 9400 or 022 194 5892
  • Email us: This email address is being protected from spambots. You need JavaScript enabled to view it.
  • Service Areas: Palmerston North, Hawkes Bay, and surrounding regions.
Choose Semtex Relining Solutions for innovative, long-lasting,
and trenchless pipe rehabilitation solutions!