Globally, municipalities and engineers face the same challenge: how to keep critical water and wastewater infrastructure reliable as it ages. Traditional dig-and-replace methods are disruptive, costly, and often impractical in dense urban settings. Our engineers at Insituform pioneered CIPP lining to change this approach, providing a trenchless solution that restores pipelines efficiently and with minimal disruption.
In 1971, Insituform invented CIPP technology, and since then it has become the industry’s benchmark for extending pipeline life without excavation. Today, our systems remain the most widely applied trenchless rehabilitation method, designed to add decades of service to pipelines while minimising disruption to the communities they serve.
What Is CIPP Lining?
CIPP is a trenchless rehabilitation technique where a resin-saturated liner is installed inside an existing pipe. Once cured, the liner hardens into a new pipe that restores structural strength and is capable of carrying both internal pressure and external loads.
At Insituform, we manufacture a full range of CIPP technology, including:
- Insituform Felt Liners – versatile solutions for a wide range of diameters and conditions.
- InsituMain – developed for pressure pipelines, particularly potable water mains.
- iFlex Lateral Liners – designed to reline lateral and branch connections.
- iPlus® Glass UV – high-strength systems for demanding applications.
Each liner undergoes up to 28 separate quality control checks during manufacturing, ensuring every installation achieves the design strength and service life expected by engineers.
How CIPP Extends Pipeline Longevity
Since Insituform pioneered CIPP in 1971, our very first installation has continued to perform reliably for more than 50 years. This long-term record demonstrates that when designed, manufactured, and installed correctly, CIPP technology delivers service lives well beyond half a century.
The durability of CIPP comes from several engineered characteristics:
- Structural reinforcement – the liner is designed to act as a fully structural pipe, capable of carrying soil loads, live loads, and hydrostatic pressure even where the host pipe has deteriorated.
- Chemical and corrosion resistance – Insituform resins withstand aggressive sewer conditions and protect potable water mains against corrosion.
- Hydraulic efficiency – the smooth, jointless inner wall improves flow and reduces turbulence, often enhancing hydraulic capacity compared with older host pipes.
- Leak prevention – seamless rehabilitation eliminates infiltration and exfiltration, helping safeguard water quality and preventing environmental contamination.
Our engineers design every liner to international standards, such as ASTM F1216, calculating thickness, modulus of elasticity, and flexural strength to ensure predictable long-term performance.
Environmental and Cost Advantages
CIPP is not just a structural solution. It also reduces the environmental and social impacts of pipeline rehabilitation. Because it avoids open-cut excavation, it:
- Minimises disruption to traffic and businesses.
- Generates far less spoil for disposal.
- Lowers carbon emissions by reducing the use of heavy machinery and transport.
From a financial standpoint, CIPP offers both direct and indirect savings. Installations are faster than traditional methods, labour costs are reduced, and communities avoid the wider costs of prolonged disruption. For municipalities under pressure to do more with less, Insituform CIPP provides one of the most cost-effective rehabilitation methods available.
Case Studies: Extending Pipeline Lifespan with CIPP
Our project record demonstrates how Insituform’s CIPP extends the life of critical infrastructure in very different conditions:
- Amsterdam, The Netherlands – A 600 mm cast iron drinking water main collapsed beneath a canal in the city centre. Traditional replacement would have caused months of disruption and risked damaging historic buildings. Our team used InsituMain® technology with a styrene-free resin approved for potable water. The 50-metre section was relined in just two days, and the pipe returned to service within five working days. The result was a safe, corrosion-resistant water main that restored supply without prolonged disruption.
- Memphis, Tennessee – The Mud Island Interceptor, a 60-inch reinforced concrete sewer built in 1977, showed advanced deterioration. We rehabilitated 2,400 feet of the interceptor using polyester CIPP, installed in three sections. A complex bypass pumping system maintained flows of up to 47.5 million gallons per day during installation. Despite the scale, the project finished on schedule and without safety incidents, extending the interceptor’s life by decades while saving the city an estimated $100,000 in avoided upstream construction costs.
Insituform delivers lasting performance across both pressurised water mains and major sewer networks.
Why Insituform Is the Industry Leader
With more than 50 years of innovation, we have installed millions of metres of CIPP liners worldwide. Our leadership rests on:
- Proven technology for both pressure and gravity applications.
- Rigorous quality assurance, backed by ISO 9001 certification.
- Global reach combined with local delivery.
- Training and support that ensure consistent standards for engineers and contractors.
Extending Infrastructure Life with CIPP
CIPP lining is more than just a repair. It is a structural renewal method that adds decades of reliable service to ageing pipelines. From urban drinking water networks to large-scale sewer interceptors, Insituform continues to prove that CIPP provides dependable results under the most demanding conditions.
For engineers, contractors, and municipalities, our solutions deliver the right balance of technical performance, cost efficiency, and minimal disruption.
Contact our experts today to discuss how Insituform CIPP can extend the lifespan of your pipeline infrastructure.
