The BRAWOLINER® cured-in-place pipe (CIPP) lining system has successfully passed the CP655 Infiltration Test at the Water Research Centre (WRc) in Swindon, further confirming its performance as a reliable solution for drain lining, sewer rehabilitation and trenchless pipe repair in the UK.
The independent testing verified that the BRAWOLINER® system meets the stringent infiltration requirements of CP655 Class 1, demonstrating its ability to provide a watertight seal within existing drainage and sewer pipes.
For contractors working in CIPP drain lining and trenchless pipe rehabilitation, the results highlight the liner’s ability to maintain water resistance even under demanding installation and groundwater conditions.
BRAWOLINER® systems are also supported by a broad range of internationally recognised approvals and certifications, including ASTM standards, DIBt approvals and WRc product approval, helping ensure the system meets demanding regulatory and technical requirements across multiple global markets. This extensive approval portfolio positions BRAWOLINER® among the most widely certified CIPP liner systems available internationally.
Proven Resistance to Groundwater Pressure
As part of the test procedure, the installed liner was subjected to simulated groundwater pressure equivalent to a 5-metre water column (0.5 bar) for 30 minutes. Throughout the test duration, no infiltration was detected, confirming that water could not penetrate either, between the host pipe and the outer surface of the liner, or through the liner–resin matrix itself.
This level of performance highlights the system’s ability to provide a reliable seal against external groundwater pressure once fully cured, an essential requirement in modern sewer and drain rehabilitation projects.
The WRC testing provides confidence to asset owners and installers that when encountering difficult conditions in drain repair and sewer lining projects, they can be reassured that despite the presence of water in the pipeline, the BRAWOLINER® was successfully installed and cured without any impact on its final watertight performance.
Supporting Reliable Sewer and Drain Rehabilitation
One of the main goals of trenchless drain repair and sewer lining is to ensure that pipeline systems are restored so that:
Preventing infiltration and exfiltration is essential for maintaining the performance of drainage infrastructure and reducing unnecessary loading on wastewater treatment systems.
The successful CP655 test demonstrates that BRAWOLINER® can achieve these objectives while supporting efficient installation for CIPP lining contractors working in domestic, commercial and municipal drainage systems.
Industry Confidence in CIPP Lining Performance
Commenting on the successful test, Robert Croxton, Key Account Manager from S1E Ltd, a UK supplier of trenchless rehabilitation technologies and BRAWOLINER® systems, said:
“Independent testing such as the CP655 infiltration test is extremely important for the UK drainage industry. It gives contractors and asset owners confidence that a CIPP liner will perform as expected in real site conditions. The performance of BRAWOLINER® in this test confirms that installers can achieve a watertight drain lining, helping deliver efficient and reliable trenchless pipe rehabilitation.”
S1E Ltd supplies BRAWOLINER® liner systems and supports contractors across the UK with materials, technical advice and solutions for trenchless drain repair and sewer rehabilitation.
