Trelleborg Proliner Achieves WRc Approval for Infiltration Resistance

At C J Kelly International Ltd, we’re proud to share that Trelleborg’s Proliner, used with HC120+ thermocuring resin, has successfully passed the WRc Group CP655 test (Class 1).

This approval is a significant milestone. WRc certification is globally recognised and confirms that Proliner provides proven protection against water infiltration. For the UK market, this validation underlines what we already know: Proliner is a reliable, fit-for-purpose system designed to meet the toughest challenges in trenchless rehabilitation.

Why does this matter? Infiltration is more than a nuisance - it drives up wastewater treatment costs, increases energy use, and reduces valuable clean groundwater reserves. The WRc test demonstrates that Proliner not only prevents infiltration but also supports long-term environmental protection by keeping wastewater where it belongs and preventing exfiltration into the ground.

With WRc approval now in place, Trelleborg continues to set the benchmark for quality, reliability, and sustainability in relining technology. As Trelleborg’s UK distributor, we at C J Kelly International Ltd are committed to supporting contractors with approved solutions that deliver real performance in the field.