Sentric unites Castell, Kirk, Salvo, STI & Zonegreen

Serv Trayvou Interlocking awarded EcoVadis Silver, continuing Sentric’s sustainability progress

EcoVadis Silver Sustainability Rating badge, Top 15%, awarded August 2026

Serv Trayvou Interlocking is proud to announce that it has been awarded an EcoVadis Silver Medal, placing STI among the top 15% of companies assessed by EcoVadis in its latest sustainability assessment.

Following Castell Safety’s recent EcoVadis Gold rating, STI’s Silver award marks another important milestone in Sentric Safety Group’s sustainability journey and reinforces the progress being made across the Group.

What this means for our customers
For customers and partners, this recognition provides independent, third-party recognition of STI’s progress in strengthening responsible business practices across quality management, workplace safety, responsible purchasing, supply chain management and environmental performance. 

Building sustainability into everyday operations
The assessment highlights practical progress already in place, including STI’s ISO 9001-certified quality management system, documented policies and KPI tracking, employee safety actions, supplier sustainability assessments, supply chain optimisation, more local sourcing where appropriate, energy monitoring, green energy purchasing, waste reduction, recycling and Sentric-level environmental reporting.

Supporting Sentric’s wider sustainability goals
Together with Castell Safety’s Gold achievement, STI’s Silver rating shows that sustainability is becoming a shared strength across Sentric, supported by focused action, team commitment and measurable progress.

It also helps support supplier assessments by providing recognised evidence of STI’s sustainability progress and responsible business approach, giving customers added confidence when working with us as a long-term partner.

Green sprout surrounded by icons for solar, wind, sustainable fuel and recycling, representing sustainability

Part of Halma’s safer, cleaner, healthier future
As part of Sentric Safety Group and Halma, STI contributes to a wider purpose: growing a safer, cleaner, healthier future for everyone, every day. STI’s Silver rating reflects recognised progress in responsible business practices, ethical operations and supply-chain engagement across our operating companies.

Looking ahead, STI will continue to build on this progress through practical actions, continuous improvement and a shared commitment to more responsible industrial operations, supported by measurable improvement actions.