Quinshield Achieves SR4 and SR5 Certification for Security-Rated GRP Buildings

19th June 2026

Quinshield Achieves SR4 and SR5 Certification

Quinshield has expanded its LPCB security-rated building capability with certification for SR4 and SR5 GRP buildings.

This development strengthens our ability to support utility, infrastructure and critical national infrastructure projects where higher levels of physical security, durability and operational reliability are required.

With capability across SR1 to SR5, Quinshield can now manufacture a wider range of security-rated GRP buildings and enclosures to suit different project risks, site requirements and asset protection needs.

Supporting critical infrastructure projects

The addition of SR4 and SR5 capability allows Quinshield to support projects where enhanced resistance, secure access and long-term performance are essential.

Our GRP buildings can be designed around project-specific layouts, equipment requirements, access arrangements and site constraints, while still supporting the short lead times that give Quinshield a strong advantage over traditional construction methods.

Key capabilities include:

  • LPCB-rated GRP buildings from SR1 to SR5
  • Bespoke layouts and multi-compartment configurations
  • Fast-track manufacturing from our South Wales facility
  • Durable, low-maintenance GRP construction
  • Low-carbon GRP variants available for selected applications

“Achieving SR4 and SR5 certification is an important step for Quinshield. It allows us to support more demanding infrastructure projects while maintaining the speed, flexibility and manufacturing control our customers expect.”

Quinshield Ltd

Need a security-rated GRP building?

From SR1 to SR5, Quinshield manufactures security-rated GRP buildings and enclosures for utility, infrastructure and industrial applications.

Speak to our team about your project requirements, security rating, layout and delivery programme.