• Under commission by the Learned Skills Council and the European Social Fund Jago wrote the training material used within the GRP industry.
  • Jago, now NET GRP set the standards for NVQ used throughout the Glass Reinforced Plastics industry.
  • Lloyds approved applications.
  • Design specification and products comply with both British and European Standards and regulations.
  • Tested to ensure 2G, 3G, 4G & 5G propagation is unrestricted.


NET GRP uses in-house design teams, with extensive expertise in the telecommunications sector. With over 20 years of collaboration with industry leaders like Cornerstone, Vodafone, VMO2, MBNL and other Infrastructure providers, our team specialises in designing rooftop and church installations, often with concealment requirements.

This mobile telecoms experience, coupled with Jago’s 50 years of experience in the GRP industry, equips NET GRP to understand the challenges and limitations associated with GRP RF concealments. This collective knowledge enables us to develop bespoke solutions tailored to meet the demands of the telecoms industry.


NET GRP uses materials that comply with Lloyd’s Register’s classification rules and guidelines when designing and constructing GRP structures/ concealments

Compliance with these rules helps ensure that structures meet recognised standards for safety, structural integrity, and longevity.

Whilst Lloyd’s of London is not directly involved in setting standards for GRP materials, Lloyd’s Register, a distinct entity, plays a significant role in establishing standards and regulations related to the use of materials like GRP.

RF Transparency

In 2020 NET CS commissioned a report to be carried out by an independent consultant, Siroda.

The basis of the test was to establish the propagation and losses associated with GRP louvers installation on church sites, but the data can be interpreted and applied to GRP concealments too.

If you would like more information or a copy of the report, please get in contact.