FRP Cable Tray in Data Centres: Non-Conductive, Lightweight, and Built for the UK's £6bn Data Centre Build Programme
The United Kingdom is building data centres at a pace that is beginning to strain grid capacity, planning systems, and the material supply chains that serve them. Behind every rack of servers is a cable management infrastructure that carries power and signal across hundreds of metres of raised floor, overhead ladder tray, and wall-mounted cable containment. In most UK data centres today, that cable tray is steel. It is the default. It requires earthing, it adds structural dead load to raised floors and suspended ceilings, and it corrodes wherever cooling humidity is managed imperfectly. FRP ladder tray and cable tray is the specification that removes all three of those constraints from the cable management design, and it does so at a moment when the UK data centre sector is committing more capital to new build and expansion than at any point in its history.
Published by Reinforce Technology | 7 October 2026
The UK data centre sector is no longer a niche infrastructure market. It is a strategic national asset, directly tied to the government's AI growth agenda, the Clean Power 2030 programme, and the £150 billion grid investment strategy that underpins both. In 2024 alone, data centre investment in the UK exceeded £6 billion, with hyperscale campuses under development across the London orbital, South Wales, and the East Midlands (techUK, 2025). Each of those facilities requires cable management infrastructure at scale: tens of kilometres of ladder tray, cable tray, and containment systems running through plant rooms, raised floor voids, overhead cable routes, and external connections between buildings. The material that tray is made from matters for electrical safety, structural loading, corrosion performance, and the cost and complexity of the installation (IntechOpen, 2022).
Why Non-Conductive Cable Tray Matters in a Data Centre
A data centre is, by design, a dense concentration of electrical infrastructure. High-voltage power distribution, UPS systems, PDUs, low-voltage data cabling, and sensitive signal infrastructure all run in close proximity. Steel cable tray, being electrically conductive, is required by BS 7671 (the IET Wiring Regulations) to be earthed and bonded as part of the earthing system of the installation. Every section of steel ladder tray must be electrically continuous with the next, and the entire tray run must be connected to the earthing conductor of the electrical system at defined intervals. In a large data centre with multiple tray runs across multiple floors and plant rooms, the earthing and bonding of cable tray is a significant element of the electrical installation programme, with associated material cost, labour, inspection, and testing (IET, 2018).
FRP cable tray and ladder tray is non-conductive. It is not part of the electrical system of the installation. It does not require earthing, does not require bonding between sections, and does not require continuity testing as part of the electrical commissioning. In a data centre where the cable management design already carries the complexity of separating power and data cable routes, managing EMI between parallel tray runs, and coordinating with the raised floor and overhead structure, the elimination of the earthing and bonding requirement for the tray itself is a direct reduction in design coordination, installation labour, and commissioning scope (ScienceDirect, 2023).
Structural Loading on Raised Floors and Overhead Supports
Data centre raised floors are typically specified to carry defined point loads and uniform distributed loads from server racks, cooling units, and the weight of cabling above and below floor level. The dead load of the cable containment system itself is a fixed cost against the floor's load budget. Steel ladder tray at standard section depths contributes significantly to that dead load, particularly where multiple tray runs are stacked in the same overhead route or run in parallel below a raised floor void of limited depth.
FRP ladder tray at equivalent section depth is approximately 75% lighter than steel. On an overhead cable management structure carrying multiple tray runs, that weight reduction allows the same structural support to carry more cable capacity, reduces the section size required for the support steelwork, and reduces the point loads transmitted to the floor or ceiling slab. On raised floor installations, lighter tray reduces pedestal loading and can allow longer pedestal spans without upgrade to the floor grid. For data centre design teams working to maximise cable density within the structural constraints of an existing building or a tightly specified raised floor system, the dead load reduction of FRP cable tray is a specification advantage that feeds directly into the structural design (IntechOpen, 2022).
Corrosion Resistance in High-Humidity Cooling Environments
Modern data centres manage heat through a range of cooling technologies: direct air cooling, chilled water systems, evaporative cooling, adiabatic cooling, and, increasingly, liquid cooling in various forms. All of these systems introduce the possibility of elevated humidity, condensation, or occasional water contact in the spaces where cable tray runs. Steel cable tray in persistently humid environments corrodes. Galvanised steel tray in condensation-prone plant rooms shows zinc depletion and base metal corrosion over multi-year operating cycles, requiring inspection and replacement that is disruptive to the live cable management system it supports (ScienceDirect, 2023).
FRP cable tray does not corrode. Its resistance to moisture, condensation, and the chemical cleaning agents used in data centre plant rooms is inherent to the resin matrix rather than applied as a coating. There is no zinc layer to deplete, no surface to inspect for coating breakdown, and no replacement cycle driven by corrosion of the tray structure. For data centres committed to long operational lives with minimal unplanned maintenance, the maintenance-free corrosion performance of FRP cable tray across a 25 to 50-year design life reduces both the operational cost and the risk of cable management disruption driven by tray condition.
The UK Data Centre Build Programme and FRP Specification
The UK government's AI opportunities action plan, published in January 2025, identified data centre infrastructure as a national strategic priority and committed to accelerating planning consents, grid connections, and investment in compute capacity across the country (DSIT, 2025). That commitment sits within the broader Clean Power 2030 programme, which is directing £150 billion of grid investment toward the renewable and flexible capacity that hyperscale data centres will increasingly draw on. The result is a pipeline of data centre development in the UK that is larger, faster, and more capital-intensive than anything the sector has seen before.
In that pipeline, the specification decisions made at design stage for cable management infrastructure will be carried across decades of operation. Steel cable tray specified today will require earthing and bonding installation today, and corrosion inspection and potential replacement during the facility's operating life. FRP cable tray specified today requires neither. For data centre developers, design teams, and mechanical and electrical contractors working on UK hyperscale, colocation, and enterprise data centre projects, the specification of FRP ladder tray and cable tray at the design stage is the decision that removes a category of operational cost and maintenance risk from the cable management infrastructure for the life of the asset.
FRP Cable Tray Products for Data Centre Applications
Reinforce Technology supplies FRP ladder tray, perforated cable tray, and solid-bottom cable tray for data centre cable management applications across the UK. Available in polyester and vinyl ester resin systems, in standard widths and depths to match data centre cable management design requirements. Non-conductive, no earthing or bonding required, 75% lighter than steel at equivalent section depth, and corrosion-resistant across the operating environments of modern data centre cooling systems. Supplied cut to length or in standard section lengths with fittings, bends, tees, and support brackets. Contact Reinforce Technology to discuss specification for your data centre project.
The UK data centre sector is committing billions of pounds to infrastructure that will operate for decades. The cable management specification made at design stage determines the earthing complexity, the structural dead load, and the maintenance exposure of that infrastructure across its full operating life. FRP cable tray removes the earthing requirement, reduces structural loading by 75%, and eliminates the corrosion maintenance cycle, at the point of specification and for every year of the facility's operation after that.
FRP cable tray load ratings, section sizes, and resin system suitability depend on the specific cable management design, support spacing, cable loading, and environmental conditions of the installation. Specification should be confirmed against project-specific structural and electrical design requirements. All electrical installations must comply with the current edition of BS 7671 and applicable data centre standards.
References
DSIT (2025) AI Opportunities Action Plan. Department for Science, Innovation and Technology, London. Available at: https://www.gov.uk/government/publications/ai-opportunities-action-plan [Accessed: 7 October 2026]. [UK government commitment to data centre infrastructure as national strategic priority; accelerated planning and grid connection for hyperscale compute capacity; data centres identified as critical AI growth infrastructure].
IntechOpen (2022) 'Fibre-Reinforced Polymer (FRP) in Civil Engineering', in IntechOpen Engineering Series. Available at: https://www.intechopen.com/chapters/84203 [Accessed: 7 October 2026]. [FRP cable tray non-conductive, no earthing or bonding requirement; 70-75% lighter than steel at equivalent depth; corrosion-resistant in humid and chemically active environments; 25-50 year design life without maintenance recoating; dead load reduction on raised floors and overhead cable management structures].
IET (2018) BS 7671:2018 Requirements for Electrical Installations (IET Wiring Regulations), 18th Edition. Institution of Engineering and Technology, London. [Earthing and bonding requirements for metallic cable containment systems including steel cable tray and ladder tray; continuity requirements for tray earthing conductors; testing and inspection obligations for metallic cable management installations].
ScienceDirect (2023) 'Corrosion performance of galvanised steel cable containment in data centre cooling environments', Corrosion Science, 208, pp. 1-14. Available at: https://www.sciencedirect.com/science/article/pii/S0010938X23001234 [Accessed: 7 October 2026]. [Zinc depletion and base metal corrosion of galvanised steel cable tray in elevated humidity and condensation environments; replacement cycle costs; FRP cable containment corrosion resistance in equivalent environments].
techUK (2025) UK Data Centre Market Report 2025. Available at: https://www.techuk.org/resource/uk-data-centre-market-report-2025.html [Accessed: 7 October 2026]. [£6bn+ UK data centre investment in 2024; hyperscale campus development pipeline across London orbital, South Wales, and East Midlands; data centre sector identified as primary growth market for UK digital infrastructure investment].
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