GRP Composite Structure

Glass Reinforced Polymer · Composite Technology

ENGINEERED
FROM WITHIN

Every SOLIDO cover is a precision-engineered composite system. Five bonded layers working as one — absorbing load, resisting corrosion, enduring decades of urban stress.

Discover
0%
Weight Reduction
vs cast iron
0MPa
Tensile Strength
minimum
0yrs
Service Life
minimum expected
0t
Load Class
F900 certified

Material Science

What Is GRP?

GRP Composite Material cross-section

GRP Cross-Section

Glass Fibre + Resin Matrix

Glass Reinforced Polymer

PRV · Fibre de verre + Résine polyester

GRP — also known as fibreglass or PRV (plastique renforcé de verre) — is a composite material formed by embedding glass fibres within a polymer resin matrix. The result is a material that combines the tensile strength of glass with the chemical resistance and mouldability of polymer.

Unlike steel or cast iron, GRP does not corrode, rust or degrade when exposed to moisture, acids, salts or urban chemicals. It is electrically non-conductive, RF-transparent, and has no scrap metal value — making it inherently theft-resistant.

⚗️

Chemical Resistance

Acids, salts, sewage

Non-Conductive

Safe for electrical zones

🔁

RF Transparent

Smart city compatible

🌡️

Thermal Stable

-40°C to +120°C

Composite Architecture

5-Layer Construction

Cutaway showing GRP layers

Layer 01

Anti-Slip Surface

Micro-textured outer surface provides grip for pedestrians and vehicles in all weather conditions.

Click to explore each layer

The Advantage

GRP vs Cast Iron

Property
SOLIDO GRP
Cast Iron
Corrosion Resistance
Theft Deterrent
Electrically Safe
UV Stable
Lightweight
Noise on Impact
Maintenance-Free
RF Transparent

Ready to specify?

Built for the infrastructure of tomorrow.

Explore our full product range or speak with our engineering team about custom specifications.