FRP Laminated XPS Foam Composite Panels

FRP (GRP) sheet laminated XPS foam sandwich panel is one of the most popular thermal insulation composite panels. This composite panel has many advantages such as lightweight and high strength, thermal insulation, waterproof and moisture-proof, flame retardant, and long service life.


Before understanding this composite panel, let’s first understand what is FRP sheet and XPS foam.

FRP Sheet
  • FRP is the abbreviation of fiberglass-reinforced plastic, which is a composite material of fiberglass and resin.
XPS Foam
  • XPS, short for extruded polystyrene foam board, is a low-density insulation material.

Basic Specifications

  • FRP Material: thermosetting FRP (0.7~5.0mm), thermoplastic FRP (0.4~2.0mm)
  • Core Material: 35~50kg/m³ XPS (extruded polystyrene) foam.
  • Maximum Width: 3.2m
  • Maximum Length: 12m
  • Thickness: 10~150mm

Performance Parameters (Reference)

Skin Thicknessmm2
Core Thicknessmm34
Areal WeightKg/m²0.59
Flexural Strength (Max Load: 2770.659N, Sample Size:300x100x38mm)MPa3.598
Compression Strength (Max Load: 2770.659N, Sample Size:60x60x38mm)MPa0.601
Note:The above values are average values obtained by the laboratory and are for reference only. Actual performance figures vary based on materials, specifications and craftsmanships.

Basic Structure

The upper and lower layers of the composite panel are FRP sheets, and the middle layer is extruded polystyrene foam board. They are laminated with glue in a press into a one-piece panel.

FRP Laminated XPS Foam Composite Panels

How to choose FRP sheet?

We offer two types of FRP, Thermoset FRP and Thermoplastic FRP (we call it CFRT, which stands for Continuous Fiberglass Reinforced Thermoplastic), which have different physical and chemical properties.


FRP faced XPS composite panels are widely used in caravans, refrigerated vehicles, mobile homes, temporary buildings, and yachts. Used as wall panels, floors, roof panels, partitions, door panels, etc.

Features of FRP Foam Composite Panel in TOPOLO

FRP Laminated XPS Foam Composite Panels

Flat and Smooth: The surface of the FRP is flat and smooth, without dirty spots, and there are no obvious marks on the surface of the seams of the foam boards.

No Delamination: FRP and XPS foams are closely bonded and extremely difficult to delaminate.

Stable Performance: It can withstand a high temperature of up to 80°C without deformation, and a low temperature of -40°C without embrittlement.

Processing Technology

  • Add flame retardants and anti-aging agents to increase the safety and service life of the composite panel.
  • For some FRP XPS composite panels that need to increase strength, reinforced structural materials such as timber, aluminum tubes, FRP tubes, high-strength plastic bars, etc. will be embedded inside.
  • CNC processing service: cutting, drilling and grinding of composite panels according to drawings.

To learn more about XPS composite panels, Click Here!