fiberglass XPS Foam sandwich panels manufacturer

Fiberglass XPS sandwich panels are made from a combination of fiberglass skins and XPS foam with a flat surface. Adopting a high-pressure curing process, they combine the common advantages. They have the characteristics of UV resistance, good heat preservation, high strength, and rigidity. They can replace traditional composite materials.
We can provide you with customized CNC machining, embedded reinforcing materials, and better UV resistance.

  • Lightweight material, easy to install and to process.
  • UV-resistant, not easy to corrode.
  • Good thermal insulation can provide a good thermal insulation effect.

Features

Composite-box is a manufacturer specializing in fiberglass XPS sandwich foam panels. Its FRP skins are gel-coated and bonded using adhesives that do not come off. The core uses XPS (extruded polystyrene insulation), which is a continuous process that creates a closed-cell structure that is 99 percent waterproof. The surface is smooth, and the density and thickness of the foam core can be customized. It provides excellent thermal insulation with a service life of up to 50 years.

Strength can be enhanced through the use of FRP skin, which has excellent corrosion resistance, weather resistance, and waterproof performance.

Below are their properties:
  • High-strength material
  • Long service life
  • Customised dimensions
  • Lightweight material
  • Corrosion- and UV-resistant
  • Easy to process
  • Water- and moisture-resistant
fiberglass XPS foam panels

Application

Automotive sector:

Fiberglass XPS Sandwich Refrigerated Small Enclosed Trailer
Fiberglass Sandwich Refrigerated Small Enclosed Trailer
refrigerated truck
Flower refrigerated truck transporter left ramp
Light Weight Refrigerated Pickup Body Slide-In
Light Weight Refrigerated Pickup Body Slide-In
Introduction to RV Fiberglass Panels
Introduction to RV Fiberglass Panels

Construction Sector:
Suitable for insulation layers in building roofs, wall panels, and exterior walls. Also applicable for farms and mobile homes. Enhances waterproofing, corrosion resistance, and offers excellent thermal insulation with improved soundproofing.

constructions

Marine Sector:
Used in manufacturing ships, pontoons, yachts, and fishing vessels. XPS foam features low density for stability, while its closed-cell design effectively prevents moisture penetration.

Boat Deck

Industrial Applications:
Suitable for cold storage warehouses, equipment insulation casings, and thermal insulation applications. We offer customized fire-retardant properties to reduce costs and emissions. Extensive CNC machining capabilities are available.

PU foam insulated mobile house (2)

Custom Fiberglass XPS Sandwich Panels

Fiberglass XPS sandwich panels offer numerous customization options. Below are the custom features we support:

Dimension Customization:

  • Fiberglass skin thickness: 0.6–5mm
  • XPS foam thickness: 10–120mm, with densities ranging from 70–205kg/m³
  • Overall dimensions: Length ≤11.8m, width ≤3.2m

Appearance Customization:

  • Fiberglass skin options: Zhanhe fiberglass woven fabric
  • Surface textures: Checkered, bubble, fabric patterns, etc.
  • Surface finishes: Matte, glossy, white, black, gray
  • Special treatments: UV-resistant gel coating, flame-retardant process (adding flame retardants to achieve fire ratings B1/B2/B3). Our products contain no asbestos.

Customization Process:

Our customization process is straightforward. Clients provide specific requirements, including application scenarios and parameter specifications. Our team delivers precise evaluations and tailored solutions. After manufacturing samples, we conduct testing to ensure compliance with client specifications—such as fire ratings and waterproof performance—before proceeding to mass production. Our experts provide full support throughout order tracking and production. We strive to deliver the desired value and performance while offering the highest level of service.

Structure of fiberglass XPS

fiberglass XPS foam panels 3

XPS foam

XPS stands for Extruded Styrene Foam Board, which has good insulation properties and is used for thermal insulation. It is a rigid closed-cell material that does not absorb water and has a long life.

RV fiberglass sheets 2

FRP sheet

FRP is an excellent high-performance material, consisting of glass fiber reinforcement. It has high performance, high strength, and UV resistance.

Special Processing

CNC Machining: We offer CNC equipment for drilling, cutting, engraving, and other operations on sheet materials. This enables the creation of various shapes and functionalities. We possess multiple imported CNC machines.

Reinforced Structures: For applications in refrigerated trucks and RVs, we embed high-strength materials like aluminum tubes or FRP tubes within the sheet material. This significantly enhances its bending resistance and load-bearing capacity, ensuring minimal deformation over extended use.

Surface Treatment: We enhance performance through various coatings and processes, including UV-protective coatings and flame-retardant treatments, which modify material properties.

Composite Process: Our fully automated vacuum composite line bonds fiberglass and XPS foam with excellent adhesion, improving overall performance.

Advantages of Glass Fiber XPS Foam Sandwich Panels

  • Superior Thermal Insulation: With thermal conductivity as low as 0.024–0.034 W/m·K, it effectively reduces energy consumption. Ideal for refrigerated transport and building insulation, maintaining stable temperatures.
  • Lightweight and Easy to Process: Density ranges from 35–45 kg/m³, facilitating cutting and installation. Reduces vehicle weight, enhancing transport efficiency and operational convenience.
  • Waterproof and Corrosion-Resistant: Closed-cell structure with water absorption below 1%, resisting moisture and chemical corrosion for long-term use in marine or industrial environments.
  • Fire-Resistant and Durable: Meets Class B1 fire rating, withstands temperature fluctuations from -50°C to +80°C, and boasts a service life exceeding 20 years.
  • Environmentally Sustainable: Recyclable material free of asbestos components reduces carbon emissions, meeting modern eco-standards for green building projects.
  • High Cost-Effectiveness: Offers 20% cost savings compared to traditional materials. Lightweight design lowers maintenance and transportation expenses, enhancing overall economic efficiency.

Application of fiberglass XPS panel

This product is ideal for applications that require thermal insulation properties and waterproofing. For example, interior insulation, building insulation, vehicle insulation, etc.

  • Refrigerated Truck
  • Refrigerated trailers
  • Cold storage wall panels
  • Mobile homes
  • Caravans
  • Yacht and plane interiors
fiberglass XPS foam panels 3

Product Parameters

Product Specifications

ItemSpecification
Skin MaterialFRP (Fiberglass Reinforced Plastic), CFRT (Continuous Fiber Reinforced Thermoplastic), Aluminum Sheet, Plywood, Stainless Steel Sheet, Aluzinc Steel, etc.
Core MaterialXPS (Extruded Polystyrene Foam Board)
Total Thickness10~120 mm
Length Range≤12m
Width Range≤3.2m
Surface TreatmentGlossy, Matte, Embossed, etc.
Surface ColorRAL Color Series
Composite MethodEco-friendly Adhesive
Processing MethodCNC Machining, Embedded Structure Reinforcement

Technical Specifications

ItemSpecification
Core Density30~50 kg/m³
Compression Strength0.1~1 MPa (depending on core thickness)
Flexural Strength36.966 MPa (Max Load: 2770.659N, Sample Size: 300x100x14 mm)
Operating Temperature-50℃ ~ +80℃
Waterproof PerformanceExcellent, core material has 99% waterproof ability
UV ResistanceExcellent, FRP skin enhances UV resistance
Thermal InsulationExcellent, XPS foam provides superior thermal insulation
Corrosion ResistanceExcellent, surface treatment enhances corrosion resistance
Moisture ResistanceGood, XPS foam has excellent moisture resistance
Expected Service LifeUp to 50 years
Core Density35~55 kg/m³
Closed Cell Rate≥99%
Thermal Conductivity0.024~0.034 W/m·K
Water Absorption≤1%
Operating Temperature-50℃ ~ +80℃

Custom Processing

Embedded Reinforcement Structures

Embedded Reinforcement Structures

To enhance strength and functionality, reinforcement materials can be embedded within composite panels. Options include plywood, aluminum alloy profiles, GRP tubes, steel structural components, and more.

Multi Material Composite Processing

Multi-Material Composite Processing

We specialize in composite processing of materials such as FRP, CFRT, and foam cores, delivering superior performance while meeting diverse application requirements.

High Precision CNC Machining

High-Precision CNC Machining

Advanced CNC machining centers enable high-speed precision cutting, complex contour milling, drilling, and more.

Edge Processing 1

Edge Processing

Edge finishing and connector integration are performed according to specific requirements. Services include edge wrapping, chamfering and grinding, waterproofing, and embedded nuts.

FAQ

Commonly used foams for sandwich panels include polyvinyl chloride (PVC), extruded polystyrene foam (XPS), polyurethane foam (PU), and polyethylene terephthalate foam (PET). These foams are high performance and have excellent insulation and impact resistance.

XPS foam board is made of XPS (Extruded Polystyrene) material, which is a kind of foam with closed cell structure, so it has the advantage of non-absorption of water.

Production process: XPS foam board in the production process through the extrusion process of polystyrene resin is heated, plasticized, and through the expansion of the gas to form foam.

The service life of XPS insulation board is usually 15 to 50 years, depending on the environment and frequency of use.

why choose us?

Customer Satisfaction

Insisting on high quality products and servers, centered around customer experience.

Quality Assurance

We strictly control every production process to bring reliable quality assurance to our customers.

Advanced Production Line

The world’s top production line ensures product precision and efficiency.

Customization

We provide 100% customization, making orders less difficult.