Class B Fireproof EPS Core Insulation Panels

Product Details

Class B fireproof EPS core insulation panels is a classic lightweight building envelope material widely used in global industrial and commercial buildings, steel structure factories, and temporary/mobile housing projects. Its extremely high cost-effectiveness, excellent thermal insulation performance, and self-extinguishing fireproof characteristics have made it the first choice for cross-border builders and multinational investors.

In many overseas projects, clients require buildings to have excellent thermal insulation and moisture-proof capabilities, while also strictly adhering to local basic fire protection regulations (such as the Class B fire-retardant standard), and simultaneously locking in initial investment costs (CAPEX). Class B fireproof EPS core insulation panels offer a solution that balances high safety, low cost, and quick installation.

Product Structure

Class B fireproof EPS core insulation panels are manufactured using a fully automated continuous hot-pressing adhesive spraying production line for integrated composite molding, resulting in a clear structure and stable performance.

High-strength outer shell (double-sided color-coated steel sheet): The surface is made of high-strength, corrosion-resistant hot-dip galvanized or aluminized zinc-coated steel sheet (thickness typically 0.4mm–0.8mm). The coating (such as PE/HDP) has excellent UV resistance and aging resistance, unaffected by harsh climates at different latitudes worldwide.

Core material (Class B flame-retardant EPS): The sandwich layer uses modified polystyrene foam (EPS) with added high-performance flame retardants. Its density is typically controlled between 12kg/m³ and 20kg/m³, and its interior consists of countless tiny closed cavities.

High-adhesion curing layer: Using high-polymer composite adhesives from leading international brands, it is continuously sprayed and cured under automated hot press, ensuring extremely high peel strength between the color-coated steel sheet and the EPS core material, preventing delamination during long-term use.

Structure of Fireproof EPS Core Insulation Panels

Core Technical Parameters Table

EPS Insulation Sandwich Wall Panel – Span Table

EPS Insulation Sandwich Roof Panel – Span Table

Core Features and Technical Advantages

1. Superior Fire Safety

• Flame-retardant Class B Standard: Unlike ordinary bulk foam used in civil applications, this product incorporates flame retardants evenly into the EPS foaming material. When exposed to a fire source, the panels do not spread the fire or drip (avoiding secondary fire sources and secondary damage), and self-extinguish after being removed from the external fire source, perfectly meeting the basic fire safety standards for industrial and commercial buildings.

2. Lightweight and High Strength

• Extremely Lightweight: The EPS core material has an extremely low density; the weight of the entire sandwich panel is only about 1/20th that of a traditional concrete wall, significantly reducing the load on the main steel structure of the building (such as H-beams and columns).
• Rigid Bending Resistance: Thanks to the combination of the rigidity of the color steel plate and the supporting strength of the rigid EPS foam, the panels possess excellent lateral bending and compressive strength, performing exceptionally well in large-span steel structure warehouses in South America and Africa.

3. Excellent Thermal Insulation and Moisture Proof

• Low Thermal Conductivity: The thermal conductivity of EPS core is typically ≤0.041W/(m⋅K). It easily blocks the penetration of external scorching sun or biting cold winds.
• Waterproof and Non-absorbent: Its closed-cell structure naturally possesses extremely strong hydrophobicity. In tropical rainy or coastal high-humidity environments, the board will never absorb water, completely eliminating the hidden danger of condensation and mold growth inside the wall.

4. Ultimate Cost-Effectiveness and Rapid Installation

• Highly Competitive Cost: Among all mainstream sandwich panels (such as rock wool, polyurethane, and EPS), EPS sandwich panels have a lower initial investment cost, making them an excellent choice for projects seeking high return on investment (ROI) and high turnover.
• Modular Dry Construction: The boards are precisely cut to length according to project drawings in a large-scale digital factory, and standard tongue-and-groove joints or overlaps are used on-site. 100% weld-free and requiring no secondary trimming, installation is 3-4 times faster than traditional construction, directly halving the overall on-site construction period and local labor costs.

Global Application Scenarios

Due to its high cost-effectiveness and versatile physical properties, Class B fire-resistant EPS core insulation panels are widely used in the following industrial and commercial sectors.

Large industrial plants and steel structure warehouses: Especially for the exterior walls and roofs of logistics distribution warehouses, light industrial processing workshops, agricultural greenhouses, and packaging workshops.

Interior modular/functional room construction: Such as the recently popular modern cannabis house project. Independent, highly airtight, and temperature-controlled storage and production workshops are built inside industrial plants using EPS sandwich panels.

Mobile homes and high-end camp buildings: Multinational mining and oilfield camps, container modular homes, temporary offices, and post-disaster reconstruction housing, etc.

Cleanroom partitions: Large-area interior partition walls in cost-sensitive but essential cleanroom and dust-proof environments, such as in electronics factories and food factories.

Class B fire-resistant EPS core insulation panels are the enduring all-around cost-effective king in the modern prefabricated building supply chain. Partnering with reputable manufacturers with extensive overseas delivery experience (such as Canglong Group), we offer a one-stop, full-service solution, from detailed design and material supply to container shipping and remote/on-site team installation guidance. This will help you secure long-term, high-value commercial and industrial assets with extremely high business turnover in a market environment characterized by global geopolitical and tariff fluctuations.

Sandwich Panel Production Workshop

Sandwich Panel Packing & Shipping

All the products are loaded at the loading site of our factory using crane and forklift by our skilled workers, who will prevent the goods to be damaged. And all the structure components, panels, bolts and sorts of accessories will be well packed with standard package and it is suitable for ocean transport.

Our Certificates

Our sandwich panel certificates include EU CE certification, BPS certification, and ICC certification.

Application of Sandwich Panels

Usage scenario: Insulated sandwich panels are used as exterior walls and interior partitions, installed vertically or horizontally on single span or multi span structures. Such as industrial buildings, steel frame structures, warehouses and logistics centers, commercial buildings and offices, fire-resistant buildings, agricultural and livestock buildings, sports halls, exhibition halls, factories, garages, hangars, barns, prefabricated houses, cold storage, clean room, etc.