High-Performance Structural Cladding Built for Global Standards
Manufactured by Joint Star Steel Structure Ltd. since 2010 in Dhaka, Bangladesh, our EPS (Expanded Polystyrene) Sandwich Panels provide industrial contractors, pre-engineered building fabricators, and commercial developers with an exceptionally lightweight, energy-saving, and economical thermal envelope solution.
Each composite panel is produced via continuous automated laminating lines, bonding high-tensile pre-painted galvanized steel (PPGI) or Alu-Zinc exterior facings to a flame-retarded, self-extinguishing EPS core using a solvent-free polyurethane structural adhesive. This guarantees continuous joint cohesion, weather tightness, and remarkable dimensional stability across harsh climatic cycles.
With more than 352 completed industrial steel and roofing installations delivered, Joint Star Steel ensures full export-grade fabrication compliance, precision cut-to-length customization, and rapid turnaround for bulk overseas consignments.
Technical Performance & Dimensional Data
Verified structural parameters for procurement managers, structural consultants, and project engineers.
| Parameter | Roof Cladding Profile | Wall Cladding Profile (Tongue & Groove) |
|---|---|---|
| Effective Width | 950 mm / 980 mm / 1050 mm | 950 mm / 1000 mm / 1150 mm |
| Core Material | Modified Expanded Polystyrene (EPS), Self-extinguishing Flame-retardant Grade B1/B2 | |
| Panel Thickness (mm) | 50 mm, 75 mm, 100 mm, 120 mm, 150 mm, 200 mm | |
| Facing Steel Thickness | 0.30 mm to 0.70 mm High-Tensile Color Coated Galvanized Steel | |
| Surface Treatment | Polyester (PE), SMP, or PVDF Coated (20-25μm front / 5-7μm back primer) | |
| Core Density | 12 kg/m³ to 20 kg/m³ (Standard: 16 kg/m³ for optimal stiffness) | |
| Thermal Conductivity (25°C) | 0.038 – 0.041 W/(m·K) | |
| Compressive Strength | ≥ 100 – 120 kPa (at 10% deformation) | |
| Operating Temperature Range | -40°C to +80°C continuous service | |
| Color Options | Off-White (RAL 9002), Sea Blue (RAL 5015), Silver Grey (RAL 9006), or Custom RAL | |
Why Choose Joint Star Steel EPS Panels?
Designed to reduce structural dead loads, expedite jobsite erection, and cut lifetime climate-control costs.
Maximum Cost-to-Performance Ratio
EPS delivers the most economical insulation cost per square meter compared to PU or Mineral Wool, maximizing ROI on large warehouses and sheds.
Superior Thermal Heat Proofing
Significantly reduces solar heat transmission through building roofs and external walls, lowering air conditioning loads and internal ambient heat.
Ultra-Lightweight Dead Load
Light composite design allows longer purlin spans and lighter supporting steel structures, drastically lowering steel foundation material usage.
Flame-Retarded Safety Core
Compounded with specialized fire-retarding chemical agents. Panels are self-extinguishing and will not propagate fire under normal industrial conditions.
Rapid Interlocking Installation
Precision tongue-and-groove jointing and overlapping lap-joints speed up building envelope enclosure by up to 60% compared to traditional masonry.
Exceptional Moisture & Rust Resistance
Closed-cell EPS foam prevents capillary moisture absorption, eliminating waterlogging, bacterial mildew, and internal sheet corrosion.
Where Our EPS Panels Are Deployed
Robust modular performance across industrial, commercial, and agricultural sectors worldwide.
PEB Warehouses & Factories
Fast-track thermal roofing and exterior partition walls for large clear-span manufacturing plants and storage sheds.
Rooftop Commercial Additions
Lightweight rooftop offices and staff recreation rooms that expand floor space without exceeding building structural dead weight.
Modular Camps & Site Offices
Pre-cut modular wall modules for remote mining barracks, infrastructure project offices, and security guard pavilions.
Semi-Cold Storage & Food Processing
Hygienic, washable, and easily sanitized walls for meat processing plants, agricultural packhouses, and controlled fruit ripening hubs.
Strict Quality Control & Seaworthy Packaging
Every square meter undergoes rigorous multi-stage inspection to ensure zero-defect overseas delivery.
Steel Coil Testing
Certified inspection of zinc coating mass, paint adhesion (T-bend test), surface hardness, and tensile yield strength before uncoiling.
Automated Continuous Lamination
Computer-monitored adhesive dispensing and synchronized roll forming ensure consistent foam-to-steel bonding with zero cavity defects.
Precision Cut-to-Length
Continuous traveling flying saw delivers exact project lengths with square, burr-free cuts, eliminating tedious cutting at the jobsite.
Seaworthy Export Packing
Full-face PE protective film, rigid corrugated edge armor, and reinforced strapping protect bundles during ocean freight containerization.
Questions from Global Buyers
Practical guidance for import procurement managers, overseas builders, and project estimators.
What core density is used in Joint Star Steel EPS sandwich panels?
We provide core densities of 12 kg/m³, 16 kg/m³, and high-density 20 kg/m³. For standard PEB industrial roofing and walls, 16 kg/m³ provides the ideal balance between structural rigidity, load-deflection limits, and thermal resistivity.
Can Joint Star Steel export EPS sandwich panels overseas?
Yes. Our factory in Dhaka is fully equipped to manufacture export-oriented consignments. Panels are packaged with heavy-duty protective wrap, marked clearly according to client packing schedules, and loaded systematically to maximize container space utilization in 20ft or 40ft HQ containers.
What are the fire resistance characteristics of your EPS panels?
Our EPS cores incorporate certified fire-retardant additives meeting class B1/B2 fire standards. The core is self-extinguishing, which means that when the ignition flame is removed, the foam ceases to burn, effectively eliminating progressive flaming.
What sheet thicknesses and coatings are available for the exterior skins?
We supply steel skin thicknesses ranging from 0.30mm up to 0.70mm using hot-dip galvanized or Alu-Zinc coated substrates. Outer coats include standard Polyester (PE), Super Polyester (SMP), or PVDF coatings designed to withstand severe ultraviolet radiation and coastal atmospheric exposure.
Do you supply complete installation accessories like flashing, ridge caps, and screws?
Yes. Joint Star Steel provides a full turnkey system package including color-matched ridge covers, drip flashings, corner trims, internal PVC coving, and corrosion-resistant self-drilling fasteners with weatherproof EPDM washers.