Economic & Technical Executive Summary: Expanded Polystyrene (EPS) panels provide optimal capital expenditure efficiency for agricultural cold storage, fruit logistics hubs, cleanroom packaging areas, and positive-temperature food holding rooms (0°C to +15°C). With capital costs equal to merely 50% – 60% compared to panel PU, EPS insulated panels enable project investors to compress Return on Investment (ROI) horizons down to just 12 – 18 months.
1. Structural Composition & Thermal Principles of EPS Insulated Panels
EPS panels are manufactured from virgin polystyrene resin beads thermally expanded to contain 98% trapped still air by volume. Through high-pressure block molding and vacuum stabilization, EPS achieves flawless fusion integrity:
- High-Density Compressed EPS Core: Tan Long strictly rejects low-density residential construction foam (10-12 kg/m³). All industrial refrigeration EPS panels conform to rigid density thresholds of 16 kg/m³, 18 kg/m³, 20 kg/m³, and 24 kg/m³. This density guarantees robust partition structural rigidity, high wind load resistance, and static load capacity for suspended ceilings.
- Heavy-Duty Exterior Steel Facings: Aluzinc pre-painted antibacterial steel sheets of 0.40mm – 0.50mm protected by PE strippable film against erection scratches. Surfaces are lightly profiled with stiffening micro-ribs or finished mirror-flat for GMP cleanrooms.
- Airtight Z-Lock Tongue-and-Groove Interlock: Both longitudinal panel edges feature precision 20mm deep Z-lock interlocking profiles. When joined, panels snap tightly together and are sealed with neutral industrial silicone, forming a smooth monolithic thermal envelope.
Export vegetable chilled warehouse utilizing 20 kg/m³ EPS panels with airtight Z-lock joinery
2. Technical Specifications Matrix of Tan Long EPS Cold Storage Panels
| Parameter | Technical Specification | Application Notes |
|---|---|---|
| EPS Core Density | 16 – 24 kg/m³ | Configured per load requirements |
| Thermal Conductivity (λ) | 0.035 – 0.038 W/m.K | Ideal for 0°C to 25°C temperature envelope |
| Effective Panel Width (W) | 1,000mm – 1,160mm | Seamless modular assembly |
| Core Thickness (T) | 50mm, 75mm, 100mm, 125mm, 150mm | Customized per thermal heat load |
| Panel Length (L) | Custom cut (up to 12 meters) | Minimizes horizontal joints |
| Compressive Strength | ≥ 80 – 120 kPa | High vertical load resistance |
| Joint Configuration | Airtight Z-Lock tongue-and-groove with concealed screws | 3x faster erection than masonry |
3. When to Choose EPS Panels Over PU or PIR?
Selecting the proper insulation core prevents capital expenditure over-specification. EPS panels deliver peak financial returns in the following scenarios:
- Agricultural Produce & Fruit Cold Storage: Storage facilities holding potatoes, carrots, dragon fruit, bananas, mangoes, and durian within +2°C to +12°C. In this temperature spectrum where temperature differential (Delta T) is only 15°C – 25°C, 100mm EPS panels provide dependable thermal retention with zero condensation risks.
- Seed Germination, Floral & Pharma Storage: Operating temperature requirements from +10°C to +18°C coupled with precision humidity management (65% - 85% RH).
- Food Processing Partitions & Staging Airlocks: Creating hygienic packaging cleanrooms complying with ISO 22000, easy to sanitize, and effortlessly demountable for plant expansions.
- Short-Term Leased Facilities (3 – 5 Years): Low upfront expenditure enables operators to amortize investments rapidly while preserving product quality.
4. Factory Direct EPS Panel Price Quotations (2026)
Factory-gate pricing at Tan Long's Duc Hoa 1 facility remains highly competitive via direct coil procurement and high-speed automated foaming:
- 50mm EPS Panel (Density 16 kg/m³, 0.40mm steel skin): From 240.000 – 275.000 VND/m²
- 75mm EPS Panel (Density 18 kg/m³, 0.42mm steel skin): From 290.000 – 330.000 VND/m²
- 100mm EPS Panel (Density 20 kg/m³, 0.45mm steel skin): From 345.000 – 390.000 VND/m²
- 150mm EPS Panel (Density 22 kg/m³, 0.45mm steel skin): From 420.000 – 480.000 VND/m²
- To receive volume discounts for orders exceeding 1,000m² or explore turnkey refrigeration machinery budgets, please visit our 2026 Cold Storage Installation Price Quotation Guide.
In-Depth Technical FAQs on EPS Cold Storage Panels
1. Can EPS panels be used for -18°C sub-zero frozen meat and fish storage?
Tan Long strictly ADVISES AGAINST using EPS panels for sub-zero freezers at -18°C or colder. Although upfront costs are lower, extreme vapor pressure differentials between ambient and sub-zero air will inevitably drive moisture into inter-bead voids. This causes internal core freeze-up, structural delamination, and excessive refrigeration compressor runtime doubling electricity costs. For freezers, always specify Camlock PU sandwich panels.
2. Are EPS panels fire-resistant for facilities under strict fire safety regulations?
Standard EPS is combustible upon direct exposure to open flame. While Tan Long manufactures flame-retardant EPS (blended with self-extinguishing brominated additives), for industrial facilities requiring certified fire appraisals under Decree 136/QCVN 06:2022, the premier choice is Fire-retardant B1/B2 PIR panels or basalt mineral Rockwool panels.
3. What is the expected service lifespan of EPS cold room panels?
When professionally installed in sheltered indoor environments, with joints sealed and utilized within positive temperature ranges (+2°C to +15°C), Tan Long's 18-20 kg/m³ EPS panels deliver reliable performance for 10 to 15 years.
4. How long does it take to erect a 200m² agricultural cold room with EPS panels?
Thanks to lightweight Z-lock modularity, Tan Long's installation crews can erect the entire wall, ceiling, anodized aluminum trim, and cold storage doors for a 200m² facility within just 3 to 5 business days.
5. Are EPS panels vulnerable to rodent and insect damage?
The EPS core is 100% enclosed between rigid 0.40mm+ pre-painted steel skins. Furthermore, all floor junctions are capped with anodized aluminum U-channels bedded in structural silicone, completely barring pests and rodents from reaching the inner core.
6. Does Tan Long custom-cut EPS panels to precise room drawings?
Yes. Tan Long's manufacturing facility cuts panels to exact blueprint dimensions (tolerance within 2mm), minimizing on-site trimming, eliminating scrap waste, and reducing overall construction costs.
