Product Description
Our Premium
Expanded Polystyrene (EPS) Insulation Boards are engineered to deliver outstanding thermal efficiency, structural stability, and long-term durability for modern construction projects. Manufactured from high-purity, virgin expandable polystyrene beads through a precision steam-chest molding process, these boards feature a uniform, closed-cell structure composed of up to 98% trapped air. This innovative cellular architecture effectively minimizes heat transfer, making it an indispensable solution for energy-saving buildings, cold storage facilities, and industrial packaging. We offer comprehensive OEM/ODM services to tailor density, dimensions, and fire-retardant grades to your exact project specifications.
Core Advantages of EPS Foam Board
High-Efficiency Stable Thermal Insulation
The closed-cell bead structure of EPS foam board locks massive stationary air inside, featuring low thermal conductivity of 0.035–0.039 W/m·K at 25°C, while graphite-enhanced EPS reaches λ ≤0.033 W/m·K for upgraded insulation R-value. It stably blocks heat transfer between interior and exterior spaces, avoids wall condensation and thermal bridge loss, drastically lowers air conditioning & heating power consumption, and delivers long-term energy-saving performance without thermal attenuation for decades.
Customizable Flame Retardant Fire Safety
Made of expandable polystyrene beads with modified flame retardant formula, we supply two fire grades: standard E self-extinguishing grade and high-performance Euroclass B1 flame retardant grade complying with EN 13501-1. B1-grade EPS will self-extinguish quickly after fire source removal, suppress flame spreading and reduce toxic smoke release, fully matching safety requirements for high-rises, malls, schools and public construction projects.
Excellent Adhesion & Easy Construction
Its porous granular surface creates mechanical occlusion with cement mortar, anti-crack base coat and tile adhesive, solving the common hollowing & peeling defects of smooth rigid foam panels. Ultra-light density ranging from 18–32 kg/m³ minimizes building dead load. The board can be freely cut, trimmed and shaped with simple hand tools on-site, greatly saving labor cost and shortening overall construction cycles.
Low Water Absorption & Dimensional Stability
Independent closed bead channels limit liquid water penetration, with volume water absorption ≤3%. It maintains stable flatness under wide temperature fluctuations from -40℃ to +75℃, without obvious shrinkage, expansion or deformation in coastal, rainy and high-humidity tropical regions, so its insulation capacity will not degrade after long-term damp exposure.
Cost-Effective & Eco-Friendly Raw Material
Produced without CFC, HCFC and formaldehyde foaming agents, EPS foam board is non-toxic, odorless and fully recyclable. Compared with XPS, rock wool, glass wool and PU insulation materials, it owns obvious price advantages for large-volume bulk engineering orders. It is chemically inert against most weak acid, alkali and building mortar additives, with anti-mold and anti-corrosion properties for long service life.
Multi-Scenario Sound Insulation Function
The porous cellular structure effectively absorbs medium and low-frequency noise. When laid on partition walls, suspended ceilings and floor layers, it delivers reliable noise reduction effects for residential buildings, office spaces, mechanical equipment rooms and commercial venues.
Rich Customization & Complete Matching Service
Available in standard sizes 1200×1200mm / 1200×600mm, thickness 20–200mm, optional flat edge or tongue-and-groove interlock edge; single/double-sided aluminum foil lamination, special-shaped cutting and OEM logo printing are supported. We provide complete test reports, installation guidance, and can supply XPS backer board, rubber foam insulation and aluminum foil thermal membrane together for one-stop building insulation sourcing.
Technical Specifications of EPS Foam Board
| Key Attributes | Data | Key Attributes | Data |
| Material | Expandable Polystyrene Boards | Type | Rigid Thermal Insulation Foam Panel |
| Product Name | EPS Foam Board / Expanded Polystyrene Insulation Board | Insulation R-value | R3–R5 (Depends on thickness & density) |
| Product Length | 1200mm / 1200mm | Product Width | 1200mm / 600mm |
| Thickness | 20–200mm (Customizable 10–200mm) | Density | 18 / 20 / 22 / 25 / 30 / 32 kg/m³ (Custom 15–40 kg/m³) |
| Shape | Flat Square Panel | Eco Friendly | Yes, CFC-free & Recyclable |
| Design Style | Construction Standard | Thermal Conductivity | White EPS: 0.035–0.039 W/m·KGraphite EPS: ≤0.033 W/m·K |
| Color | White / Graphite Gray | OEM | Accept OEM Custom Service |
| Brand Name | Customizable | Place of Origin | Guangdong, China |
| Function | Thermal Insulation, Anti-condensation, Sound Absorption, Ground Frost Proof, Wall & Roof Energy Saving | After-sale Service | Online Technical Support, Construction Guide, Free Test Datasheets |
| Packing | Waterproof Kraft Carton / PE Film + Wooden Pallet for Sea Shipment | Warranty | 5 Years Stable Performance Warranty |
| Parameter Item | Detailed Technical Data |
| Facing options | Unfaced white granular surface, single/double-sided aluminum foil lamination, OEM printed logo |
| Standard dimensions | Full size: 2400×1200mm; small size:1200×600mmThickness range:10–150mm; all length/width can be customized |
| Density range | Conventional EPS:18–32 kg/m³; ultra-light 15kg/m³ / high-compression 40kg/m³ availableTolerance: ±10% |
| Thermal conductivity (λ) | @25℃: White EPS ≈0.035–0.039 W/m·KGraphite enhanced EPS ≈0.031–0.033 W/m·K |
| Max continuous service temp | -40℃ ~ +75℃; short-term peak temp up to 80℃ |
| Reaction to fire | Euroclass E (Self-extinguishing standard grade)Euroclass B1 Flame Retardant (EN 13501-1, high fire safety for public buildings) |
| Melting softening point | 80–100℃ (organic polymer, avoid direct open flame long contact) |
| Pore structure | Closed-cell bead foaming structure, average closed cell rate ≥90% |
| Compressive strength | 60kPa (18kg/m³) ~ 280kPa (32kg/m³) |
| Moisture resistance | Good hydrophobicity, volume water absorption ≤3% (standard grade); low-absorption modified ≤1% |
| Water absorption | ≤3 vol.% (24h immersion test) |
| Edge style options | Flat straight edge / Tongue & groove interlock edge for better heat sealing |
| Main applicable standards | EN 13163, ASTM C578, ISO9001 |
| Core application scenarios | Exterior wall ETICS/EIFS system, roof insulation, underfloor heating, basement anti-frost, cold storage, partition wall sound absorption, road lightweight geofoam filling |
Industry Applications
The EPS foam board is a cost-effective rigid closed-cell thermal insulation material widely adopted in global construction, cold chain and civil engineering sectors, with core application scenarios including:
External Wall Insulation
Embedded in exterior thermal insulation composite systems for villas, high-rise apartments, malls and office buildings. Its porous granular surface delivers strong adhesion with mortar and render, effectively cutting indoor-outdoor heat exchange, preventing wall condensation and meeting green building energy-saving codes.
Ceiling & Roof Thermal Insulation
Laid under flat concrete roofs, sloped tile roofs and green vegetated roofs to block solar heat penetration in summer and reduce indoor heat loss in winter, stabilizing indoor temperature and lowering HVAC energy consumption all year round.
Underfloor Heating & Ground Anti-Frost Insulation
Installed beneath floor heating layers and building ground slabs to isolate ground cold transfer, avoid floor heat loss downwards, and serve as frost-proof filling for basement floors, garages and foundation structures in cold regions.
Interior Partition & Ceiling Sound Absorption
Filled inside light partition walls and suspended ceilings to absorb medium-low frequency noise, weaken sound transmission between adjacent rooms, and boost quietness for residences, hotels and office spaces.
Cold Storage & Prefabricated Panel Core
Acts as lightweight core material for cold storage wall/roof insulation, logistics refrigerated warehouses and SIP prefabricated sandwich panels, maintaining stable low-temperature storage environments with low running energy cost.
Civil Engineering Lightweight Backfill
Used as geofoam filler for road subgrade, bridge abutments and landscape slope projects. Its ultra-light weight greatly reduces soil load and avoids foundation settlement risks compared with traditional gravel backfill.
Decor & Protective Auxiliary Use
Processed into carving decorative mouldings for architectural facades, and used as shock-absorbing protective packaging foam for construction accessories, equipment and building decorative parts.
Customization Service
We provide one-stop customization service for EPS foam board tailored to global construction, cold storage and civil engineering project demands:
Size Customization: Custom length, width and thickness (10–150mm, ultra thin 5mm & extra thick 200mm available) according to construction drawings, container loading plans and on-site installation requirements; standard stock size 1200×1200mm / 1200×600mm for fast delivery.
Performance Customization: Adjust density formula (18–32kg/m³ standard, 15–40kg/m³ custom) and flame retardant grade (E self-extinguishing / B1 high flame retardant) for projects with special thermal insulation, frost-proof or fire safety demands; graphite modified low thermal conductivity EPS is available for passive energy-saving buildings.
Facing & Edge Customization: Optional single/double-sided aluminum foil lamination for heat reflection and moisture resistance; two edge styles to choose: flat straight edge or tongue & groove interlock edge to reduce thermal bridge.
OEM Service: Support brand logo printing on panels and export cartons, neutral packaging customization, pallet packing scheme optimization, and bulk order parameter adjustment for building material distributors, HVAC contractors and cold chain manufacturers.
After-sales Support for B2B Clients
Free professional technical datasheets, fire test reports and third-party inspection certificates provided for tender & project filing.
Online one-on-one technical guidance for product selection, on-site cutting and standard construction operations of ETICS/EIFS exterior wall systems.
Flexible shipment matching: small sample dispatch, LCL mixed container and full 20GP/40HQ bulk order arrangements.
Stable production lead time of 5–12 working days upon deposit confirmation; follow-up order tracking throughout production and delivery.
Long-term performance consultation for after-installation problems, matching complementary insulation materials including XPS backer board, rubber foam and aluminum foil thermal membrane for one-stop project sourcing.
FAQ
Q1: Why does EPS foam board achieve great sound absorption performance?
A: It features a porous closed-cell bead structure. With thickness above 20mm, its sound absorption coefficient (αw) reaches 0.7–0.9 within the 800–3500Hz frequency band. It effectively consumes airborne sound energy, reduces indoor reverberation, and weakens medium & low-frequency noise transmission between walls and floors.
Q2: What customizable specifications can I get for EPS foam board?
A: Standard stock sizes are 2400×1200mm and 1200×600mm, thickness ranging 10–150mm (5mm ultra-thin / 200mm extra thick available on custom order). Density can be adjusted from 18–32 kg/m³, and graphite enhanced low-conductivity formula is optional. Custom options include single/double-sided aluminum foil lamination, flat edge / tongue-and-groove interlock edge, special-shaped cutting and OEM logo printing.
Q3: What fire safety standards does EPS foam board comply with?
A: Two fire grades are available: standard Euroclass E self-extinguishing grade and Euroclass B1 high flame retardant grade, fully compliant with EN 13501-1 fire test standards. B1-grade EPS will stop burning rapidly after removing fire source, produce limited smoke, and satisfy fire control demands for high-rises, schools, malls and all public construction projects.
Q4: Can EPS board be used for exterior wall thermal insulation?
A: Yes, it is the core material of ETICS/EIFS exterior wall insulation system. Its rough granular surface creates strong mechanical bonding with anti-crack mortar and exterior coating, avoiding hollowing and peeling defects common on smooth foam panels.
Q5: What is the long-term service temperature range of EPS foam board?
A: Stable continuous operating temperature ranges from -40℃ to +75℃; short-term peak temperature can reach 80℃. Avoid long-term direct contact with open flame or surfaces over 85℃ to prevent softening deformation.
