XPS foam core board is a versatile lightweight composite material consisting of extruded polystyrene foam laminated between durable facers. It offers exceptional thermal insulation, moisture resistance, and rigidity, making it a preferred choice for applications in architectural modeling, signage, construction insulation, and display fabrication.
Product Description
Introducing our premium XPS Foam Core Board, a next-generation engineered composite material designed to set new standards in insulation, structural stability, and design versatility. Engineered for professionals who refuse to compromise on quality, this board represents a significant leap forward from traditional foam core materials, offering unparalleled performance for a vast array of demanding applications across multiple industries.
What is XPS Foam Core Board?
At its core, XPS Foam Core Board is a sophisticated laminate structure. Its heart is a rigid, closed-cell Extruded Polystyrene (XPS) foam, precision-manufactured through a continuous extrusion process. This core is then permanently bonded under high pressure to two smooth, durable facer sheets, typically composed of clay-coated paper, polymer films, or aluminum composites. This fusion creates a material that is remarkably lightweight yet exceptionally strong, flat, and dimensionally stable.
The Superiority of XPS Technology
Unlike its EPS (Expanded Polystyrene) counterparts, XPS is manufactured with a uniform, non-granular closed-cell structure. This fundamental difference is the source of its superior properties:
- Exceptional Moisture Resistance: The closed-cell structure of XPS foam acts as an almost impermeable barrier to water vapor and liquid water. This prevents moisture ingress, which can lead to mold growth, loss of insulating value (R-value), and structural degradation in other materials. Our XPS core maintains its integrity and performance in humid environments.
- Consistent Thermal Insulation: With a high and stable R-value per inch, XPS Foam Core provides reliable, long-term thermal resistance. Its performance does not degrade over time due to moisture absorption, making it a predictable and efficient insulating solution for continuous insulation applications in building envelopes.
- Enhanced Compressive Strength: The extrusion process yields a foam with a higher density and compressive resistance compared to EPS. This allows our boards to withstand significant loads without crushing or permanent deformation, a critical factor in construction substrates, structural insulated panels (SIPs), and heavy-duty displays.
Key Features and Professional Benefits
- Unmatched Lightweight Rigidity: Achieve maximum strength with minimal weight. This property drastically reduces structural load, simplifies handling and installation, and lowers shipping costs, while providing a perfectly rigid, warp-free surface for finishes and claddings.
- Superior Surface for Precision Work: The ultra-smooth, consistent facers provide an ideal substrate for direct-printing, vinyl application, painting, and laminating. They ensure clean, crisp cuts with no grain tear-out, whether using a utility knife, hot wire, or CNC router, enabling intricate detailing for architectural models and signage.
- Excellent Workability and Fabrication: Easy to cut, shape, score, and bend (with kerfing), our board is a fabricator’s dream. It produces minimal dust compared to MDF or gypsum, and its compatibility with a wide range of adhesives (PVA, contact cement, polyurethane foam) and mechanical fasteners offers limitless assembly options.
- Durability and Longevity: Resistant to rot, mildew, and most chemicals, XPS Foam Core does not off-gas or deteriorate over time. It provides a stable, long-lasting base for both temporary installations and permanent constructions.
Technical Specifications at a Glance
The following table summarizes the standard properties of our XPS Foam Core Board:
| Property | Standard Value / Range | Test Standard | Notes |
|---|---|---|---|
| Core Material | Extruded Polystyrene (XPS) | – | Closed-cell, homogeneous structure |
| Standard Thickness | 3mm (1/8″), 5mm (3/16″), 10mm (3/8″), 13mm (1/2″), 19mm (3/4″), 25mm (1″) | – | Custom thicknesses available |
| Standard Sheet Size | 4′ x 8′ (1220mm x 2440mm) | – | Custom sizes available on request |
| Density (Core) | 32 kg/m³ (2.0 lb/ft³) | ASTM C303 | Provides optimal strength-to-weight ratio |
| Compressive Strength | 250 kPa (36 psi) at 10% deformation | ASTM C165 | Excellent load-bearing capacity |
| Thermal Resistance (R-Value) | R-5 per inch (RSI-0.88 per 25mm) | ASTM C518 | Stable, moisture-resistant insulation |
| Water Vapor Permeability | <1.0 perm-inch (ng/Pa·s·m²) | ASTM E96 | Highly resistant to moisture diffusion |
| Flame Spread / Smoke Developed | Class 1 / Class A Rated | ASTM E84 | Meets stringent building code requirements |
| Operating Temperature Range | -50°C to 75°C (-58°F to 167°F) | – | Stable across extreme conditions |
Primary Applications
- Architectural & Construction: Continuous exterior insulation (ci), interior insulation for walls and roofs, structural insulated panels (SIPs), insulated concrete forms (ICFs), and as a stable substrate for exterior cladding systems (EIFS).
- Precision Model Making: The material of choice for architectural models, product prototypes, dioramas, and scale models due to its clean machinability and flawless surface.
- Signage & Display: Ideal for lightweight yet sturdy exhibition stands, trade show displays, point-of-purchase (POP) units, interior signs, and durable backing boards.
- Creative & Fabrication Industries: Widely used in scenic design for theater and film, set construction, photo booth backgrounds, and as a versatile medium for artists and craftsmen.
Commitment to Sustainability
We are committed to responsible manufacturing. Our XPS foam core is produced with a significant percentage of recycled content and is 100% recyclable in dedicated polystyrene recycling streams. Its exceptional durability and insulating properties contribute to energy conservation in buildings over their entire lifecycle.
Ordering & Customization
Available in standard sheet sizes and thicknesses, we also offer comprehensive customization services including pre-cutting, CNC routing, lamination with specialty facers (e.g., fiberglass, aluminum), and custom fabrication to meet your precise project blueprints.
Choose XPS Foam Core Board—where scientific material engineering meets practical design innovation. Elevate your next project with the strength, stability, and versatility that professionals trust.
