Rigid Core SPC Flooring Structure
Product Definition
Rigid core SPC flooring structure refers to the multi-layer engineered construction of Stone Plastic Composite flooring, designed to deliver dimensional stability, waterproof performance, and high load resistance. The structure integrates mineral-filled core technology with functional surface and backing layers for commercial and residential use.
Technical Parameters and Specifications
The following parameters represent standard engineering benchmarks commonly specified in rigid core SPC flooring projects.
Total thickness: 4.0–7.0 mm (excluding or including IXPE underlay)
Wear layer thickness: 0.3 / 0.5 / 0.7 mm
Core density: 1,900–2,100 kg/m³
Dimensional stability: ≤ 0.05%
Indentation resistance: ≤ 0.1 mm (EN 433)
Locking strength: ≥ 4.5 kN/m
Slip resistance: R9–R10
Formaldehyde emission: ENF / FloorScore compliant
Structure and Material Composition
The rigid core SPC flooring structure is engineered through a layered system, each layer serving a specific functional purpose.
UV Coating Layer: Enhances scratch resistance, stain resistance, and cleanability
Wear Layer: Transparent PVC layer providing abrasion and impact protection
Decor Film: High-definition printed film simulating wood, stone, or concrete visuals
SPC Core Layer: Calcium carbonate and PVC composite delivering rigidity and stability
Backing Layer: Optional IXPE or EVA underlay for sound absorption and comfort
Manufacturing Process
Engineering Production Steps
Raw material batching of PVC resin, CaCO₃, stabilizers, and additives
High-temperature extrusion forming SPC core sheets
Calendering and thickness calibration
Wear layer and decor film lamination
UV surface curing and cooling
CNC cutting and precision locking profile milling
Quality inspection, packaging, and palletization
Key Equipment and Process Controls
High-output twin-screw extrusion lines
Multi-stage calender systems
UV coating and curing lines
Automated CNC profiling machines
Online density and thickness monitoring systems
Industry Comparison
| Flooring Type | Core Stability | Water Resistance | Installation Tolerance | Typical Applications |
|---|---|---|---|---|
| Rigid Core SPC | Very High | 100% Waterproof | High | Commercial / Residential |
| WPC Flooring | Medium | High | Medium | Residential |
| Laminate Flooring | Medium | Low | Low | Dry Indoor Areas |
| Ceramic Tile | Very High | 100% Waterproof | Low | Wet Areas |
Application Scenarios
Rigid core SPC flooring structure is widely adopted across projects requiring durability and installation efficiency.
Distributors: Mid-to-high performance flooring product lines
EPC Contractors: Hotels, offices, healthcare, and education facilities
Developers: Multi-family residential and mixed-use buildings
Engineering Consultants: Renovation and fast-track construction projects
Core Pain Points and Solutions
Subfloor Imperfections: Rigid SPC core bridges minor unevenness without deformation
Moisture Exposure: Mineral-based core eliminates swelling and water damage risks
Heavy Traffic Loads: High-density core maintains joint integrity under load
Installation Time: Click-lock structure enables fast floating installation
Risk Warnings and Mitigation Strategies
Excessive point loads require thickness and wear layer upgrades
Thermal expansion gaps must be respected in large-area installations
Low-quality core formulations may lead to brittleness
Improper locking profiles increase joint failure risk
Procurement and Selection Guide
Define project traffic class and load requirements
Select appropriate wear layer thickness
Verify SPC core density and formulation
Review locking system mechanical test data
Confirm environmental and emission certifications
Request installation and maintenance documentation
Engineering Case Example
A 18,000 m² commercial office renovation specified rigid core SPC flooring structure with 0.5 mm wear layer. The project required installation over existing subfloor with limited leveling. After 24 months of operation, no joint separation or dimensional movement was recorded.
FAQ
What defines rigid core SPC flooring? A high mineral content composite core providing rigidity.
Is SPC flooring fully waterproof? Yes, the core does not absorb water.
How thick should SPC flooring be? Typically 4–7 mm depending on application.
Does SPC require underlayment? Optional, often integrated IXPE backing.
Is SPC suitable for commercial use? Yes, with proper wear layer specification.
Can SPC be installed over existing floors? In many cases, yes.
Is SPC brittle? High-quality formulations minimize brittleness.
How does SPC handle temperature changes? Better stability than WPC or laminate.
Is professional installation required? Recommended for large-scale projects.
What standards apply to SPC flooring? EN, ASTM, and ISO test standards.
Call to Action
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E-E-A-T Author Credentials
This content is prepared by flooring engineers and material specialists with over 15 years of experience in SPC flooring formulation, manufacturing, and global B2B project specification, supporting distributors, EPC contractors, and developers worldwide.
