Container house panels are steel-skinned sandwich panel systems engineered for shipping container homes, expandable houses, and modular dwellings, delivering high thermal insulation and weather-tight performance under wind loads and transport cycles. The outer skins use color-coated galvanized steel or aluzinc AZ150 sheet at 0.4-0.6mm thickness, offering 3-6 times the corrosion resistance of standard galvanized steel for coastal and tropical deployments.
The PU/PIR polyurethane core delivers superior thermal insulation at density of 38-42 kg/m³ with thermal conductivity as low as 0.022-0.026 W/(m·K), while rock wool cores at 80-120 kg/m³ provide A1 non-combustible fire ratings for permanent dwellings. EPS cores at 14-18 kg/m³ offer a cost-effective lightweight option for budget container house projects, with closed-cell structure that resists moisture and will not sag or settle over time.
Standard total panel thickness ranges from 50mm to 200mm, with effective widths of 950mm, 1000mm, and 1150mm and lengths up to 11.8m for 40HQ container loading. Skins are joined to the core through continuous high-pressure lamination or foaming lines, with tongue-and-groove or cam-lock joint profiles engineered for fast on-site assembly in 1-3 days without complex auxiliary materials.
These container house panels serve shipping container conversions, expandable granny flats, modular homes, and relocatable dwellings. They meet relevant building standards, achieving wind load resistance of 0.6-1.5 kPa and seismic grade 8 resistance, with PE, HDP, or PVDF coatings in standard RAL colors formulated to resist UV degradation, chalking, and corrosion during prolonged outdoor exposure.
Your Trusted Manufacturer for Container House Panel
RaxPanel is a direct manufacturer of steel-skinned sandwich panels based in Hebei, China, with over 15 years of continuous production experience. Our in-house R&D, design, and production capabilities deliver consistent bonding strength, dimensional accuracy, and structural integrity for container house builders and modular housing developers operating worldwide.
With a daily production capacity exceeding 1,700 m² and exports to more than 50 countries and regions, RaxPanel combines scale with strict quality control to meet modular building standards. Every panel undergoes verified continuous lamination and foaming to support reliable thermal and structural performance over 15+ years of service life.
- Color-coated galvanized steel or aluzinc AZ150 skins at 0.4-0.6mm with PE, HDP, or PVDF coatings.
- PU/PIR polyurethane core at 38-42 kg/m³ with thermal conductivity of 0.022-0.026 W/(m·K).
- Tongue-and-groove and cam-lock joints for fast on-site assembly in 1-3 days.
- Wind load resistance of 0.6-1.5 kPa and seismic grade 8 for relocatable dwellings.
| Parameter | Value |
|---|---|
| Skin Material | Color-coated galvanized steel / Aluzinc AZ150 |
| Skin Thickness | 0.4-0.6 mm |
| Core Material | PU / PIR / Rock Wool / EPS |
| Core Density | PU/PIR: 38-42 kg/m³; Rock Wool: 80-120 kg/m³; EPS: 14-18 kg/m³ |
| Total Panel Thickness | 50 / 75 / 100 / 120 / 150 / 200 mm |
| Effective Width | 950 / 1000 / 1150 mm |
| Max Length | 11.8 m (40HQ container) |
| Thermal Conductivity | PU/PIR: 0.022-0.026 W/(m·K); Rock Wool: 0.040 W/(m·K) |
| Fire Rating | Rock Wool: A1; PIR: B1; EPS: B2 |
| Wind Load Resistance | 0.6-1.5 kPa |
| Seismic Resistance | Grade 8 |
| Joint Type | Tongue & Groove / Cam-lock |
| Surface Coating | PE / HDP / PVDF in RAL colors |
| Process | Continuous high-pressure lamination / foaming |
| Applications | Container houses, expandable homes, modular dwellings |
| Service Life | 15+ years |
Container House Panel Buying Guide & FAQ
Selecting the right container house panel requires understanding core materials, skin specifications, joint design, and structural load ratings. This guide answers the most common questions from container house builders, modular housing developers, and prefab contractors evaluating steel-skinned sandwich panels for shipping container conversions and expandable dwellings.
1. What is the difference between PU, rock wool, and EPS cores for container houses?
PU/PIR polyurethane at 38-42 kg/m³ delivers the best thermal conductivity of 0.022-0.026 W/(m·K), ideal for energy-efficient permanent dwellings in extreme climates. Rock wool at 80-120 kg/m³ achieves A1 non-combustible fire ratings for occupant safety compliance. EPS at 14-18 kg/m³ offers the lowest cost and lightest weight for budget temporary structures where fire codes allow B-grade cores.
2. What steel skin thickness and coating do I need for my container house?
Steel skin thickness ranges from 0.4mm to 0.6mm depending on structural and corrosion requirements. Standard galvanized steel suits inland temperate climates, while aluzinc AZ150 substrates deliver 3-6 times the corrosion resistance for coastal and tropical deployments. PVDF coatings offer the highest UV and weather resistance for 20+ year service life, while PE coatings suit budget projects in mild climates.
3. Why do container house panels use tongue-and-groove or cam-lock joints?
Tongue-and-groove and cam-lock joint profiles enable fast on-site assembly in 1-3 days without complex auxiliary materials, while preventing thermal bridging and maintaining weather-tight integrity under wind-driven rain. The interlocking design distributes shear stress evenly across the wall envelope, ensuring the container house maintains structural and insulation performance throughout transport and relocation cycles.
4. How is the skin-to-core bond verified for container house service?
Bonding is produced through continuous high-pressure lamination or foaming lines that create monolithic skin-to-core adhesion. This prevents delamination under wind load, transport vibration, and thermal cycling. The continuous production process ensures consistent thickness deviation and bonding strength, ensuring the container house envelope maintains thermal and structural integrity throughout its 15+ year service life.
5. Which panels resist corrosion in coastal and tropical climates?
Aluzinc AZ150 steel skins deliver 3-6 times the corrosion resistance of standard galvanized steel, making them the preferred choice for coastal, marine, and tropical container house deployments. PVDF and HDP coatings provide additional UV and chemical resistance, preventing chalking and color fade under prolonged sun exposure while maintaining the aesthetic and protective performance of the envelope.