Last updated: July 31, 2026
Quick Answer
Sandwich panel standard sizes typically range from 950mm to 1200mm in width, with lengths extending from 2 meters to 12 meters depending on the manufacturer and application. The most common sandwich panel standard size for roofing is 1000mm wide by 6 meters long, while wall panels often measure 1150mm wide. Thickness options span from 50mm to 200mm, with 75mm and 100mm being the most popular choices for general construction projects.
Key Takeaways
- Standard widths range from 950mm to 1200mm, with 1000mm and 1150mm being most common
- Panel lengths typically extend from 2m to 12m, with 6m being the standard for most applications
- Thickness options include 50mm, 75mm, 100mm, 125mm, 150mm, and 200mm variations
- Roofing panels generally use 1000mm width while wall panels prefer 1150mm width
- Custom sizes are available but cost 15-25% more than standard dimensions
- Weight varies from 10-25 kg per square meter depending on core material and thickness
- Standard sizes reduce waste, lower costs, and simplify installation processes
- Different core materials (EPS, PU, Rockwool) may have slightly different standard size offerings
- Transportation limits often determine maximum panel lengths available in specific regions
What Are Sandwich Panels
Sandwich panels are composite building materials consisting of two outer metal sheets bonded to an insulating core material. These panels combine structural strength with thermal insulation in a single lightweight component, making them ideal for industrial buildings, cold storage facilities, and modern construction projects.
The outer sheets are typically made from galvanized steel, aluminum, or other coated metals, while the core can be expanded polystyrene (EPS), polyurethane (PU), or mineral wool (Rockwool). This construction method creates panels that are significantly lighter than traditional building materials while maintaining excellent insulation properties and structural integrity.
Common applications include:
- Industrial building walls and roofing
- Cold storage and refrigeration facilities
- Agricultural buildings and poultry farms
- Clean rooms and pharmaceutical facilities
- Temporary structures and modular buildings
The standardization of sandwich panel dimensions has evolved to meet transportation constraints, installation efficiency, and material optimization requirements across different markets and applications.
Standard Sandwich Panel Dimensions Overview
Standard sandwich panel dimensions follow industry conventions developed to balance material efficiency, transportation logistics, and installation practicality. Most manufacturers align their standard sizes with these established dimensions to ensure compatibility across different suppliers and reduce project costs.
Width specifications:
- 1000mm: Most common for roofing applications, provides optimal water drainage
- 1150mm: Standard for wall panels, maximizes coverage area
- 950mm: Alternative width for specific architectural requirements
- 1200mm: Less common, used for large-scale industrial applications
Length specifications:
- 2-4 meters: Short panels for residential or small commercial use
- 6 meters: Industry standard length, balances handling and coverage
- 8-10 meters: Extended lengths for large buildings, requires crane installation
- 12 meters: Maximum standard length, limited by transportation regulations
The choice between different standard dimensions depends on building design, structural requirements, and local transportation capabilities. Projects using standard sizes typically see 20-30% cost savings compared to custom-sized panels.
Sandwich Panel Thickness Options
Sandwich panel thickness directly impacts thermal performance, structural capacity, and overall building efficiency. Standard thickness options are designed to meet specific performance requirements while maintaining cost-effectiveness and installation simplicity.
Available thickness ranges:
- 50mm: Basic insulation for mild climates, lightweight applications
- 75mm: Standard thickness for most commercial buildings
- 100mm: Enhanced insulation for cold storage and industrial use
- 125mm: Heavy-duty applications requiring superior thermal performance
- 150mm: Specialized cold storage and freezer applications
- 200mm: Maximum standard thickness for extreme climate conditions
Thicker panels provide better thermal insulation but increase material costs and structural load requirements. The complete guide to choosing sandwich panel thickness helps determine optimal thickness based on climate conditions, building use, and energy efficiency goals.
Selection criteria:
- Climate zone and temperature requirements
- Building code insulation standards
- Structural load limitations
- Budget constraints and energy cost considerations
Most commercial projects use 75mm or 100mm thickness panels, which provide excellent thermal performance while remaining cost-effective for standard applications.
How Much Do Sandwich Panels Cost
Sandwich panel costs vary significantly based on size, thickness, core material, and market conditions. Standard-sized panels typically cost less per square meter due to manufacturing efficiencies and reduced waste during production.
Price factors affecting standard sizes:
- Core material: EPS panels cost 20-30% less than PU or Rockwool options
- Thickness: Each 25mm increase adds approximately 15-20% to base cost
- Panel width: 1000mm and 1150mm widths have the most competitive pricing
- Order quantity: Bulk orders of standard sizes receive 10-15% volume discounts
Standard sandwich panels in Bangladesh typically range from 800-2500 BDT per square meter, with current sandwich panel pricing reflecting material costs and market demand.
Cost comparison by application:
- Basic EPS wall panels (75mm): 800-1200 BDT/sqm
- Standard PU roofing panels (100mm): 1500-2000 BDT/sqm
- Fire-rated Rockwool panels (125mm): 2000-2500 BDT/sqm
Custom sizes typically add 15-25% to standard pricing due to specialized manufacturing requirements and reduced production efficiency.
Sandwich Panels vs Traditional Insulation
Sandwich panels offer significant advantages over traditional insulation methods when considering standard sizing, installation speed, and overall performance. The comparison becomes particularly relevant for large-scale construction projects where efficiency matters.
Installation efficiency:
- Sandwich panels: Single-step installation covers structure and insulation
- Traditional method: Requires separate framing, insulation, and cladding steps
- Time savings: Sandwich panels reduce installation time by 60-70%
- Labor requirements: Fewer skilled trades needed for panel installation
Performance comparison:
- Thermal bridging: Sandwich panels minimize thermal bridges compared to framed construction
- Air tightness: Better sealed joints reduce air infiltration
- Moisture control: Integrated vapor barriers prevent condensation issues
- Structural integrity: Composite action provides superior strength-to-weight ratios
Cost analysis:
- Higher material costs offset by reduced labor and installation time
- Better long-term energy performance reduces operational costs
- Lower maintenance requirements over building lifetime
- Faster project completion reduces financing costs
The standardized dimensions of sandwich panels make them particularly suitable for industrial and commercial applications where speed and performance are priorities.
Best Sandwich Panels for Roofing
Roofing applications require sandwich panels that can handle weather exposure, structural loads, and thermal cycling while maintaining long-term performance. Standard roofing panel dimensions are optimized for these demanding conditions.
Optimal roofing specifications:
- Width: 1000mm standard width provides proper water drainage overlap
- Length: 6-8 meter lengths minimize joints and potential leak points
- Thickness: 100-125mm for most climates, 150mm for extreme conditions
- Core material: PU foam offers best moisture resistance for roofing
Performance requirements:
- Weather resistance: Coated steel faces protect against UV and corrosion
- Structural capacity: Must support snow loads, wind uplift, and maintenance traffic
- Thermal performance: Prevents condensation and reduces energy costs
- Fire resistance: Meets building code requirements for roof assemblies
The complete roofing installation guide covers proper installation techniques for standard-sized roofing panels.
Common roofing mistakes to avoid:
- Using wall panel widths (1150mm) for roofing applications
- Insufficient overlap at panel joints
- Inadequate fastening for wind uplift resistance
- Poor flashing details at panel terminations
Standard roofing panels typically last 25-30 years with proper installation and maintenance, making them cost-effective for most commercial and industrial buildings.
Sandwich Panel Installation Problems
Installation challenges often arise from improper handling of standard-sized panels or failure to account for dimensional tolerances during construction. Understanding common problems helps ensure successful project completion.
Dimensional coordination issues:
- Building tolerance: Structure must accommodate panel dimensions with proper clearances
- Panel expansion: Thermal movement requires expansion joints every 30-40 meters
- Foundation alignment: Misaligned foundations create installation difficulties
- Opening coordination: Doors and windows must align with panel joint locations
Handling and transportation:
- Panel damage: Improper lifting damages panel edges and faces
- Storage requirements: Panels must remain flat and dry during storage
- Site access: Large panels require adequate crane access and maneuvering space
- Weather protection: Installation should avoid high winds and precipitation
Installation sequence problems:
- Starting installation without proper layout and measurement
- Inadequate temporary bracing during panel installation
- Poor joint sealing leading to air and water infiltration
- Incorrect fastener selection or spacing
The professional installation service guide provides detailed procedures for avoiding these common installation problems.
Quality control measures:
- Pre-installation building survey to verify dimensions
- Panel inspection upon delivery to identify damage
- Proper lifting equipment and techniques for large panels
- Weather monitoring to ensure suitable installation conditions
Can You Cut Sandwich Panels to Custom Size
Standard sandwich panels can be cut to custom dimensions on-site or at fabrication facilities, though this process requires proper equipment and techniques to maintain panel integrity and performance.
Field cutting capabilities:
- Length adjustments: Panels can be cut to shorter lengths using circular saws with appropriate blades
- Width modifications: Limited width adjustments possible but may affect structural properties
- Opening cuts: Door and window openings require careful cutting and edge sealing
- Core protection: Cut edges must be sealed to prevent moisture infiltration
Cutting equipment requirements:
- Metal cutting blades: Carbide-tipped blades designed for sandwich panels
- Core material considerations: Different techniques needed for EPS, PU, and Rockwool cores
- Edge sealing materials: Appropriate sealants and closure strips for cut edges
- Safety equipment: Proper ventilation and protection when cutting certain core materials
Performance impact of cutting:
- Thermal bridging: Cut edges may create thermal bridges if not properly sealed
- Structural capacity: Width modifications can reduce panel load capacity
- Warranty considerations: Field modifications may void manufacturer warranties
- Code compliance: Cut panels must still meet building code requirements
Best practices for custom cutting:
- Plan cuts to minimize waste and maintain structural integrity
- Use manufacturer-approved cutting techniques and materials
- Seal all cut edges immediately to prevent moisture infiltration
- Document modifications for warranty and inspection purposes
Custom cutting adds 10-20% to installation time and may increase material costs due to waste and additional sealing requirements.
Sandwich Panels for Walls vs Floors
Different applications require specific sandwich panel configurations, with wall and floor panels having distinct standard size requirements and performance characteristics.
Wall panel specifications:
- Standard width: 1150mm optimizes coverage and reduces joint quantity
- Typical thickness: 75-100mm provides adequate insulation for most climates
- Length range: 3-8 meters based on building height and crane capacity
- Orientation: Vertical installation with horizontal joints minimizes water infiltration
Floor panel requirements:
- Structural capacity: Must support live loads, equipment, and traffic
- Standard dimensions: Often custom-sized to match structural bay dimensions
- Thickness range: 150-200mm for adequate load-bearing capacity
- Surface requirements: Non-slip surfaces and proper drainage considerations
Application-specific considerations:
- Wall panels: Focus on thermal performance and weather resistance
- Floor panels: Emphasize structural capacity and durability
- Joint details: Different sealing requirements for horizontal vs vertical applications
- Support systems: Floor panels require continuous structural support
Installation differences:
- Wall panels can span between structural supports
- Floor panels require full bearing on structural elements
- Different fastening patterns and load transfer mechanisms
- Varying tolerance requirements for dimensional accuracy
The wall cladding guide provides detailed specifications for wall panel applications, while floor applications typically require custom engineering analysis.
Are Sandwich Panels Fireproof
Sandwich panels are not inherently fireproof, but fire-resistant options are available using specific core materials and face sheet treatments designed to meet building code fire safety requirements.
Fire resistance by core material:
- EPS core: Combustible material, requires fire-resistant treatments or barriers
- PU core: Self-extinguishing formulations available, better fire performance than EPS
- Rockwool core: Non-combustible mineral fiber provides best fire resistance
- PIR core: Improved fire performance compared to standard PU foam
Fire rating classifications:
- Class A: Non-combustible materials, typically Rockwool core panels
- Class B: Limited combustibility, treated PU or PIR cores
- Class C: Moderate flame spread, standard EPS with fire barriers
- Fire barriers: Additional protection systems for combustible core panels
Building code requirements:
- Occupancy type: Different fire ratings required for various building uses
- Building height: Taller buildings often require non-combustible materials
- Egress requirements: Fire ratings affect exit design and spacing
- Insurance considerations: Fire-rated panels may reduce insurance premiums
The comprehensive fire safety guide details fire-resistant sandwich panel options and code compliance requirements.
Fire safety best practices:
- Select appropriate core material for building occupancy and height
- Install proper fire barriers at panel joints and penetrations
- Maintain clear egress paths and proper exit signage
- Regular inspection and maintenance of fire protection systems
Fire-rated sandwich panels typically cost 30-50% more than standard panels but may be required by building codes for certain applications.
Sandwich Panel Weight per Square Meter
Sandwich panel weight varies significantly based on face sheet thickness, core material density, and overall panel thickness. Understanding weight characteristics is essential for structural design and transportation planning.
Weight by core material (100mm thickness):
- EPS core panels: 10-12 kg per square meter
- PU core panels: 12-15 kg per square meter
- Rockwool core panels: 18-25 kg per square meter
- PIR core panels: 13-16 kg per square meter
Factors affecting panel weight:
- Face sheet gauge: Thicker steel increases weight by 2-4 kg/sqm per gauge increase
- Core density: Higher density cores provide better performance but increase weight
- Panel thickness: Each 25mm thickness increase adds 2-4 kg/sqm depending on core material
- Coating systems: Premium coatings add minimal weight (0.5-1 kg/sqm)
Structural implications:
- Foundation design: Panel weight affects foundation loading requirements
- Structural framing: Lighter panels reduce structural member sizes and costs
- Seismic considerations: Panel weight influences seismic design requirements
- Transportation limits: Vehicle weight limits affect delivery logistics
Installation considerations:
- Crane capacity: Panel weight determines required lifting equipment
- Manual handling: Panels over 15 kg/sqm typically require mechanical lifting
- Safety factors: Heavier panels require additional safety precautions during installation
- Storage requirements: Ground bearing capacity must support stacked panel loads
The thermal performance guide includes weight considerations for different panel specifications and applications.
Where to Buy Sandwich Panels
Purchasing sandwich panels requires careful supplier selection to ensure quality, standard sizing availability, and reliable delivery schedules. The supplier choice significantly impacts project success and long-term panel performance.
Supplier evaluation criteria:
- Standard size inventory: Availability of common dimensions reduces lead times
- Quality certifications: ISO standards and building code approvals
- Manufacturing capacity: Ability to meet project schedules and quantities
- Technical support: Engineering assistance and installation guidance
Local vs international suppliers:
- Local advantages: Shorter delivery times, lower transportation costs, easier communication
- International options: Potentially lower costs, specialized products, advanced technologies
- Quality considerations: Verify standards compliance regardless of supplier location
- Service capabilities: Local support for installation and warranty issues
Purchasing considerations:
- Lead times: Standard sizes typically available within 2-4 weeks
- Minimum quantities: Bulk orders required for best pricing
- Payment terms: Standard commercial terms vs project-specific arrangements
- Delivery logistics: Transportation and unloading capabilities
The comprehensive supplier guide provides detailed information about reputable sandwich panel suppliers and selection criteria.
Quality verification steps:
- Request product certifications and test reports
- Inspect sample panels before large orders
- Verify dimensional accuracy and finish quality
- Confirm warranty terms and service support availability
How Long Do Sandwich Panels Last
Sandwich panel lifespan depends on material quality, environmental conditions, installation practices, and maintenance programs. Properly installed standard-sized panels typically provide 25-30 years of service life with appropriate care.
Lifespan by core material:
- EPS core panels: 20-25 years with proper installation and maintenance
- PU core panels: 25-30 years, excellent long-term stability
- Rockwool core panels: 30+ years, non-degrading mineral fiber core
- PIR core panels: 25-30 years, similar to PU with improved fire resistance
Environmental factors affecting lifespan:
- Climate conditions: Extreme temperatures and humidity affect panel performance
- Coastal environments: Salt exposure requires premium coatings for longevity
- Industrial atmospheres: Chemical exposure may accelerate deterioration
- UV exposure: Roofing panels face more severe weathering than wall applications
Maintenance requirements:
- Annual inspections: Check for damage, loose fasteners, and seal integrity
- Cleaning programs: Remove dirt and debris that can cause corrosion
- Sealant replacement: Refresh joint sealants every 10-15 years
- Coating maintenance: Touch up scratches and damaged areas promptly
Warranty considerations:
- Material warranties: Typically 10-20 years for face sheet coating systems
- Performance warranties: Thermal and structural performance guarantees
- Installation warranties: Separate coverage for installation workmanship
- Prorated coverage: Understanding how warranty value decreases over time
The detailed warranty guide explains warranty terms and maintenance requirements for different panel types.
Signs of panel replacement needs:
- Visible corrosion or coating failure on face sheets
- Thermal performance degradation indicated by energy cost increases
- Structural damage from impact or excessive loading
- Moisture infiltration causing core material deterioration
Sandwich Panels for Cold Storage Requirements
Cold storage applications require specialized sandwich panel specifications that go beyond standard dimensions to address extreme temperature differentials and moisture control requirements.
Cold storage panel specifications:
- Minimum thickness: 150mm for standard refrigeration, 200mm for freezer applications
- Core material: PU foam preferred for moisture resistance and thermal performance
- Vapor barriers: Continuous vapor barrier systems prevent moisture infiltration
- Joint systems: Specialized tongue-and-groove or cam-lock joint designs
Temperature-specific requirements:
- Cooler applications (0-5°C): 150mm PU panels with standard vapor barriers
- Freezer applications (-18°C): 200mm PU panels with enhanced vapor barrier systems
- Deep freeze (-40°C): Custom thickness panels with specialized joint systems
- Blast freezing: Reinforced panels to handle rapid temperature cycling
Installation considerations:
- Thermal bridging: Minimize structural thermal bridges through panel system
- Expansion joints: Accommodate thermal movement from temperature differentials
- Floor integration: Proper connection between wall and floor panel systems
- Penetration sealing: Careful sealing of all electrical and mechanical penetrations
Performance requirements:
- Thermal conductivity: Maximum U-values specified by refrigeration design
- Air tightness: Minimize infiltration loads on refrigeration equipment
- Moisture control: Prevent condensation and ice formation within panel system
- Structural capacity: Support refrigeration equipment and racking systems
The complete cold storage guide provides detailed specifications for cold storage panel applications and installation requirements.
Common cold storage mistakes:
- Using standard thickness panels for freezer applications
- Inadequate vapor barrier installation at panel joints
- Poor integration between different building envelope components
- Insufficient attention to thermal bridging at structural connections
FAQ
What is the most common sandwich panel standard size?
The most common sandwich panel standard size is 1000mm wide by 6 meters long with 100mm thickness. This size provides optimal balance between coverage area, handling convenience, and thermal performance for most commercial applications.
Can I use 1150mm wide panels for roofing?
While 1150mm panels can be used for roofing, the standard 1000mm width is preferred because it provides better water drainage overlap and follows established roofing practices. The 1150mm width is optimized for wall applications.
What happens if I need panels longer than 12 meters?
Panels longer than 12 meters require custom manufacturing and special transportation arrangements. Most manufacturers can produce panels up to 16-18 meters, but costs increase significantly and delivery logistics become more complex.
Are standard sizes the same across different manufacturers?
Most manufacturers follow similar standard dimensions (1000mm and 1150mm widths), but exact specifications may vary slightly. Always verify dimensions with your specific supplier before finalizing building designs.
How much extra do custom sizes cost compared to standard?
Custom-sized sandwich panels typically cost 15-25% more than standard sizes due to manufacturing setup requirements and reduced production efficiency. The exact premium depends on how far the custom size deviates from standard dimensions.
What thickness should I choose for my climate zone?
For moderate climates, 75-100mm thickness is adequate. Cold climates require 125-150mm, while extreme cold or specialized applications may need 200mm thickness. Consult local building codes and energy requirements for specific recommendations.
Can sandwich panels be cut on-site to fit?
Yes, sandwich panels can be cut on-site using proper equipment and techniques. However, all cut edges must be sealed immediately to prevent moisture infiltration, and structural capacity may be affected by width modifications.
How do I calculate how many panels I need?
Divide your wall or roof area by the effective coverage area of your chosen panel size. Add 5-10% for waste and cutting. Remember that panel width includes overlap, so effective coverage is slightly less than actual width.
What's the maximum span for sandwich panels without support?
Maximum span depends on panel thickness, loading conditions, and deflection limits. Typical spans range from 4-8 meters for wall applications and 3-6 meters for roofing, but structural analysis is required for specific projects.
Do all sandwich panel types come in the same standard sizes?
Most core materials (EPS, PU, Rockwool) are available in standard sizes, but some specialized products may have limited size options. Fire-rated and high-performance panels sometimes have different standard dimensions.
How long is the typical delivery time for standard sizes?
Standard-sized sandwich panels typically have 2-4 week delivery times from stock, while custom sizes may require 6-8 weeks. Large projects should allow additional time for manufacturing and logistics coordination.
What storage space do I need for standard panels?
Standard panels require flat storage on level ground with proper support every 2-3 meters. A typical project requires storage area approximately 1.5 times the building footprint to accommodate panel delivery and staging.
Conclusion
Understanding sandwich panel standard size options is crucial for successful construction projects, cost control, and optimal building performance. Standard dimensions of 1000mm and 1150mm width, combined with lengths up to 12 meters and thickness options from 50mm to 200mm, provide flexibility for most commercial and industrial applications while maintaining manufacturing efficiency and cost-effectiveness.
The choice between different standard sizes should consider application requirements, structural constraints, transportation logistics, and installation capabilities. Wall applications typically benefit from 1150mm wide panels, while roofing applications perform best with 1000mm widths. Thickness selection depends on climate conditions, building codes, and thermal performance requirements.
Key action steps for your project:
- Evaluate your specific requirements against available standard sizes to minimize custom modifications
- Consult with suppliers early to confirm standard size availability and delivery schedules
- Coordinate building design with standard panel dimensions to optimize material usage
- Consider installation logistics including crane access and panel handling requirements
- Verify local building codes to ensure selected panel specifications meet regulatory requirements
For specialized applications like cold storage facilities or industrial buildings, work with experienced suppliers who can provide technical guidance on optimal standard sizes and specifications. Proper planning and size selection will result in faster installation, lower costs, and better long-term building performance.
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