Among the leading contenders, aluminium roofing coil stands out as a superior choice. Its lightweight nature and long lifespan make it an increasingly popular building material for both residential and commercial projects worldwide.
Classification of Aluminium Roofing Coil
Classification Category
Sub-Classification
Description
By Surface Finish
Mill Finish
Natural, untreated aluminum surface. Offers a utilitarian look and is the most economical. It will dull over time if exposed.
Stucco Embossed
Features a textured surface resembling orange peel or plaster. Helps to reduce glare, hide minor imperfections, and adds rigidity. Often used for insulation jacketing or specific aesthetic preferences.
By Coating Type
PE (Polyester) Coated
A polyester paint system applied to the surface. Offers good color retention, flexibility, and a wide range of colors. A common choice for general purpose color coated aluminium coil.
PVDF (Polyvinylidene Fluoride) Coated
A high-performance, multi-layer fluorocarbon polymer coating. Known for superior color stability, UV resistance, corrosion resistance, and long-term durability, especially in harsh environments.
Anodized
An electrochemical process that thickens the natural oxide layer, enhancing corrosion resistance, hardness, and allowing for various metallic color tones. Less common for large roofing surfaces.
Thickness: A Critical Specification for Roof Performance
The thickness of aluminium roofing coil is a fundamental factor that determines the strength, durability, weight, and ultimately. The performance and cost of the resulting aluminium roofing sheet. Thicker coils yield more robust and impact-resistant panels.
Thickness Range (mm)
Typical Imperial (Inches)
Characteristics & Common Uses for Formed Sheets
Impact on Cost
0.4mm – 0.6mm
0.016″ – 0.024″
Lighter gauge, more flexible. Suitable for smaller structures like sheds, carports, and residential roofs where structural loads are minimal. Cost-effective for budget-conscious projects requiring lightweight material.
Lower
0.6mm – 0.8mm
0.024″ – 0.031″
Standard range for residential and light commercial aluminium roofing sheet. Offers a good balance of strength, durability, and cost-effectiveness. Popular for corrugated aluminium roofing sheet and simple profiles.
Medium
0.8mm – 1.2mm+
0.031″ – 0.047″+
Heavier gauge, providing superior strength, rigidity, and impact resistance. Ideal for industrial buildings, large-span roofs, and areas exposed to severe weather conditions or heavy snow loads. Often uses stronger aluminium alloy.
Higher
Choosing the appropriate aluminium roofing coil thickness ensures the optimal balance between performance and investment for any roofing project.
Alloy: The Core of Aluminium Roofing Coil Properties
The specific aluminium alloy used for the aluminium roofing coil dictates its mechanical properties, including its formability, strength, and inherent corrosion resistance.
Alloy Series
Common Alloys
Key Characteristics Relevant to Roofing Coil
Price Impact
Typical Applications for Formed Sheets
1000 Series (Pure Al)
1050, 1100
Commercially pure aluminum. Excellent corrosion resistance, high formability, and good thermal conductivity. Relatively softer, making it easy to form.
Lower
Flashing, gutters, decorative elements, and some less demanding roofing where extreme strength is not required.
3000 Series (Al-Mn)
3003, 3004, 3105
Moderate strength, good workability, and excellent corrosion resistance. Stronger than 1000 series while maintaining good formability for various profiles. 3003 aluminium alloy is very common for roofing.
Medium
General purpose residential and commercial aluminium roofing sheet, corrugated aluminium roofing.
5000 Series (Al-Mg)
5005, 5052, 5754
Higher strength than 1000/3000 series, with exceptional corrosion resistance, particularly in marine environments. Good weldability.
Higher
Coastal properties, high-wind areas, industrial roofing where superior durability and strength are paramount.
Packaging: Safeguarding Your Aluminium Roofing Coil
Proper aluminium coil packaging is crucial for protecting the material during transport and storage, preventing damage such as dents, scratches, or moisture-induced corrosion. Manufacturers employ robust methods to ensure the aluminium roofing coil arrives in optimal condition, ready for forming.
Packaging Component
Purpose
Inner Core Protection
The coil is wound onto a sturdy paper or steel core to maintain its shape and prevent collapse during handling and transport.
Moisture-Proof Wrapping
Multiple layers of waterproof paper, plastic film, or desiccant bags are used to wrap the coil, protecting it from humidity, rain, and oxidation, especially during long transit.
Edge Protection
Cardboard or plastic corner protectors are applied to the coil edges to prevent damage from impacts during loading, unloading, and stacking.
Steel Strapping
Robust steel bands are used to secure the coil tightly, preventing unraveling or shifting of the layers during transport.
Wooden Pallets/Skids
Coils are typically placed on fumigated wooden pallets or skids. This facilitates easy and safe handling with forklifts and ensures stable stacking.
Wooden Crates/Boxes
For maximum protection, especially for overseas shipping or highly delicate/expensive coils (e.g., color coated aluminium coil), robust wooden crates or boxes are used.
Eye-to-Sky / Eye-to-Wall
Coils are typically packaged either with the “eye” (center hole) facing upwards (eye-to-sky) or horizontally (eye-to-wall) for optimized stability during shipping and storage.
Benefits of Aluminium Roofing Coil
The increasing demand for aluminium roofing coil stems from the numerous advantages it offers as a building material:
Benefit
Description
Exceptional Durability
Known for its long lifespan, often exceeding 50-70 years. It stands up well to harsh weather conditions, including extreme temperatures, heavy winds, and hail.
Superior Corrosion Resistance
Aluminum naturally forms a passive oxide layer that protects it from rust and corrosion, even in coastal or industrial environments. A major advantage over steel roofing.
Lightweight Nature
Significantly lighter than steel, concrete tiles, or asphalt shingles. This reduces the structural load on the building, simplifies installation, and can lower transportation costs.
Energy Efficiency
High reflectivity helps bounce sunlight away from the building, keeping interiors cooler and potentially reducing air conditioning costs. Particularly effective with light-colored color coated aluminium coil.
Fire Resistance
Aluminum is non-combustible, offering excellent fire safety properties, making it a safe choice for any structure.
Sustainability
100% recyclable at the end of its life cycle without loss of quality, making it an environmentally friendly and sustainable roofing material.
Low Maintenance
Requires minimal maintenance over its long lifespan, primarily periodic cleaning. It does not rot, crack, or warp.
Aesthetic Versatility
Can be formed into a wide array of profiles and comes in various finishes and colors (especially color coated aluminium coil), allowing for diverse architectural styles.
Applications of Aluminium Roofing Coil
The versatility and beneficial properties derived from aluminium roofing coil make it suitable for a wide range of applications across various industries:
Application Area
Specific Uses of Formed Aluminium Roofing Sheet
Residential Buildings
Primary roofing for modern and traditional homes seeking long-lasting, energy-efficient, and low-maintenance solutions.
Commercial Buildings
Roofing for offices, retail centers, schools, and hospitals due to its durability, fire resistance, and long lifespan.
Industrial Facilities
Roofing for factories, warehouses, power plants, and chemical processing units, benefiting from its robust nature and corrosion resistance in demanding environments.
Agricultural Structures
Barns, stables, animal shelters, and storage facilities, leveraging its lightweight nature, durability, and ease of installation.
Coastal & Humid Regions
Ideal for properties in marine or high-humidity environments where corrosion resistance is paramount.
Challenging Climates
Performs exceptionally well in areas with heavy rain, snow loads, high winds, or extreme temperature fluctuations.
Architectural Projects
Utilized for modern architectural designs where sleek lines (e.g., standing seam) or specific color coated aluminium coil finishes are desired for aesthetic impact.
Surface Coating Options
Coating Type
Description
Mill Finish
Smooth, uncoated aluminum surface
PE Coated
Polyester paint for indoor and mild outdoor use
PVDF Coated
High-performance fluorocarbon coating for outdoor use
Embossed
Stucco pattern to enhance aesthetics and stiffness
Available Tempers
Temper Code
Meaning
H14
Semi-hard for better forming
H24
Harder and more durable
H26
High-strength, less flexibility
Common Questions
🔸 What is the difference between PE and PVDF coating?
PE (Polyester): More economical, suitable for standard roofing.
PVDF (Fluorocarbon): Higher UV/weather resistance, ideal for harsh environments.
🔸 Is aluminum roofing better than galvanized steel?
Aluminum is lighter, more corrosion-resistant, and more durable, though slightly more expensive.
🔸 Can aluminum coil be painted?
Yes, it comes pre-painted or can be custom color coated based on project needs.
Packaging & Delivery
Packaging Type
Details
Eye to Sky
Coil placed vertically for container loading
Eye to Wall
Coil placed horizontally on wooden pallet
Protective Layer
PE film or kraft paper between layers
Export Packaging
Strong wooden pallet, moisture-proof cover
Why Choose Worthwill Aluminum?
Worthwill Aluminum offers:
In-house coil production & color coating
Full range of thicknesses and colors
Short lead times and on-time delivery
Free samples & customized specifications
Whether you’re a contractor, builder, or roofing manufacturer, Worthwill ensures high-quality aluminum coil solutions tailored to your needs.
Buying Considerations
Factor
What to Look For
Coating Quality
PVDF for premium projects, polyester for budget
Alloy Selection
Match alloy to environmental conditions
Supplier Reputation
Check certifications (ISO, ASTM)
Delivery Options
Ensure proper coil handling during transit
Technical Support
Supplier should provide installation guidance
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