Prepainted Aluminum Roofing Sheet
Prepainted Aluminum Roofing Sheet
Lightweight Corrugated & Trapezoidal Aluminum Profiles for Extreme Coastal & Marine Environments
| Substrate | Prepainted Aluminum Alloy (AA1050, AA3003, AA3004, AA5052) |
| Roofing Profiles | Corrugated Waves / Trapezoidal Box (IBR) / Standing Seam |
| Feeding Width | 750 / 914 / 1000 / 1200 / 1220 / 1250 mm |
| Effective Width | 665 / 800 / 820 / 900 / 915 / 1050 mm |
| Thickness Range | 0.3 – 1.2 mm (Customizable) |
Custom Roofing Profiles
Multiple Profiles
Corrugated wave, trapezoidal box (IBR), and standing seam profiles for architectural versatility.
Custom Paint Coating
Tailored PE, HDP, or PVDF coatings in full RAL colors with optional protective film.
Lightweight & High Strength
Weighs roughly one-third of steel, reducing building dead-load and simplifying installation.
Ultimate Corrosion Resistance
Naturally rust-free aluminum core provides superior resistance in harsh chemical and coastal air.
Product Specifications
| Parameter | Details |
|---|---|
| Product Name | Prepainted Aluminum Roofing Sheet (Color Coated Corrugated & Trapezoidal Aluminum Sheet) |
| Available Profiles | Traditional Corrugated Waves, Trapezoidal / Box Profile, IBR Profile, Standing Seam |
| Primary Applications | Coastal Buildings, Chemical Plants, High-End Commercial Roofs, Airports & Public Infrastructure |
| Standard Compliance | ASTM B209, EN 485, JIS H4000 |
| Aluminum Alloy Grade | 1000 Series (AA1050 / AA1100), 3000 Series (AA3003 / AA3004 / AA3105), 5000 Series (AA5052 / AA5754) |
| Temper Designation | H14, H16, H18, H24, H26 (Customized for Roll Forming Requirements) |
| Feeding Width (Raw Coil) | 750mm, 914mm, 1000mm, 1200mm, 1220mm, 1250mm |
| Effective Cover Width | 665mm, 800mm, 820mm, 900mm, 915mm, 1050mm (Customizable) |
| Thickness Range | 0.3 – 1.2 mm |
| Paint Coating System | Top Paint: 16–28 µm | Back Paint: 5–15 µm (PE / PVDF Options) |
| Color Selection | Standard RAL Colors (e.g., RAL 9006, RAL 7016, RAL 5010) or Custom Color Matching |
| Bundle Weight / Packaging | 1 – 3 Metric Tons per seaworthy bundle with steel pallets |
Quality Control & Shipping Case
Soft-coated rollers are used to help reduce scratches and surface marks during profiling.
Sheet gauge, width, and wave pitch are checked against the confirmed order and profile tolerances.
Waterproof wrapping and corner caps guard aluminum edges from ocean moisture.
Cushioned strapping and container securing are arranged to help reduce panel movement and friction during transportation.
Buyer Concern & FAQ
Q1: What are the main benefits of Prepainted Aluminum Roofing Sheets compared with steel-based roofing sheets?
Prepainted Aluminum Roofing Sheets provide a lightweight roofing option with good corrosion resistance and multiple color and coating choices. Aluminum has a lower density than steel and is commonly selected for projects where reduced roof weight, decorative appearance, and corrosion resistance are important. Actual suitability depends on the alloy, coating system, environment, roof design, and project requirements.
Q2: Which aluminum alloy series should I choose for my roofing project?
3000 series aluminum alloys, such as 3003, 3004, and 3105, are commonly used for roofing and cladding because they combine formability, corrosion resistance, and practical strength for roll-forming applications. 5000 series alloys can also be selected for projects requiring different strength or corrosion-performance characteristics. The suitable alloy depends on profile design, forming requirements, environment, and project specification.
Q3: How do I choose between PE and PVDF coatings for Prepainted Aluminum Roofing Sheets?
PE (Polyester) coatings are widely used for general roofing and cladding applications where cost and standard outdoor performance are important. PVDF coatings are commonly selected for projects requiring higher weatherability, UV resistance, and color retention. The suitable coating system depends on project environment, expected exposure, color, gloss, service conditions, and budget.
Q4: How do I choose the feeding width and effective cover width for Prepainted Aluminum Roofing Sheets?
Feeding width and effective cover width depend on the selected roofing profile, rib or wave geometry, side overlap, and roll-forming mold. Different profiles can produce different finished cover widths from the same raw coil width. Feeding width, effective width, and profile dimensions should be confirmed before production.
Q5: What standards and quality checks are available for Prepainted Aluminum Roofing Sheets?
Prepainted Aluminum Roofing Sheets can be supplied according to applicable aluminum and coating specifications, including standards such as ASTM B209, EN 485, or JIS H4000, depending on the alloy, temper, coating system, and order requirements. During production, thickness, surface condition, coating appearance, profile dimensions, effective width, and other agreed specifications can be checked according to the order requirements.
