Galvalume Roofing Sheet
Galvalume Roofing Sheet
55% Al-Zn Corrugated & Trapezoidal Box Profiles (IBR) for Roofing & Wall Cladding
| Substrate | 55% Al-Zn Galvalume Steel (GL) |
| Roofing Profiles | Corrugated Waves / Trapezoidal Box (IBR) |
| Feeding Width | 750 / 914 / 1000 / 1200 / 1220 / 1250 mm |
| Effective Width | 665 / 800 / 820 / 900 / 915 / 1050 mm |
| Thickness Range | 0.115 – 0.8 mm (Customizable) |
Custom Roofing Profiles
Corrugated Wave Profile
Trapezoidal Box Profile
Glazed Step Tile Profile
IBR Profile
Multiple Profiles
Corrugated wave, trapezoidal box, and IBR profiles for versatile applications.
Flexible Coating Mass
Customizable AZ30 to AZ150 g/m² Al-Zn coating options for high heat reflection and anti-rust protection.
Ultra-Thin Options
Available in thin gauges down to 0.115 mm with full-hard structural rigidity.
Container-Optimized Lengths
Precision-cut lengths (e.g., 5.8m / 11.8m) engineered for maximum ocean container utilization.
Product Specifications
| Parameter | Details |
|---|---|
| Product Name | Galvalume Roofing Sheet (GL Corrugated & Trapezoidal Sheet) |
| Available Profiles | Traditional Corrugated Waves, Trapezoidal / Box Profile, IBR Roofing Profile |
| Primary Applications | Industrial Warehouses, Agricultural Sheds, Residential Roofs, Wall Cladding & Temporary Fencing |
| Standard Compliance | ASTM A792, EN 10346, JIS G3321 |
| Feeding Width (Raw Coil) | 750mm, 914mm, 1000mm, 1200mm, 1220mm, 1250mm |
| Effective Cover Width | 665mm, 800mm, 820mm, 900mm, 915mm, 1050mm (Customizable) |
| Thickness Range | 0.115 – 0.8 mm |
| Sheet Length | 1800 – 11800 mm (Tailored for 20ft / 40ft Container Loading) |
| Al-Zn Coating Mass | AZ30 – AZ150 g/m² (55% Aluminum, 43.4% Zinc, 1.6% Silicon) |
| Surface Surface Treatment | Regular Spangle, Anti-Fingerprint (AFP Passivated), Chromated / Oiled |
| Mechanical Hardness | Full Hard (G550 / HRB 85–95) or Commercial Grade (G300) |
| Bundle Weight / Packaging | 2 – 5 Metric Tons per seaworthy bundle with steel pallets |
Quality Control & Shipping Case
Calibrated forming rollers guarantee smooth crest profile and tight panel interlocking.
Rigorous verification of sheet gauge, coverage width, diagonal tolerance, and cut length.
Heavy-duty waterproof wrapping and galvanized outer covers protect edges during ocean transit.
Wooden skids and steel wire reinforcement secure bundles to prevent shifting at sea.
Buyer Concerns (FAQ）
Q1: Why do (GL) Galvalume roofing sheet provide better heat resistance and lower interior temperatures than Galvanized (GI) sheets?
A: Galvalume steel (55% Al-Zn alloy coating) has a high thermal reflectivity surface that reflects a significant portion of sunlight and radiant heat back into the atmosphere instead of absorbing it. This helps reduce heat buildup under the roof, keeping building interiors noticeably cooler in warm climates.
Q2: What is the difference between corrugated wave sheets and trapezoidal (box profile/IBR) roofing sheets?
A: Corrugated sheets feature traditional round wave profiles suitable for standard residential or agricultural roofs, while trapezoidal (box profile / IBR) sheets offer higher water discharge capability and structural strength, making them ideal for industrial facilities and commercial roofs.
Q3: How do I choose the correct feeding width and effective cover width for my roofing project?
A: Feeding width is the initial flat GL coil width (e.g., 1000mm or 1200mm). After roll forming, the effective cover width (e.g., 800mm or 900mm) represents the actual installation coverage per sheet after overlapping. We assist you in calculating sheet quantities to minimize material waste.
Q4: What sheet lengths are recommended for sea container transportation?
A: For standard 20ft containers, maximum length is usually kept within 5.8 meters (5800mm); for 40ft containers, lengths up to 11.8 meters (11800mm) are recommended to maximize space utilization and cut ocean freight costs.
