Galvalume Roofing Sheet
Galvalume roofing sheet is popular for commercial, residential, agricultural, and industrial applications. It is covered with a coating of aluminum-zinc alloy, which gives it superior corrosion and heat resistance.
Due to its superior performance, it is an ideal option for homeowners, contractors, architects, and investors. HBYeson Steel has a wide range of galvalume metal roofing sheets in sizes and designs to meet your requirements. Welcome to contact us for more details!
As a leading manufacturer of galvalume roofing sheet, HByeson steel have sixteen roll corrugated forming machines, which can produce more than 20 roofing shapes and models. We adheres to strict quality standards to guarantee that galvalume corrugated roofing sheet meet customer’s requirements.
Specifications of Galvalume Roofing Sheet
| Épaisseur | 0.15mm-0.8 mm |
| Overall Width | 700mm-1,250 mm |
| Effective Width | 600mm-1,050 mm |
| Al-Zn Coating Content | Aluminum (Al) 55%, zinc (Zn) 43.5%, silicon (Si) 1.5% |
| Al-Zn Coating Thickness | 60 g/㎡-185 g/㎡ |
| Longueur | As per your requirements |
| Standard | GB, JIS, ASTM, EN |
| Traitement de surface | Passivation, fingerprint resistance, oiling, pre-painting, etc. |
Quality Control and Self-inspection
Yeson steel have the advanced testing equipment and professional team. Yeson steel strictly control the quality on each step of production, including inspection on raw materials, product’s thickness and width test, zinc coating test, T-bend test, impact test, tensile test, salt-spray test and package testing on exported steel coil, which ensures its integrated performance and quality.
Aluzinc coil processs
1)Decoiling–Cleaning–Annealing–Zinc pot–Cooling-Air Knife–Straightening–Post-Treatment–Coiling
2)Surface treatment:
Chromated / skin pass/ oiled/Anti-finger-AFP
3)Aluzinc Characteristic
■ Formability
Reach for rolling, stamping, bending, and other forms of processing.
■ Heat resistance
Ordinary hot-dip galvanized products are usually used at a temperature not exceeding 230 ℃ and will change color at 250 ℃. However, Aluminized zinc sheets can be used for a long time under an environment of 315 ℃.
■ High reflectivity
The reflectivity is more significant than 0.70, better than the 0.65 specified by EPA Energy Star. It is an ideal building material for energy saving.
Benefits of Galvalume Roofing Sheet
1. Superior Corrosion Resistance
The aluminum layer offers galvalume steel excellent corrosion resistance. When the zinc is worn away, the aluminum forms a dense layer of aluminum oxide, preventing corrosion-resistant substances from further corroding the interior. So the corrosion resistance of GL sheet is 3 times that of galvanized sheet. The service life of GL roofing sheet is 2-6 times that of GI roofing sheet under the same circumstances.
2. High Heat Reflectivity
Its reflection coefficient is twice that of galvanized metal roofing sheet, which can reduce the indoor temperature in summer and reduce the power consumption of air conditioner. This feature makes it perfect for hot climates.
3. High-temperature Resistance
GL roofing sheet has good heat resistance and can withstand high temperatures of more than 300 degrees. Therefore, it can be used for a long time at high temperatures.
4. Smooth Surface & Uniform Appearance
Galvalume roofing sheet is smooth, silvery-white in color with uniform spangles. It looks beautiful and can be used directly. Hence, it is widely used in commercial and residential uses.
5. Great Formability & Adhesion
The adhesion between GL coating and paint is good, which makes it easy to paint. Also, it has great formability. That is, it is easy to stamp, cut, etc.
These features of galvalume roofing make it popular in many projects. At Wanzhi Steel, we promise to offer you quality roofing sheets. Besides, third party quality inspection is acceptable. So no matter where you will use the roofing sheets, you can try GL roofing panels.
Uses for Galvalume Roof Panels
Galvalume steel roofing sheets are used for residential and commercial roof installation projects.
1. Commercial buildings – hospitals, schools, stores, government buildings, etc.
2. Residential projects – private homes, apartments, makeshift houses, garages, etc.
3. Industrial applications – warehouses, factories, and more.
4. Agricultural uses – barns, storage houses, greenhouses, etc.
FAQ
Is galvalume better than aluminum for roofing?
Considering the steel strength, galvalume is stronger than aluminum sheets since Al is kind of softer. Also, the GL sheet is much cheaper than aluminum sheets. That’s why galvalume roofing is better and more popular.
How long will a galvalume roof last?
Generally, the service life of a galvalume metal roof is more than 50 years.
Can galvalume roofing panels be painted?
Yes, it can be painted if you want. Galvalume coating has good adhesion. Just remember to use suitable paints.
Is galvalume roofing sheet more expensive?
Generally, it is more expensive than galvanized roofing sheet (with the same coating thickness). But the GL metal roof price is not the most expensive. Moreover, it can last more than 50 years. The long lifespan makes it more cost-effective.
