Galvanized Steel Roofing and Sidings
About Galvanized Steel Roofing and Sidings
Galvanized steel roofing and siding panels offer excellent corrosion resistance from their zinc coating. Conforming to ASTM A653, these panels provide structural integrity for building envelopes and cladding systems.
Quick Facts
- Material: Galvanized Steel (Zinc-Coated Carbon Steel)
- ASTM Standard: A653
- Available Sizes: 24 & 26 gauge; 8 ft, 10 ft, 12 ft lengths
- Location: Los Angeles warehouse
- Services: Custom size, same-day pickup
Overview
Galvanized steel roofing is produced by applying a protective zinc coating to a carbon steel base, a process specified by ASTM A653. This hot-dip galvanization creates a durable, weather-resistant barrier that prevents rust and corrosion, significantly extending the service life of the material. The result is a cost-effective and low-maintenance material ideal for residential, commercial, and agricultural building exteriors, providing reliable protection against the elements.
Available in various profiles, such as classic corrugated or ribbed panels, this material combines functional performance with aesthetic flexibility. The underlying steel provides a minimum yield strength of 36,000 PSI for structural applications, ensuring panels can withstand wind and load requirements. Its lightweight nature simplifies installation for roofing structures, wall cladding, and agricultural buildings, making it a practical choice for both new construction and renovation projects.
Technical Specifications
Mechanical Properties (Typical for base steel)
| Property | Value | Unit |
|---|---|---|
| Tensile Strength | 58,000-80,000 | PSI |
| Yield Strength | 36,000 | PSI |
| Elongation | 20 | % |
Applicable Standards
- ASTM A653: Standard Specification for Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) by the Hot-Dip Process.
Common Applications
- Residential Construction: Roofing panels, garage siding, and decorative awnings - for its weather resistance and longevity.
- Commercial Buildings: Wall cladding, mansards, and facade panels - providing a durable and economical exterior finish.
- Agricultural Structures: Barn roofing, shed walls, and livestock enclosures - due to its high corrosion resistance in rural environments.
- Industrial Facilities: Warehouse siding, workshop roofs, and equipment shelters - offering robust protection and minimal maintenance.
- Fencing & Barriers: Privacy fences, windbreaks, and sound walls - chosen for its strength and outdoor durability.
- Architectural Accents: Interior wall panels, wainscoting, and soffits - for a modern, industrial aesthetic.
- DIY Projects: Small sheds, carports, and covered patios - because it is lightweight and easy to install.
Working with Galvanized Steel Roofing and Sidings
Cutting
Galvanized steel sheets can be cut using metal shears, snips, or a circular saw with a metal-cutting blade. Avoid using abrasive cutting wheels which can burn off the zinc coating at the edge, compromising local corrosion resistance.
Welding
Welding galvanized steel is possible but requires special procedures. The zinc coating must be ground away from the weld zone to prevent fume inhalation and ensure a strong weld. Proper ventilation and respiratory protection are mandatory. Mechanical fasteners are the standard method for installation.
Finishing
The galvanized finish is the primary surface treatment. Panels can be painted, but require a specific primer designed for galvanized surfaces to ensure proper adhesion. The zinc coating provides excellent corrosion protection without additional finishing.
Related Products
Frequently Asked Questions
Q: What does the gauge number mean for roofing panels?
A: The gauge indicates the thickness of the steel sheet. A lower gauge number means a thicker, more durable panel. For example, 24 gauge (approx. 0.024") is thicker and stronger than 26 gauge (approx. 0.018").
Q: Can I weld galvanized steel roofing?
A: While possible, it's not recommended without proper safety precautions and preparation. The zinc coating must be removed before welding to avoid hazardous fumes and ensure weld integrity. Mechanical fasteners are the standard installation method.
Q: How long does galvanized steel roofing last?
A: Service life depends on the environment and coating thickness, but typically ranges from 20 to 50 years. The zinc coating provides a sacrificial barrier against corrosion, gradually weathering away over time.
Stock & Custom Sizes
Available thicknesses: 24 gauge and 26 gauge. Standard sheets: 36" × 96", 36" × 120", 36" × 144", 42" × 120", and 42" × 144". Custom size available.
Same-day cutting and Los Angeles pickup available.
View Sizes & PricingNeed Galvanized Steel Roofing and Sidings? Contact Bobco Metals for availability and Los Angeles pickup.
Request a Quote Ask an Expert