Why Galvanized Steel Performs Better in Pacific Northwest Weather
Galvanization Explained – Why Zinc Coated Steel Performs Better in Pacific Northwest Weather
Many customers ask: “What exactly is galvanization, why does it matter, and what makes Valley Outdoor Supply steel stronger and longer lasting?” This guide explains how zinc coated steel protects against rust, why it performs so well in the PNW climate, and how our material standards exceed typical big box offerings.
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↑✅ What Is Galvanization
Galvanization is the process of applying a protective layer of zinc to steel. Zinc naturally resists corrosion and, more importantly, acts as a sacrificial shield for the underlying metal.
- How it works: zinc corrodes slowly, protecting the steel from moisture and oxygen.
- Even if scratched: zinc can still protect the exposed area through galvanic action.
- Why it matters in the PNW: frequent moisture + storms accelerate rust on bare steel.
⭐ Why Valley Outdoor Supply Zinc Coated Steel Is Superior
Our steel is sourced for Pacific Northwest durability, not generic light-duty supply. We focus on consistent coating performance and reliable base steel for outdoor handling and longevity.
- Thicker / more consistent coatings than typical retail panels
- Stronger base steel for better rigidity and handling
- Reliable batch quality (not mixed suppliers)
- Selected for year-round moisture, wind-driven rain, and wet ground conditions
The result: better corrosion resistance, longer service life, and noticeably stronger panels.
✅ G115 Galvanized Steel (24 Gauge)
Our heavy duty 24 gauge panels use G115 hot dip galvanizing—one of the thickest commercial zinc coatings available.
- G115 = approx. 1.15 oz zinc per square foot
- Nearly double the zinc of G60 panels common at big box stores
- Excellent for barns, roofing, livestock structures, and high wear sites
Best for: long-term durability where rust protection is critical.
✅ Aluminum-Zinc Coated Steel (29 Gauge)
Aluminum-zinc alloy coatings (often referred to as “galvalume-type”) combine aluminum, zinc, and silicon for outstanding corrosion resistance.
- Excellent rust protection for residential & garden projects
- Heat-reflective surface can run cooler in sun
- Lightweight and cost-effective
- Great for sheds, siding, garden beds, and carports
📊 Galvanized vs Aluminum-Zinc — Which Should You Choose?
| Feature | G115 Galvanized (24 Gauge) | Aluminum-Zinc (29 Gauge) |
|---|---|---|
| Corrosion Resistance | High — excellent for rural and wet exposure | Very High — great for rain and coastal air |
| Strength / Thickness | Heavy duty 24 gauge | Lightweight 29 gauge |
| Best Applications | Roofs, barns, fencing, structures with heavy wear | Garden beds, sheds, siding, small projects |
| Initial Cost | Higher | Lower |
✔ Choose G115 galvanized for harsh weather, livestock, barns, and roofing.
✔ Choose aluminum-zinc for residential projects, garden beds, and siding.
⚖ Legal and Safety Notes
- Panels are commonly used in agricultural and garden projects but are not certified as food grade.
- Buyer is responsible for verifying local building codes and installation practices.
- No implied warranties for specific lifespan or use conditions.
- Trademark note: “Galvalume®” is a registered trademark of BIEC International Inc. Valley Outdoor Supply is not affiliated with or endorsed by BIEC. We offer aluminum-zinc alloy coated steel commonly referred to as “galvalume-type”.