Rusteel Plus™ offers contractors a weathering steel product that develops a protective patina naturally, eliminating painting requirements while meeting ASTM A606 Type 4 standards for superior corrosion resistance. The 22-gauge steel contains copper, nickel, and chromium alloys that create atmospheric corrosion resistance without any metallic coating or paint finish.
For Montana’s dry climate, this unpainted steel system provides 40-60+ year performance through natural oxidation rather than traditional coatings. The trade-off: careful installation requirements and acceptance of rust runoff that can stain adjacent surfaces.
No-Maintenance Weathering Steel Specifications
The product arrives as bare 22-gauge steel meeting ASTM A606 Type 4 specification, with copper, nickel, and chromium alloys providing the corrosion resistance. Unlike galvanized or painted panels that rely on surface coatings, Rusteel Plus develops its protection through controlled oxidation.
| Specification | Value |
|---|---|
| Material | 22 gauge steel |
| Standard | ASTM A606 Type 4 |
| Alloy Content | Copper, Nickel, Chromium |
| Coating | None (unpainted, no metallic coating) |
| Surface Finish | Natural weathered orange-brown oxide (patina) |
| Warranty | No warranty |
The material does not arrive pre-rusted; patina develops with exposure to weather. Superior corrosion resistance compared to cold-rolled steel comes from the alloy content, not from any applied coating. Contractors report 40-60 years or more of service life.
Custom lengths from 1’ to 30’ (longer available on request) allow contractors to minimize field joints. The material works with Taylor’s standard panel profiles including MS200 Roof Panels, Contour Series Wall Panels, and Classic 7/8” Corrugated Wall Panels.
Installation Requirements and Fastener Compatibility
Rusteel Plus demands specific installation practices that differ from coated panels. Use painted stainless steel fasteners — standard galvanized fasteners will create galvanic corrosion at contact points. Maintain 3:12 minimum pitch when installed with butyl sealant (typical for some profiles like MS200).
Critical installation requirements:
- Avoid contact with soil and dissimilar metals
- Prevent rust runoff from staining surrounding areas like decks or concrete (use gutters or separation)
- Do not leave nested panels exposed to weather before installation to avoid undesirable finish
Designer should be aware of rust runoff on decks and concrete without gutter protection or separation — this isn’t a defect, it’s inherent to the product. Contractors need to plan drainage paths and protect adjacent surfaces during the initial weathering period.
Montana Climate Suitability
Best suited for dryer, less humid environments. Not recommended for marine environments. Montana’s continental climate — dry air, low humidity, minimal salt exposure — creates ideal conditions for weathering steel performance.
The natural atmospheric corrosion resistance works through controlled oxidation. In Montana’s climate, the steel develops its protective patina steadily without the accelerated corrosion seen in coastal environments. Historic restoration projects represent a key application where authentic weathered appearance matters.
Unlike painted or galvanized products (Zincalume/Galvanized), Rusteel Plus has no finish warranty and relies on natural oxidation for protection. This makes environmental suitability critical — the product performs exactly as intended in Montana’s dry climate but would fail prematurely near salt water.
The Verdict
Rusteel Plus delivers authentic weathering steel performance for contractors who understand its requirements. The ASTM A606 Type 4 specification with copper, nickel, and chromium alloys provides genuine long-term corrosion resistance through natural patina development. At 22 gauge with custom lengths available, it handles Montana’s freeze-thaw cycles and UV exposure without paint maintenance.
The product shines for projects where authentic weathered appearance matters — historic restorations, architectural features, and buildings where painted rust-look products appear fake. The installation demands (stainless fasteners, rust runoff management, dissimilar metal isolation) add complexity but ensure decades of performance.
Not for everyone. Homeowners expecting warranty coverage or pristine adjacent surfaces should choose coated products. But for projects where genuine weathering steel makes sense — dry climates, controlled runoff, authentic appearance requirements — Rusteel Plus delivers exactly what the specs promise.
Frequently Asked Questions
Q: Does Taylor Metal Products’ Rusteel Plus come with a warranty like painted metal panels?
No, Rusteel Plus (A606) has no warranty because it’s an unpainted product without a metallic coating. Unlike Taylor Metal’s coated products that carry finish or perforation warranties, Rusteel Plus relies on natural oxidation for protection rather than applied coatings.
Q: What fasteners should I use with Rusteel Plus A606 panels?
Taylor Metal Products requires painted stainless steel fasteners for Rusteel Plus installation. Standard galvanized fasteners will cause galvanic corrosion at contact points with the copper, nickel, and chromium alloys in the 22-gauge steel.
Q: Will Rusteel Plus stain my deck or concrete?
Yes, Taylor Metal’s Rusteel Plus will produce rust runoff that can stain decks and concrete surfaces. The company specifically warns designers to plan for gutters or separation to prevent staining, as this is inherent to weathering steel products.
Q: What’s the minimum roof pitch for Taylor Metal’s Rusteel Plus panels?
Rusteel Plus requires a 3:12 minimum pitch when installed with butyl sealant (typical for profiles like the MS200). This pitch requirement ensures proper water drainage as the natural patina develops.
Q: How does Rusteel Plus compare to Taylor Metal’s painted or galvanized options?
Rusteel Plus (A606) offers superior corrosion resistance compared to cold-rolled steel through its copper, nickel, and chromium alloy content, but unlike Taylor’s Zincalume or painted products, it has no finish warranty. The 22-gauge weathering steel develops a natural orange-brown patina over time rather than maintaining a consistent color.
Q: Can I use Rusteel Plus near the coast or in humid climates?
No, Taylor Metal specifically states Rusteel Plus is best suited for dryer, less humid environments and is not recommended for marine environments. The ASTM A606 Type 4 weathering steel performs best in continental climates where the protective patina can develop properly.
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