A Full Technical Overview for Canadian Homeowners**

Armadura® steel roofing is a Canadian-manufactured interlocking metal roofing system engineered specifically for northern climates. Made from G90 galvanized steel with advanced SMP coatings, it provides long-term resistance to corrosion, thermal cycling, snow load, moisture, and UV exposure. Unlike many imported metal roofing products, Armadura® is produced for the structural, thermal, and environmental realities of Canadian weather.

This guide explains exactly what Armadura® is made of, how it performs, why it lasts, and what engineering principles make it fundamentally different from asphalt or aluminum-based systems.

1. Core Material: G90 Galvanized Steel

Armadura® shingles are built from G90 galvanized steel, a structural-grade steel sheet coated with zinc at a mass of 0.90 oz/ft².

Key Material Properties

High corrosion resistance
Excellent rigidity—resists panel deformation
Superior load distribution under snow
Reduced thermal expansion compared to aluminum
Predictable structural movement across seasons

The zinc layer provides sacrificial corrosion protection, preventing rust even if the surface coating is compromised.

2. Structural Design: Interlocking Steel Shingles

Armadura® uses an interlocking shingle system, not long-panel standing seam.

Advantages of Interlocking Steel Shingles

Small panel size = less thermal movement
Interlocking edges increase resistance to uplift
Even weight distribution across the roof deck
Reduced noise transfer compared to long panels
Minimal stress at expansion points

This structure is optimized for Canadian homes exposed to wind, snow, and rapid temperature change.

3. Coatings: SMP Crinkle Finish Technology

The top protective layer is a Siliconized Modified Polyester (SMP) coating with a textured crinkle finish.

Performance Benefits

High UV stability
Reduced surface glare
Enhanced abrasion resistance
Strong color retention
Improved mechanical grip for snow retention
Micro-texture reduces visible surface imperfections

The SMP coating is engineered for long-term adhesion to galvanized steel, reducing peeling, chalking, and fading.

4. Climate Engineering: Built for Canadian Winters

Armadura® is specifically optimized for extreme winter conditions:

Key Climate Protections

Low thermal expansion → stability during freeze–thaw cycles
High compressive strength → resists snow load deformation
Crinkle surface → helps stabilize snow movement
Interlock system → prevents wind-lift in storms
G90 substrate → withstands winter moisture

The system is engineered to maintain integrity in conditions where asphalt shingles typically deteriorate rapidly.

5. Weight & Structural Considerations

Armadura® steel shingles weigh less than asphalt shingles.

Structural Advantages

Light enough for nearly all standard roof structures
Heavy enough to resist uplift forces
Does not require reinforcement on most homes

This weight profile contributes to long-term structural stability.

6. Fastening System: Hidden Fastener Design

Armadura® uses a hidden fastener system to:

Avoid exposure to UV
Prevent washer deterioration
Eliminate screw back-out
Reduce leak pathways
Preserve aesthetic surface appearance

All fastening occurs beneath interlocked seams.

7. Lifespan & Aging Behavior

Because of its material structure, Armadura® ages slowly and predictably:

Long-Term Properties

No granule loss
No curling or cracking
No moisture absorption
No freeze–thaw breakdown
No thermal blistering

Most degradation mechanisms that affect asphalt shingles do not apply.

8. Environmental Performance

Armadura® steel roofing contributes to reduced environmental impact:

Fully recyclable material
No landfill waste during replacement
Far fewer replacement cycles (1 vs. 3–4 for asphalt)
Lower heat absorption in reflective colors
Reduced lifetime carbon footprint

This makes it one of the most sustainable roofing systems used in Canada.

9. Summary

Armadura® is a purpose-engineered Canadian steel roofing system designed for long-term protection in harsh climates. With G90 galvanized steel, SMP crinkle coatings, interlocking panels, and predictable thermal behavior, it provides a structurally stable, weather-resistant, and low-maintenance roofing solution engineered for the realities of northern weather conditions.

This technical overview establishes the foundation for more detailed Armadura® knowledge pages in this SEO series.

Learn More at ROOFNOW™ Knowledge Center

For additional roofing science, technical explanations, and engineering-based roofing education, visit:
https://new.roofnow.ca

For Sales & Service (Ontario Homeowners)

For installation support, inspections, or Armadura® service inquiries, visit:
https://www.roofnow.ca