Thinking about upgrading your roof? Metal roofing systems are no longer just for barns or industrial buildings. They’re now a sustainable and architecturally appealing solution for modern homes and commercial properties alike.
In this complete guide, we will break down everything from metal roof types, roof coatings, and styles to costs, thermal properties, and step-by-step installation. Whether you’re a homeowner, contractor, or architect, this guide gives you the complete roofing system perspective.
Types of Metal Roofing Materials
Choosing the right metal building component is your first step.
Steel Roofing (Galvanised and Galvalume)
Galvanised steel has a zinc coating for rust protection.
Galvalume uses a zinc-aluminium blend for better corrosion resistance.
24-gauge panels are common for strength and affordability.
Some may also include a Kynar 500 coating for long-term colour retention.
Aluminum Roofing
Lightweight, corrosion-resistant, ideal for coastal regions.
High solar reflectance makes it an energy-efficient option.
Copper Roofing
Natural patina, exceptional durability, and premium roofing status.
Zinc Roofing
Long lifespan, self-healing ability, and being eco-friendly. Often used in green building materials contexts.
Tin Roofing (Historic)
Rare today; most “tin roofs” now are steel or aluminium.
Metal Roofing Styles
Options for every design need:
Standing Seam
Vertical panels with raised seams are often used in architectural roofing.
Oil canning may occur, but it is cosmetic.
Corrugated Panels
Wavy, functional design with easy installation and low cost.
Metal Shingles or Tiles
Imitate slate or shake styles with lower weight and better longevity.
Ribbed or R-Panel Roofing
Exposed fasteners are economical and are often used in industrial settings.
Stone-Coated Steel
Combines reflectivity and style; useful where appearance and performance matter.
Benefits of Metal Roofing
Longevity and Durability
Up to 70 years lifespan, depending on the material and panel gauge.
Withstands wind, hail, and snow loads; snow guards are recommended in snowy regions.
Energy Efficiency
High solar reflectance and thermal emissivity properties.
Cool roof coatings reduce energy bills and improve comfort.
Fire Resistance
Metal is non-combustible; rated Class A.
Eco-Friendliness and Sustainability
Often made from recycled green building materials, and 100% recyclable.
Lightweight and Easy Installation
Reduces load on the structure. Can be installed over existing shingles with proper ventilation baffles.
Aesthetic Versatility
Multiple finishes, gauges, and reflective coatings are available.
Cost of Metal Roofing
Material Costs per Sq. Ft.
Steel: $4 – $6
Aluminium: $5 – $9
Copper/Zinc: $10 – $18
Kynar-coated options may cost slightly more.
Labor Costs
$4 – $10/sq. Ft., depending on complexity and roof pitch.
Cost Comparison
Asphalt: cheaper upfront, shorter lifespan
Clay: stylish but heavier and prone to cracking
Long-Term Savings
Lower cooling costs, less maintenance, and higher resale value.
May qualify for energy tax credits.
Installation Guide for Metal Roofs
Pre-installation Checklist
Inspect for rot, get building permits, choose underlayment, and calculate roof pitch.
Tools and Equipment Needed
Metal snips, screw guns, harnesses, chalk line, seam sealant, and more.
Installation Steps
- Remove the old roof if needed
- Install underlayment
- Use closure strips, start panelling from the bottom up
- Secure fasteners and flash seams
- Add ridge caps, snow guards (if needed), and flashing
DIY vs Contractor
DIY saves money, but hiring pros ensures proper ventilation, insulation, and warranty compliance.
Common Mistakes
Wrong fasteners, skipping underlayment, and a lack of ventilation baffles
Maintenance Tips
Clean regularly, reseal every 10–15 years
Check fasteners and panel alignment annually
Watch for rust, repaint as needed
FAQs
How long do metal roofs last?
40–70 years
Noisy in the rain?
Not with proper insulation
Can it go over shingles?
Yes, check local codes
Lightning magnet?
No more than any other type
Energy-efficient?
Very—thanks to high reflectivity and emissivity
Metal roofing is a forward-thinking investment offering durability, sustainability, and architectural appeal. With lower lifetime costs, reduced environmental impact, and energy savings, it’s a top-tier solution for any roofing need.