What Are Metal Roofs Made Of? A Homeowner’s Guide

The Most Common Metal Used in Residential Roofing: Steel

When most contractors talk about metal roofing, they’re talking about steel.

Steel is the most widely used residential metal roofing material because it offers a strong balance of:

  • Durability
  • Impact resistance
  • Cost efficiency
  • Performance in harsh weather

It’s also why steel roofs are often highlighted in our guides like
The Benefits of Steel Roofing.

Why Steel Works Well in Michigan

Steel roofs perform especially well in Michigan because they:

  • Handle snow loads effectively
  • Resist wind damage
  • Shed snow instead of holding moisture
  • Hold up well during freeze-thaw cycles

In fact, snow and structural performance are common homeowner concerns, which is why topics like Michigan Snow Loads: Is Your Roof Strong Enough? often come up alongside metal roofing conversations.

To prevent rust, steel roofing panels are always coated. Two common coatings homeowners may hear about are:

  • Galvanized steel
  • Galvalume steel

From a homeowner’s perspective, the takeaway is simple: the coating protects the steel, and coating quality plays a major role in how long the roof lasts.

Aluminum: Lighter and Rust-Resistant, but Less Common

Aluminum is another metal used in residential roofing, though it’s far less common than steel.

Aluminum is:

  • Naturally corrosion-resistant
  • Lightweight
  • More expensive than steel
  • Softer, meaning it can dent more easily

Because Michigan homes are more affected by snow load, wind, and impact than salt exposure, steel is usually the preferred option. Aluminum tends to appear more often in specialty or coastal applications.

Copper and Zinc: Premium and Specialty Options

Some homeowners ask about copper or zinc roofing.

These materials:

  • Are significantly more expensive
  • Are usually used for architectural accents
  • Require specialized installation

They’re worth understanding but are rarely the right choice for most residential roofs.

Why Coatings Matter More Than the Metal Itself

Two metal roofs can be made of the same steel and age very differently.

The reason is almost always the coating and finish.

Coatings help:

  • Prevent corrosion
  • Protect against UV exposure
  • Reduce chalking and fading
  • Extend roof lifespan

This is why homeowners researching longevity often also read How Long Do Steel Roofs Last? when comparing metal roofing options.

Painted Finishes: What Homeowners Usually Ask About

Homeowners often wonder:

  • Will the color fade?
  • Is the roof painted on-site or at the factory?
  • Why do some metal roofs look worn earlier than expected?

Residential metal roofs use factory-applied finishes, not field paint. These finishes are baked on and designed to withstand years of sun, weather, and temperature changes.

The quality of the finish affects:

  • Color retention
  • Surface wear
  • Long-term appearance

This is one reason metal roofs shouldn’t be compared on price alone.

What’s Under a Metal Roof Matters Just as Much

One of the most overlooked parts of metal roofing is what’s under the panels.

Beneath the metal, a properly designed system includes:

  • Solid roof decking
  • High-quality underlayment
  • Proper ventilation
  • Effective insulation

In cold climates, this directly affects condensation and moisture control. Homeowners dealing with moisture issues often find answers in guides like Condensation in Attics: Causes, Signs, and Solutions and How to Check If Roof Insulation Is Working.

How Metal Roofs Are Attached: A Simple Explanation

Metal roofs aren’t all attached the same way.

Some systems use:

  • Exposed fasteners, which are visible on the surface
  • Concealed clip systems, where fasteners are hidden

Attachment design affects how the roof handles temperature changes and weather stress. Poor attachment choices often lead to leaks or premature wear, especially during winter conditions.

How Metal Roofs Perform in Michigan Weather

When designed correctly, metal roofs handle Michigan conditions very well.

They:

  • Shed snow efficiently
  • Reduce moisture buildup when ventilation is correct
  • Hold up against wind and storms
  • Perform well during freeze-thaw cycles

Many winter-related concerns homeowners have are addressed in seasonal guides like Will Your Roof Survive the Winter? And When Snow Buildup Is Not Okay for Your House.

Questions Homeowners Should Ask Before Choosing Metal

Instead of focusing only on the metal type, homeowners should ask:

  • What coating and finish is being used?
  • How will ventilation and insulation be handled?
  • What attachment system is planned?
  • How does this system perform in winter conditions?
  • How does this roof integrate with gutters and flashing?

These questions lead to better outcomes than simply choosing a metal.

Metal Roofing Is About the System, Not Just the Metal

A metal roof isn’t just steel, aluminum, or panels.
It’s a carefully designed system where materials, coatings, and installation all work together.

When homeowners understand what metal roofs are actually made of — and what truly affects performance — they’re far better equipped to make decisions that last.

Thinking About a Metal Roof for Your Home?

Understanding what metal roofs are made of is a great first step. The next is making sure the entire roofing system: materials, insulation, ventilation, and installation, is right for your home and Michigan’s weather.

A professional assessment can help you:

  • Determine whether metal roofing makes sense for your home
  • Understand what type of system would perform best
  • Catch issues early before they turn into costly problems

If you’d like expert guidance tailored to your roof, start with a conversation.

👉 Schedule your consultation with Weather Vane Roofing here:
https://weathervaneroofing.com/contact-us/

Making informed decisions now helps ensure your roof performs the way it should for years to come.

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