Top 7 Myths about Metal Roofing: Separating Fact from Fiction - The Ultimate Guide to Modern Steel Roofing

When homeowners hear "metal roof," outdated misconceptions often come to mind: noisy rainfall, rust problems, or industrial aesthetics etc. But modern metal roofing technology—particularly GERARD stone-coated steel roofing—has revolutionized the industry, debunking these myths with superior performance and stunning designs.

If you’re considering a roof replacement or new construction project, it’s time to discover the truth about lightweight GERARD metal roofing systems and why they’re becoming the preferred choice for discerning homeowners worldwide.

The Top 7 Metal Roofing Myths Debunked

Table of Contents

Myth 1: Metal Roofs Are Noisy During Rainstorms

Reality: Modern metal roofs are nearly as quiet as traditional roofing materials for instance concrete roof as seen on the graph below measuring noise level of different roofing materials.

This persistent myth stems from images of old corrugated metal barns, but modern metal roofing couldn’t be more different. The stone-coated steel tiles feature multiple sound-dampening layers, including:

Stone granule coating that disrupts sound wave reverberation

Multi-layer construction some even include acoustic membranes

Professional overlapping installation over underlay, battens, and insulation

The result? Modern stonecoated metal roofs are much quieter than expected.

Myth 2: Metal Roofs Costs More

Reality: It is the more economical choice in the long run.

At first glance, stone-coated metal roofs may seem more expensive than other options. But that’s only if you look at the upfront cost. When you consider lifetime performance, durability, and added property value, a GERARD roof often proves to be the more economical choice in the long run.

Thanks to its corrosion-resistant steel core and tough stone-coated finish, a GERARD roof can last 70 years or more—far outliving many traditional materials. That long lifespan means fewer replacements, lower maintenance costs, and a higher return on investment. In fact, a high-quality metal roof can boost a home’s resale value by up to 6%, according to industry estimates.

With a proven track record across Europe and beyond, GERARD delivers the look homeowners love with the strength professionals trust.

Myth 3: Steel Roofing Rusts and Corrodes Quickly

Reality: GERARD’s advanced coating technology provides corrosion-resistance.

Modern GERARD roofing uses sophisticated multi-layer protection that makes rust virtually impossible. What gives GERARD its unbeatable durability against corrosion is the advanced aluminium-zinc protective coating on the steel core — made up of 55% aluminium, 43.4% zinc, and 1.6% silicon. This high-performance alloy makes our roof tiles lightweight, exceptionally strong, and highly resistant to corrosion.

GERARD was among the first to adopt this coating technology in steel roof tiles, setting us apart in both innovation and quality. The aluminium forms a tough barrier against the elements, while the zinc offers active protection by preventing corrosion at any exposed edges — a combination that delivers outstanding long-term performance. Compared to traditional galvanised or other zinc-aluminium (95% zinc, 5% aluminium) coatings, GERARD’s aluminium-zinc layer performs far better across a wide range of climates, ensuring a longer-lasting and more reliable roof.

The layers of protection:

High-grade galvanized steel base material

Metallic alloy coating (55% aluminum, 43.4% zinc, 1.6% silicon)

Stone-coated finish providing additional weather protection

Myth 4: Metal Roofs Make Homes Hotter in Summer

Reality: GERARD roofing provides superior energy efficiency and cooling.

Contrary to popular belief, GERARD metal roofs are among the most energy-efficient roofing materials available. Here’s why:

Cool-down effect: Similar to a car hood, metal cools rapidly once heat source is removed

Temperature regulation: Works seamlessly with ventilation and insulation systems

Solar reflectivity: GERARD roofs reflect much of the sun’s energy away from your home

Heat absorption prevention: Unlike some other roofing materials that absorb heat like a sponge, metal reflects thermal energy

For enhanced energy efficiency, GERARD roofing can integrate with solar tile systems to generate clean energy while maintaining optimal thermal performance.

Myth 5: Metal Roofing Looks Industrial and Unappealing

Reality: GERARD offers authentic stylish aesthetics with modern performance.

GERARD Eleganta – the stonecoated metal roof for our age

Gone are the days of plain metal sheets on industrial buildings. The natural stone-coated GERARD roofing profiles are specifically designed to replicate in an authentic and attractive way:

Natural slate, shake or shingle textures with authentic stone finishes
Classic clay tile appearances with dimensional profiles
Traditional roofing styles suitable for any architectural design
Curb appeal enhancement with minimalist modern profiles that complements both modern and classic homes

Whether you’re renovating a heritage property or building contemporary, GERARD provides the visual appeal of traditional materials with superior durability.

Myth 6: Metal Roofs Do Not Last Long

Reality: A GERARD metal roof is built to withstand half century of harsh weather, backed by a 50-year weatherproof warranty that outlasts most traditional roofing materials..

Some people still believe metal roofs are a short-term solution, but modern technology has changed the game completely. GERARD roofs are made from a corrosion-resistant metal alloy, protected by a tough stone coating. This combination shields your home from outside threats like hailstorms and high winds, as well as internal risks like rust and degradation.

Thanks to our unique 8-point horizontal installation system, a GERARD roof stays firmly in place even in hurricanes with wind speeds of up to 160 km/h – making it one of the safest roofing choices in extreme weather. That’s why we confidently offer a market-leading 50-year weatherproof warranty – a guarantee that many producers of traditional roofing materials simply can’t match.

Durability isn’t just a promise with GERARD – it’s proven performance.

Myth 7: Metal Roofs Attract Lightning Strikes

Reality: Lightning strikes do not depend on the roofing material but on the location and height of a building.

If a building is the highest object then the likely target will be the building’s highest point such as chimney, television aerial or lightning conductor. Passage of the lightning to the ground will follow the shortest conducting path which could be a proper lightning conductor, a wet wall or the edge of the building.

In New Zealand, where the prototype of GERARD stonecoated metal roof was invented in 1957, more than fifty per cent of houses have metal roofs while there are also a significant number of metal roofs in the Florida Keys. Both locations are subject to frequent and violent electrical storms and yet there is no evidence — in either place — of more lightning strikes on metal roofs than on any other roof type.

Pros and Cons of Metal Roofs vs Traditional Roofing Materials

PROS	CONS
Durable and stormproof	More expensive upfront cost
Lightweight	Some still prefer the look of traditional but heavier roof tiles
Wide range of profiles and colours of natural stonecoating	Concrete and clay tiles may be slightly quieter during rain

Conclusion: Don’t Let Outdated Myths Limit Your Roofing Options

Modern metal roofing by GERARD has evolved far beyond old misconceptions. With beautiful profiles, wide colour range of natural stone coating, exceptional durability, energy efficiency, and future-ready features, GERARD represents the pinnacle of residential roofing technology.

Ready to discover why thousands of homeowners are choosing GERARD lightweight steel roofing worldwide? Contact a certified GERARD installer today for advice and a personalized quote that could transform your home’s protection, efficiency, and curb appeal for decades to come.

SUMMARY: Why Choose GERARD Metal Roofing?

GERARD has been perfecting stone-coated steel roofing technology for decades, delivering products that combine:

Industrial strength with residential beauty

Traditional aesthetics with modern performance

Environmental sustainability with recyclable materials

Superios weather resistance proven in harsh global climates

GERARD Is A Popular Roofing Choice Around The World

To meet the global demand for metal roofing the parentcompany of GERARD built the world’s largest factory for this featherlight and ultradurable roofing solution. It also proves that many homeowners know what unique benefits light, durable and beautiful stonecoated metal roofs can offer: https://www.youtube.com/watch?v=EZr6OTBTtNM