Metal roofing and asphalt shingles represent the two most popular roofing options for Australian homeowners today. Metal roofing typically consists of steel or aluminium panels that interlock or overlap during installation, creating a durable, weather-resistant barrier. Asphalt shingles, on the other hand, are individual rectangular pieces made from fibreglass mat topped with asphalt and mineral granules, installed in overlapping rows across the roof surface.
The installation methods for these materials differ significantly. Metal roofing installation involves securing large panels with specialised fasteners, often requiring professional expertise to ensure proper sealing at joints and edges. Asphalt shingles are installed by nailing individual shingles in overlapping patterns, starting from the bottom edge and working upward to create multiple layers of protection.
Aesthetically, metal roofing offers a sleek, contemporary appearance with clean lines and a distinctive profile that many homeowners find appealing for modern architectural styles. Asphalt shingles provide a more traditional, textured look that blends well with classic home designs and neighbourhoods with established visual themes.
The life expectancy of metal roofing typically ranges from 40-70 years, depending on the specific material and quality of installation. Metal roofs resist degradation from UV rays, moisture, and temperature fluctuations much better than alternative materials. Asphalt shingles generally last 15-30 years, with degradation accelerated by intense sun exposure, severe weather events, and poor ventilation in the roof space.
Maintenance requirements also differ substantially. Metal roofing needs minimal maintenance—perhaps an annual inspection and occasional washing to remove debris and check for loose fasteners. Asphalt shingles require more frequent attention, including replacing damaged or missing shingles, clearing debris from valleys, and treating moss or algae growth every few years.
What is Metal Roofing?
Metal roofing is a comprehensive roofing system that uses metal sheets or panels as the primary weather-resistant layer on a building's roof structure. The system includes not just the visible metal material but also the underlying framework, insulation layers, and specialised flashings that work together to protect the building.
The most common materials used in Australian metal roofing are Colorbond steel, Zincalume steel, and aluminium. Colorbond represents a premium option with its baked-on colour finish that resists fading and chipping. Zincalume offers excellent corrosion resistance through its aluminium-zinc alloy coating. Aluminium provides superior performance in coastal areas where salt corrosion is a concern.
The structure of metal roofing systems is designed for maximum durability and weather resistance. The panels typically feature raised ribs or seams that channel water off the roof while creating strong lines that enhance the architectural appearance. The fastening systems used in modern metal roofing are engineered to allow for thermal expansion and contraction while maintaining watertight integrity through concealed clips or direct fixing methods with specialised rubber washers.
What are the Pros and Cons of Metal Roofing?
Metal roofing systems offer a distinctive set of advantages and disadvantages that homeowners should carefully weigh before making their roofing choice. Metal roofing is made of durable metal materials shaped into panels or shingles, creating a weather-tight barrier that protects the structure beneath.
Pros of Metal Roofing:
- Metal roofing's durability is exceptional, with most systems lasting 40-70 years with minimal deterioration. The material withstands extreme weather events including hailstorms, high winds, and heavy snow loads without compromising its structural integrity.
- Fire resistance is another significant advantage of metal roofing. The non-combustible nature of metal provides enhanced safety for homes in bushfire-prone areas. Metal roofs typically carry the highest fire rating available for roofing materials.
- Energy efficiency is a standout benefit of metal roofing systems. The reflective surface of metal roofing redirects solar heat away from the building, reducing cooling costs during hot Australian summers by up to 25%. This reflective quality helps maintain more comfortable indoor temperatures year-round.
- Recyclability represents an environmental advantage of metal roofing. At the end of its service life, metal roofing is 100% recyclable, significantly reducing landfill waste compared to asphalt shingles. Most metal roofing already contains a high percentage of recycled material.
Cons of Metal Roofing:
- Higher upfront cost is the primary disadvantage of metal roofing. The initial investment for metal roofing typically runs 2-3 times higher than asphalt shingles. This increased cost includes both materials and specialised installation labour.
- Noise during rainfall can be an issue with improperly installed metal roofing. Without proper insulation and underlayment, metal roofs may create more audible noise during heavy rain or hail. Modern installation techniques with solid decking and insulation largely mitigate this problem.
- Potential denting from severe hail or falling branches affects some metal roofing types, particularly aluminium and copper. While structural integrity remains intact, aesthetic damage may occur from impacts. Steel roofing offers better resistance to denting than softer metal options.
What are Asphalt Shingles?
Asphalt shingle roofing consists of individual overlapping elements made from a combination of materials designed to protect against weather while providing an attractive finish. These shingles create multiple layers of protection through their overlapping installation pattern.
The base materials in asphalt shingles vary by type. Fibreglass mat serves as the foundation for most modern asphalt shingles, offering improved fire resistance and dimensional stability. This fibreglass core is saturated with asphalt to create water resistance. Older organic felt-based shingles used cellulose fibres instead of fibreglass but have become less common due to their shorter lifespan and lower fire resistance.
The coating and granule finish distinguish asphalt shingles visually and functionally. The outer layer consists of mineral granules embedded in asphalt coating. These granules serve multiple purposes: they provide colour options, reflect UV rays to extend shingle life, and create texture that enhances visual appeal. The granules are carefully applied during manufacturing to ensure even distribution and maximum protective qualities.
What are the Pros and Cons of Asphalt Shingles?
Asphalt shingles are rectangular roofing materials made from a fibreglass or organic mat base coated with asphalt and mineral granules. These individual pieces overlap when installed to create a protective barrier against weather elements while providing an attractive finish to homes.
Pros of Asphalt Shingles:
- Lower cost is the most appealing advantage of asphalt shingles. The materials are significantly less expensive than metal roofing options, with typical installation costs running 30-50% lower than comparable metal roof installations. This affordability makes asphalt shingles accessible to homeowners with various budget constraints.
- Easier installation processes make asphalt shingles popular with both professional roofers and DIY enthusiasts. The installation requires fewer specialised tools and techniques compared to metal roofing. The simpler installation method translates to lower labour costs and faster completion times for roofing projects.
- Variety in colour and styles gives homeowners extensive aesthetic options with asphalt shingles. The market offers architectural shingles that mimic slate or wood shake appearances, three-tab shingles with classic patterns, and numerous colour variations to complement any home design. This versatility allows asphalt shingles to enhance various architectural styles.
Cons of Asphalt Shingles:
- Shorter lifespan represents a significant drawback of asphalt shingles. Most standard shingles last 15-30 years, less than half the expected life of quality metal roofing. This shorter durability means more frequent replacement and higher long-term costs despite the lower initial investment.
- Lower weather resistance makes asphalt shingles more vulnerable to damage from extreme conditions. Strong winds can lift or tear shingles, while hail and falling debris might crack or dislodge the material. The granule surface wears down over time, reducing the shingles' ability to protect against UV radiation and water infiltration.
- Non-recyclable composition creates environmental concerns with asphalt shingles. When replaced, old shingles typically end up in landfills, contributing to construction waste problems. The petroleum-based materials in asphalt shingles do not break down easily and contain compounds that may leach into soil over time.
How to Choose Between Metal Roofing and Asphalt Shingles
Choosing the right roofing material involves weighing several core comparison factors that affect both immediate satisfaction and long-term performance.
Cost considerations include both upfront expenses and lifetime value. Metal roofing typically costs $10,000-25,000 for an average home, while asphalt shingle installation ranges from $5,000-12,000. However, when factoring in replacement frequency, metal often proves more economical over periods exceeding 30 years.
Lifespan differences significantly impact value calculations. Metal roofing's 40-70 year durability often spans the entire ownership period of a home, while asphalt shingles may require replacement 2-3 times in the same timeframe. This replacement frequency adds both cost and inconvenience to the asphalt option.
Climate suitability varies substantially between these materials. Metal roofing excels in areas with extreme weather conditions including intense sun exposure, heavy rainfall, snow accumulation, and high winds. Asphalt shingles perform adequately in moderate climates but degrade faster in regions with temperature extremes or high humidity.
Weight factors affect structural requirements and installation costs. Metal roofing weighs 50-150 pounds per square (100 square feet), while asphalt shingles weigh 250-450 pounds per square. This weight difference means metal roofing puts less stress on the building structure, potentially reducing the need for additional support in new construction.
Metal roofing is better for:
Long-term investment properties where owners plan to remain for decades and want to eliminate future re-roofing concerns. The superior lifespan makes metal the financially sound choice for extended ownership periods.
High-wind areas such as coastal regions and storm-prone locations benefit from metal roofing's superior wind resistance. Properly installed metal roofs withstand winds exceeding 140 km/h without damage.
Energy-conscious homeowners see greater benefits from metal roofing's reflective properties. The material's ability to reduce cooling costs by 15-25% provides ongoing savings that help offset the higher initial investment.
Environmentally focused builders and homeowners appreciate metal roofing's recyclability and reduced landfill impact. The sustainable aspects of metal align with green building practices and reduced lifecycle environmental impact.
Asphalt shingles are preferred for:
Budget-focused projects where immediate cost is the primary concern benefit from asphalt shingles' lower installation expense. The significant upfront savings appeal to homeowners with limited renovation budgets.
Short-term usage situations such as homes that will be sold within 5-10 years make asphalt economically sensible. The lower initial investment may provide better returns when the ownership period won't realize the long-term benefits of metal roofing.
Traditional aesthetic preferences are easily satisfied with asphalt shingles. Neighbourhoods with established visual themes often feature asphalt roofing, making this choice blend seamlessly with surrounding properties.
DIY-friendly projects favour asphalt shingles due to easier handling and installation. Homeowners with basic construction skills can successfully install asphalt shingles, while metal roofing typically requires professional expertise.
What to Consider While Choosing Between Metal Roofing and Asphalt Shingles?
When selecting a roofing material, homeowners must evaluate several key factors that affect both immediate satisfaction and long-term performance. These considerations help determine which roofing option—metal or asphalt—best meets specific needs and circumstances.
- Roof lifespan: Metal roofing systems typically last 40-70 years with minimal degradation, often spanning a home's entire ownership period. Asphalt shingles offer a shorter service life of 15-30 years, with premium architectural shingles reaching the upper end of this range while standard three-tab shingles fall toward the lower end.
- Climate and weather resistance: Metal roofing excels in harsh Australian conditions, including high UV exposure, heavy rainfall, and bushfire-prone areas. The material resists damage from hail up to moderate sizes and can withstand winds exceeding 140 km/h when properly installed. Asphalt shingles perform adequately in moderate climates but degrade faster under intense sun exposure, may blow off in high winds, and offer less protection during bushfires.
- Installation complexity: Metal roofing requires specialised skills and equipment, with installation taking 5-10 days for an average home. The precision needed for proper seaming and flashing makes professional installation necessary. Asphalt shingle installation is more straightforward, typically completed in 2-5 days, and uses common roofing tools and techniques that make it accessible to more contractors.
- Structural load capacity: Metal roofing weighs 50-150 pounds per 100 square feet (one square), placing minimal stress on the home's structure. Asphalt shingles weigh considerably more at 250-450 pounds per square, potentially requiring additional structural support for older homes or when multiple layers already exist.
- Style preferences: Metal roofing offers clean lines and a contemporary appearance that complements modern architectural styles. Asphalt shingles provide a traditional look with various textures and dimensional options that work well with colonial, craftsman, and conventional suburban home designs.
- Long-term maintenance: Metal roofing requires minimal upkeep beyond occasional cleaning and inspection. Asphalt shingles need more frequent maintenance, including replacing damaged shingles, cleaning moss or algae growth, and addressing curling or lifting edges as the material ages.
- Environmental impact: Metal roofing is 100% recyclable at the end of its service life and often contains significant recycled content already. Asphalt shingles typically end up in landfills, contributing approximately 11 million tons of construction waste annually in Australia and other countries with similar building practices.
- Energy efficiency: Many metal roofing products meet ENERGY STAR requirements for solar reflectance, reducing cooling demands in hot climates. Standard asphalt shingles absorb more heat, though some premium cool-roof asphalt options now offer improved reflectivity but still underperform compared to metal alternatives.
Cost Differences Between Metal Roofing vs Asphalt Shingles
The direct comparison of average cost per square foot reveals significant upfront price differences between these roofing options. Metal roofing materials typically cost $7-12 per square foot including installation, with premium options like copper reaching $15-25 per square foot. Asphalt shingles cost substantially less at $3-5 per square foot installed for standard three-tab shingles and $4-7 per square foot for architectural shingles.
These figures translate to approximately $10,500-18,000 for a metal roof on a 1,500 square foot home, compared to $4,500-10,500 for asphalt shingles on the same structure. However, when calculating lifetime costs over 50 years, metal roofing often proves more economical since asphalt roofing may require replacement two or three times during that period.
Durability Comparison Between Metal Roofing vs Asphalt Shingles
Metal roofing lasts 40–70 years and provides excellent protection against weather elements. Metal roofs resist damage from high winds, hailstorms, and heavy rainfall. The material's non-combustible nature gives it superior fire resistance ratings. Metal roofing maintains its structural integrity throughout its lifespan with minimal deterioration.
Asphalt shingles typically last 15–30 years depending on quality and environmental conditions. Asphalt materials show reduced resistance to hail impacts, with potential damage occurring from medium to large hailstones. Heat accelerates the aging process of asphalt shingles, causing granule loss and degradation. Extreme temperature fluctuations can lead to cracking and curling of asphalt materials over time.
Who Should Install Metal Roofing and Asphalt Shingles in Adelaide?
Metal roofing installation requires specialized licenses, extensive training with metal-specific techniques, and proper equipment including metal shears and seaming tools. Installers need experience with panel systems, proper flashing methods, and understanding of metal's expansion properties. Professional installation ensures proper water-tight seams and connections essential for metal roofing performance.
Asphalt shingle installation needs qualified roofing contractors with experience in shingle application techniques. Installers require standard roofing tools and knowledge of correct nailing patterns and overlapping methods. Proper ventilation understanding and underlayment preparation are essential skills for asphalt installation.
Hiring local professionals familiar with Adelaide's climate conditions provides significant benefits. Local installers understand regional weather patterns that influence roofing performance and longevity. Their knowledge of local building codes ensures compliant installation that meets all requirements. Professional installation maximizes the lifespan potential of either roofing system.
Who Can Help on Choosing Between Metal Roofing vs Asphalt Shingles?
Roofing consultants provide independent, unbiased assessments of your specific roofing needs. These professionals evaluate your home's structural requirements, local climate factors, and budget constraints to recommend the most suitable option. Consultants typically have extensive knowledge of various roofing systems without ties to specific products.
Licensed roofing contractors offer practical expertise based on installation experience with both materials. Reputable contractors can explain the real-world performance differences they've observed in local conditions. Their hands-on knowledge provides valuable insights into installation challenges and long-term maintenance expectations for each material.
Home improvement advisors from building supply retailers can showcase various product options and explain manufacturer specifications. These advisors often have access to displays, samples, and performance data that help visualize how different materials will look and function in your home. They can also explain warranty differences and current material availability.
Contact Adelaide Roofing & Construction today on 0402 767 499 or visit www.adelaideroofingandconstruction.com.au to speak with our roofing specialists who can help you navigate this important decision. Our experienced roofers can provide detailed information on how each roofing option would perform specifically for your home.
What Are the Alternatives of Metal Roofing and Asphalt Shingles?
Beyond metal roofing and asphalt shingles, homeowners have several additional roofing material options to consider. These alternatives offer different combinations of aesthetics, durability, price points, and performance characteristics.
- Tile roofing: Concrete and clay tiles create distinctive profiles with excellent durability. Concrete tiles provide 50+ years of service while offering superior fire resistance and moderate cost compared to other premium options. These tiles withstand extreme weather conditions but add significant weight to the roof structure. Clay tiles deliver authentic Mediterranean or Spanish architectural styling with natural insulation properties and exceptional longevity. The material resists fading and deterioration but requires proper structural support due to its weight and comes with higher material and installation costs.
- Wood shake shingles: These natural wood products create a warm, rustic appearance that weathers to an attractive silver-grey patina over time. Wood shakes provide excellent insulation qualities and unique character that many homeowners find appealing. The typical lifespan ranges from 25-30 years with proper maintenance, which includes regular treatments against moisture, insects, and mould. While offering moderate fire resistance that can be improved with special treatments, wood shakes require more ongoing care than most alternative materials.
- Slate roofing: Natural stone slate represents the premium end of roofing materials, delivering unmatched longevity that often exceeds 100 years. Slate provides an elegant appearance with subtle colour variations and exceptional weather resistance. The material never rots and stands up to extreme conditions including freezing temperatures and high winds. Its significant weight requires substantial structural support, and its higher cost and specialized installation requirements make it less common despite its superior performance characteristics.
- Synthetic roofing materials: Modern polymer and rubber compounds create versatile alternatives that mimic the appearance of natural materials without their drawbacks. These engineered products replicate the look of slate, wood, or tile while offering lighter weight and simpler installation. Synthetic options typically last 40-50 years with minimal maintenance requirements and excellent impact resistance. Many synthetic products contain recycled content and provide consistent performance at moderate price points, making them increasingly popular choices for environmentally conscious homeowners.
Hire Adelaide Roofing & Construction to Make the Best Choice
Connect with our roofing specialists today to receive expert guidance on selecting the perfect roofing solution for your home. Our experienced roofers understand Adelaide's unique weather conditions and how different roofing materials perform in our local environment.
Schedule your free consultation by calling 0402 767 499 or emailing admin@adelaideroofingandconstruction.com.au. Our professionals will evaluate your specific needs, answer all your questions, and provide clarity on the best options for your property and budget.
Request a detailed quote that outlines all costs associated with your roofing project. Our transparent pricing ensures you understand the initial investment and long-term value of your roofing choice, with no hidden surprises or additional charges.
Visit www.adelaideroofingandconstruction.com.au to see examples of our completed projects and learn why we've been Adelaide's trusted roofing experts since 2014.