When it comes to roofing, most building owners focus on cost, durability, and aesthetics. But there’s another factor that’s becoming increasingly important: environmental impact. The life cycle assessment (LCA) of roofing materials tells us a compelling story—one that highlights the sustainability of metal roofing over traditional options like asphalt shingles, concrete, and bitumen.
At McElroy Metal, we’re committed to helping building owners make informed decisions that benefit their wallets and the planet. Let’s explore why metal roofing stands out as a long-term, eco-friendly solution.
The life cycle of a roofing system includes everything from raw material extraction and manufacturing to installation, maintenance, and end-of-life disposal. The study, which evaluates different roofing materials using buildLCA, highlights key environmental factors such as:
The findings? Metal roofing—specifically steel solutions like those we offer at McElroy Metal—performs exceptionally well in all categories.
According to the study, steel roofing solutions have a significantly lower Global Warming Potential (GWP) than bitumen and concrete roofs. The Monterrey steel roof, for example, reduces GWP by nearly 60% compared to bitumen roofing.
Weight matters in roofing—not just for installation, but for long-term structural integrity. Metal roofing systems are 50% lighter than bitumen and 75% lighter than concrete, reducing the load on the building structure. Lighter materials also translate to lower transportation emissions.
The life expectancy of a roof is crucial. Here’s how different roofing systems compare:
Steel roofing solutions require 85% less maintenance than bitumen and don’t need frequent repainting like other options. This translates to long-term savings in both cost and environmental impact.
One of metal roofing's biggest sustainability advantages is its recyclability. The LCA study found that steel roofs have the highest recycling rates (up to 95%), while bitumen and concrete roofs contribute significantly more to landfill waste.
At the end of its life cycle, a McElroy Metal roof can be 100% recycled, reducing waste and contributing to a circular economy. Compare this to bitumen, which requires significant energy for disposal, and the choice becomes clear.
Choosing a metal roof isn’t just about aesthetics or durability for building owners—it’s a strategic investment. With energy-efficient coatings, superior longevity, and a lower carbon footprint, metal roofing aligns with modern sustainability goals while also saving money over time.
If you're considering a new roof or a retrofit project, McElroy Metal’s solutions can provide the best balance of performance, sustainability, and cost-effectiveness. Let’s build a greener, smarter future—one metal roof at a time.