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Northstar & Calgary: Unearthing Gold from Old Roofs in a Bold Sustainability Play

  • Nishadil
  • November 13, 2025
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  • 3 minutes read
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Northstar & Calgary: Unearthing Gold from Old Roofs in a Bold Sustainability Play

There’s something genuinely inspiring about seeing innovation tackle what seems like an insurmountable problem. And, honestly, that's exactly what Northstar Clean Technologies and the City of Calgary are setting out to do with a brand-new, rather pivotal five-year agreement. It’s not just a contract, you see; it's a bold commitment, a partnership truly poised to rewrite the narrative around what we once considered mere waste.

Picture this: thousands upon thousands of tonnes of old, worn-out asphalt shingles, the kind that peel off roofs after years of enduring our sometimes-harsh weather. For too long, their destiny was a dreary one, piled high in landfills, contributing to environmental woes and simply taking up space. But for once, a different path is opening up. This deal will see Calgary providing Northstar’s Empower Calgary facility with these discarded shingles, transforming them from environmental burden into something remarkably valuable.

So, what magic happens at this facility, you might wonder? Well, it’s less magic and more ingenious engineering. Northstar, you see, boasts a patented bitumen extraction technology. And what it does is rather clever: it meticulously separates the various components of those old shingles – the liquid asphalt, the fiber, and the aggregate – essentially giving them a new lease on life. These aren't just by-products; they're high-quality, reusable materials, ready to be reintegrated into the construction and infrastructure sectors across North America. Think new roads, new roofs, all from what was headed for the dump.

This collaboration, frankly, feels like a win-win on multiple fronts. For Northstar, led by CEO Aidan Mills, it’s a significant stride in their growth trajectory, solidifying their role in the burgeoning circular economy. “Securing this supply,” Mills recently remarked, “is absolutely crucial for the continuous operations and growth of our Empower Calgary facility.” And for the City of Calgary? Todd Dettmer, who oversees Waste & Recycling Services, highlighted the sheer volume involved—an estimated 10,000 to 15,000 tonnes of shingles annually, now diverted. It's a testament to the city’s proactive approach to sustainability, isn't it?

Beyond the sheer tonnage diverted, which is impressive enough, there’s a deeper current running here. This isn't just about moving material; it's about minimizing the environmental footprint, reducing reliance on virgin resources, and, you could say, breathing new economic life into what was once considered dead-end waste. It’s a tangible example of how local partnerships can yield global benefits, setting a precedent for other municipalities grappling with similar challenges.

In truth, what Northstar and Calgary are doing together is more than just recycling; it’s about fostering a genuinely circular economy. It’s about envisioning a future where materials are valued, reused, and continuously flow through our systems, rather than piling up in ever-growing mountains of trash. And frankly, for anyone who cares about a cleaner, greener planet, that’s a narrative worth celebrating, a story with some very solid foundations indeed.

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