What is the recycled content in MCM Big Slab Board Series

Sustainability is no longer a nice-to-have in construction — it is a requirement written into project briefs, tenders, and green building certifications. When architects and developers look at cladding materials, one of the first questions they ask is: how much of this product is actually recycled? For the MCM Big Slab Board Series, the answer is one of its strongest selling points. This article explains what recycled content means in MCM boards, where it comes from, how much is typically used, and why it matters for your next project.

What is MCM and why does recycled content matter?

MCM stands for Modified Clay Material, a family of flexible building panels that replicate the look of natural stone, travertine, marble, wood, and concrete while weighing only a fraction of the real thing. Unlike quarried stone or kiln-fired ceramic, MCM is manufactured from modified inorganic mineral powders. The key difference is the raw material: instead of extracting virgin stone from the earth, MCM production starts with recycled mineral materials that would otherwise be discarded. That is what makes recycled content such a central topic for anyone specifying these panels.

Where does the recycled content in MCM Big Slab Boards come from?

The recycled content in MCM boards is drawn from a range of industrial and construction waste streams. Common sources include quarry dust and stone processing scraps, fly ash from power plants, mineral processing tailings, and non-metallic industrial waste. These materials are crushed, screened, and refined into fine mineral powders that form the base of the board. Instead of sending these byproducts to landfill, manufacturers transform them into a high-performance building material — a genuine example of turning waste into value.

How much recycled content is actually in the boards?

Recycled content levels vary by manufacturer and product line, but MCM panels are known for their high recycled mineral content. Industry figures commonly cite recycled content in the range of 15% to 30% for verified green building documentation, while some MCM formulations report recycled mineral content reaching 70% or more of the raw material base. The exact percentage depends on the specific formulation, the colour and texture being produced, and the certification documentation a manufacturer can provide. When you are evaluating suppliers, it is always worth asking for the recycled content documentation directly — reputable manufacturers will share it openly.

Does recycled content compromise quality?

No — and this is the point that surprises most specifiers. The recycled mineral powders are modified and stabilized through a low-temperature curing process, which is fundamentally different from firing ceramic at over 1,200°C. The result is a board that is flexible, lightweight, and durable. MCM Big Slab Boards typically weigh around 3 to 6 kg per square metre, compared with 50 to 100 kg for natural stone, which dramatically reduces transport emissions and structural load. The boards are also fire-resistant, weather-resistant, and maintain their colour over decades of exposure. Recycled content does not mean lower performance — it means smarter sourcing.

How recycled content supports green building certification

For projects pursuing LEED, BREEAM, or other green building ratings, recycled content is a recognised credit category. Materials with documented recycled content can contribute to credits under the Materials and Resources category, helping projects move closer to certification. Beyond the credits, the wider sustainability story of MCM is compelling: low-temperature manufacturing uses far less energy than ceramic or stone processing, the lightweight boards cut transport emissions, and at the end of a building's life the panels can be removed and reprocessed rather than sent to landfill. Choosing green building materials with genuine recycled content is one of the most practical steps a project team can take.

Why the Big Slab format makes recycled content even more attractive

The MCM Big Slab Board Series takes the benefits of recycled-content MCM and applies them to a large-format panel. Big slabs mean fewer joints, a cleaner visual surface, and faster installation on facades and feature walls. Combined with the material's light weight, the large format reduces the number of panels, the amount of adhesive, and the labour required — all of which further lowers the environmental footprint of a project. For architects who want a seamless stone or concrete look without the weight, cost, or environmental impact of the real material, the Big Slab Series is a natural fit.

Questions to ask your MCM supplier about recycled content

• Ask for documentation. Request the recycled content certificate or test report for the specific product line you are specifying.
• Confirm the source. Ask which waste streams the recycled minerals come from — quarry dust, fly ash, tailings, or a combination.
• Check the full picture. Recycled content is one metric; also look at manufacturing energy, transport weight, and end-of-life recyclability.
• Verify performance data. Make sure the recycled-content board still meets your fire, weather, and durability requirements.

Recycled content is just the beginning

Recycled content is one of the most visible sustainability credentials of MCM boards, but it sits within a much larger environmental story. Low-energy manufacturing, lightweight logistics, low installation waste, and end-of-life reprocessing all contribute to a material that is genuinely kinder to the planet. The MCM Flexible Stone range and the Big Slab Board Series both carry these benefits, giving specifiers a wide palette of textures and formats to choose from.

Conclusion

So, what is the recycled content in MCM Big Slab Board Series? It is a meaningful share of recycled mineral materials — sourced from quarry dust, fly ash, and industrial tailings — that would otherwise end up in landfill. The exact percentage varies by formulation and supplier, so always request the documentation. What matters most is that recycled content in MCM does not come at the cost of performance: the boards remain lightweight, durable, fire-resistant, and visually stunning. For architects and developers looking to build responsibly without compromising on design, the MCM Big Slab Board Series is a smart, sustainable choice. Contact Coloria Group to discuss your project and request the technical documentation for your next specification.