Natural stones like marble and granite have long been the gold standard for high-end projects. However, in the age of CBAM, they are becoming "hidden budget killers":

1.Energy-Intensive Extraction & Processing: Traditional stone requires heavy machinery for quarrying and high-pressure water cutting/polishing, consuming massive amounts of electricity and non-renewable energy.

2.A Massive Transport Carbon Footprint: Weighing 50–60kg/㎡, traditional stone is incredibly heavy. Shipping these materials across borders requires significant container space and results in high maritime carbon emissions.

3.High Material Waste: The cutting and shaping process often results in over 50% of the raw material becoming waste, which not only squanders resources but also adds to the project’s waste-disposal carbon footprint.

Under CBAM regulations, every unit of carbon footprint exceeding the threshold means higher costs paid into the EU customs system.

Before innovation:

Using traditional materials necessitates the demolition of the original coating layer. Scaffolding protection is required to mitigate dust dispersion and the risk of material spalling.

However, the combination of flexible stone and swing stage construction effectively addresses the issues inherent in traditional methods. Flexible stone optimizes the efficiency of vertical transport and construction, minimizing the engineering time; swing stage has less impact on the building, no need for large-scale scaffolding. This approach provides an ideal solution for the difficulty in high-rise exterior wall renovation while minimizing the disruption to the surrounding environment and occupants' daily life.

Swing stage construction work：

Under renovation:

To deal with weathered traces and water residue marks, flexible stone is factory-prefabricated with Curved drip edge with integral molding. To align with our brand, we specially design a petal-shape component, making rain discharge outward away from the wall surface. The curved slope accelerates drainage, creating a scouring effect and reducing stain deposition. The lower arch design helps prevent sewage backflow, maintaining the building's appearance as clean as new.

The unique flexibility of flexible stone allows it to curve seamlessly with the drip edge, creating a unified, continuous, and cohesive appearance.

After innovation:

Flexible stone restores the texture of natural stone and offers brilliant weather resistance and stain resistance. Mold-resistant and crack-resistant, with a clean and white finish, improving the visual sophistication and receiving unanimous praise from owners.

*After three months of testing, we can clearly see that under the impact of rain and dust, the surface of traditional coating appears obvious weathered traces. By contrast, flexible stone has less staining, and its stain resistance is close to aluminum plate, maintaining llong-term clean and attractive.

At 21-Parkhouse, we aren't just improving traditional materials; we are disrupting them. Our Flexible Stone leverages three core technologies to help clients solve CBAM compliance issues right at the project's inception:

1. PV-Powered Robotic Factory — Decarbonization at the Source

We believe green materials must come from green factories. Our core production facility is fully powered by Photovoltaic (PV) clean energy. Our high-precision robotics execute the thermal-controlled pressing process, ensuring every watt of electricity comes from the sun. This results in an ultra-low emission baseline for your CBAM carbon accounting.

*Before renovation

*After renovation

2. Zero-Waste 3D Printing — Efficiency Meets Low Impact

Unlike the "subtractive" cutting of traditional stone, we utilize advanced 3D printing technology for "additive" manufacturing. We can print materials precisely according to design specifications—even for complex double-curved surfaces. This achieves nearly zero material waste, drastically reducing the carbon emission intensity per square meter.

3. 100% Recyclable Composition — Embracing the Circular Economy

By perfectly blending natural mineral powder with eco-friendly polymers, our Flexible Stone is 100% recyclable at the end of its lifecycle. This not only meets the highest European standards for the circular economy but also allows clients to gain "carbon credits" for sustainable waste management during future deconstruction.

Case 4: Tak Shing House, Hong Kong

*300㎡ of the exterior wall utilized 21Parkhouse® Evian Stone.

Case 5: 75 Fuk Lo Tsun Road (Wang Jing Project), Hong Kong

*400㎡ of the exterior wall utilized 21Parkhouse® Tours Line Stone and Evian Stone.

Let’s look at what choosing 21-Parkhouse means for your project’s bottom line:

The Bottom Line: By choosing 21-Parkhouse, your material carbon footprint can be reduced by over 90%. This significantly lowers or even eliminates the need to purchase CBAM certificates upon entry into the EU.

In the global trade landscape of 2026, sustainability is no longer just a responsibility—it is a core competency. By adopting 21-Parkhouse Flexible Stone, European developers and architects can:

1.Drastically Reduce Project Costs: Avoid potential million-dollar CBAM tax liabilities.

2.Accelerate Project Approval: Meet the latest EU building regulations and pass rigorous environmental audits with ease.

3.Enhance Asset Value: Earn higher scores for green building certifications such as BREEAM, LEED, or DGNB.

"Our materials don't just reduce the weight of your building; they reduce the regulatory and financial weight of your project."