Architects use materials to shape space and express ideas. With Concrete Pouring Slab, 21PARKHOUSE® translates the raw texture of exposed concrete into thin, flexible stone cladding.
01. The Beauty of Unadorned Concrete
In contemporary architecture, designers often choose exposed concrete for its restrained colour and direct expression of material. Light reveals the pores, casting marks and subtle irregularities across its surface.
The original product introduction looks to Tadao Ando’s concrete churches and Kengo Kuma’s textured façades as references for an interest in raw materials. Through these surfaces, architects explore the relationship between people, nature and the spaces they inhabit.
02. Concrete Pouring Slab by 21PARKHOUSE®
Following the principle of “less is more,” 21PARKHOUSE® draws on the plain beauty of concrete and the traces of its casting process. Concrete Pouring Slab reproduces that character in flexible stone sheets for architectural walls and curved forms.
| Item | Specification |
|---|---|
| Product | 21PARKHOUSE® Concrete Pouring Slab flexible stone |
| Sheet size | 2800 × 1200 mm |
| Thickness | 3–5 mm (±1 mm) |
| Weight | 3–6 kg/m² |
| Minimum bending radius | 200 mm |
The surface recreates the air pockets and markings that form as concrete is cast. Its rough, varied texture suits both heritage-inspired spaces and contemporary interiors, giving designers a way to introduce the quiet character of aged concrete.
Flexible Stone and Conventional Cast Concrete
The original 21PARKHOUSE® comparison presents the following differences. The figures describe the manufacturer’s comparison materials and test claims; they do not apply to every concrete product or wall assembly.
| Feature | Concrete Pouring Slab flexible stone | Conventional cast concrete |
|---|---|---|
| Weight | 3–6 kg/m², reducing the load during transport and installation. | The source comparison gives more than 200 kg/m² for its concrete reference. |
| Curved forms | Minimum bending radius of 200 mm for curved surfaces. | Rigid material; cannot bend after curing. |
| Environmental features | The brand describes natural, renewable inorganic raw materials, zero-carbon environmental performance and odour-decomposing properties. | The source highlights production-related carbon emissions and potential impacts on soil and water. |
| Impact resistance | The brand reports 60 times the impact resistance of traditional stone and resistance to cracking after installation. | The source notes potential cracking from external forces or shrinkage, with additional reinforcement required. |
| Design options | Customisable textures, colours and sizes, including stone, wood and woven effects. | The source describes a more uniform appearance that may require additional decorative treatment. |
These comparisons reflect the original brand article. The source does not include the underlying test reports or life-cycle assessment; project specifications should use the applicable product documentation.
03. Performance and Project Costs
With thin sheets and a weight of 3–6 kg/m², designers can reduce transport and installation loads while retaining a concrete-effect finish. Flexibility also allows curved wall details without casting a solid concrete element.
Fire Performance
In the original introduction, 21PARKHOUSE® reports EU Class A fire certification and compliance with China’s A2 requirements for building materials. The article identifies hotels and office buildings as intended applications and highlights high-temperature resistance and resistance to detachment. Confirm the applicable classification and wall-system requirements with the project’s technical team.
Ageing and Freeze–Thaw Resistance
21PARKHOUSE® reports 2,000 hours of accelerated ageing and 100 freeze–thaw cycles between −30°C and 50°C, with no surface chalking or cracking. The source equates the ageing result to 30–50 years of outdoor use; this is the brand’s estimate, rather than a stated service-life warranty. These properties support the use of the material on walls exposed to cold and sunlight, subject to the specified installation system.
Water and Moisture Resistance
The original article describes resistance to water and salt spray for exterior rain exposure and humid interiors. It also identifies spas, poolside areas and coastal settings as applications for wall finishes, helping designers address moisture-related cracking and detachment.
21PARKHOUSE® combines material technology with natural surface textures to reduce reliance on heavy, solid finishes. Concrete Pouring Slab offers a thin, bendable option for designers who want the texture of cast concrete while managing installation demands and project costs.
Contact 21PARKHOUSE® for samples, current technical documentation and a quotation for your Concrete Pouring Slab project.
