Detailed explanation of flexible stone: what is it and why it is changing the wall decoration industry

If you are purchasing MCM flexible stone for residential, hotel, commercial, or exterior wall projects, in addition to confirming the purchase area and patterns/textures, customers typically also want to know whether the product can be used outdoors, whether a separate adhesive is required, and whether there are differences between indoor and outdoor versions. It is important to note that MCM flexible stone is intended solely for wall cladding and must not be used on floors, stair treads, or other areas subject to prolonged foot traffic or heavy loads. Below is a compilation of frequently asked questions during the procurement phase to serve as a reference before requesting a quote.

MCM Flexible Stone can be used on outdoor walls, building facades, storefronts, and courtyard accent walls, among other applications. However, whether it is suitable for a specific application must be determined by comprehensively evaluating the product’s surface finish, weather resistance rating, waterproofing performance, and local climate conditions. After outdoor installation is complete, the panel surfaces must be coated with a specialized sealer to protect against UV damage, extend service life, and enhance stain resistance. If the project is located in areas with high temperatures and intense sunlight, heavy rainfall and high humidity, extreme cold and freezing conditions, or coastal salt fog, it is recommended to verify the product’s weather resistance parameters, water absorption rate, freeze-thaw resistance, and whether the accompanying sealer is suitable for the local climate before placing an order. The sealer must be applied in accordance with the manufacturer’s instructions after the panels have been installed and meet construction specifications. It is also important to confirm whether the sealer will alter the stone’s original color, luster, and texture, as well as whether periodic maintenance and re-coating will be required in the future.

Its use is not recommended. MCM flexible stone is intended solely for wall decoration and cannot be used in areas such as standard floors, stair treads, or platforms that are subject to prolonged foot traffic, external impacts, and structural loads. Due to limitations in panel thickness and the nature of its flexible structure, its wear resistance, impact resistance, and compressive strength do not meet the performance standards required for flooring materials. Even if a project has specific design requirements for decorative textures, it is not recommended to use MCM flexible stone on floors. Residential, commercial, and high-traffic public spaces must all use specialized flooring materials that meet the relevant requirements for slip resistance, wear resistance, compressive strength, and safety.

Adhesives generally need to be selected and matched based on the substrate and application environment, and are usually not included in the product quote for the panels. Different substrates—such as cement walls, drywall, wood panels, metal surfaces, and old tiles—require different types of adhesives and installation methods. The selection of adhesives will also vary depending on whether the application is for interior walls, exterior facades, damp areas, or environments with significant temperature fluctuations.                                                                           

We recommend clarifying the following when requesting a quote: whether the quote includes adhesives; the adhesive models recommended by the manufacturer; the approximate usage per square meter; and whether a bonding primer, base coat, or sealant is required; whether the adhesive is suitable for outdoor or damp conditions; and whether the adhesive and topcoat are compatible for outdoor installation. For large-scale projects, it is best to calculate the total consumption of adhesive, primer, sealant, and topcoat in advance to avoid delays in on-site construction progress.

The product formulations and manufacturing processes for MCM flexible stone used in interior and exterior applications differ. Interior panels primarily emphasize patterns, decorative textures, and ease of installation; exterior panels, on the other hand, must additionally meet requirements for weather resistance, waterproofing, UV resistance, and freeze-thaw resistance, while also accommodating the effects of substrate deformation.                In addition, outdoor installation imposes stricter requirements regarding adhesive selection, joint sealing, topcoat application, and substrate flatness. After outdoor panels are installed, a compatible topcoat must be applied to protect against UV-induced aging, extend service life, and enhance the surface’s stain resistance. Even if a product is certified for outdoor use, it must be installed according to a corresponding, comprehensive installation plan; the installation methods used for indoor walls cannot be directly applied.

Some models can be used in indoor damp areas such as bathroom accent walls, kitchen walls, and restrooms; however, you should verify the panels’ water resistance rating in advance and determine whether surface protection treatment is required. For areas constantly exposed to water—such as shower areas and around bathtubs—in addition to confirming the material’s inherent properties, you must ensure proper waterproofing of the substrate, sealant application at joints, and edge finishing. We recommend identifying the specific installation locations before purchasing and avoiding the use of standard indoor panels in areas subject to prolonged water exposure. If kitchen and bathroom walls are prone to grease, water stains, or contact with cleaning agents, apply the appropriate surface protection treatment according to the manufacturer’s instructions to enhance stain resistance and facilitate daily cleaning and maintenance.

Whether surface protection is required depends primarily on the product’s surface structure, the actual usage environment, and the manufacturer’s instructions for use. For MCM flexible stone used outdoors, we recommend applying a protective topcoat across the board. The topcoat primarily serves the following purposes: it prevents aging caused by prolonged exposure to UV rays, extends the material’s overall service life, enhances the surface’s stain resistance, reduces the adhesion of dust, rainwater, and external contaminants, and facilitates routine cleaning and maintenance. Some products come with a basic protective treatment applied at the factory, while others require the sealer to be applied on-site after installation is complete. When purchasing, be sure to clarify whether the sealer is included in the quote, the manufacturer’s recommended sealer model, the approximate coverage per square meter, and whether periodic maintenance will be required in the future. Before applying the sealer, also confirm whether it will alter the panel’s original color, gloss, or surface texture; it is best to conduct a small-scale test application first.

Differences in product texture, pattern, and surface treatment can affect appearance, water absorption, stain resistance, and daily maintenance requirements. For textures that mimic natural stone, there may also be slight variations in color and pattern between different production batches. If a project has strict requirements for color consistency, we recommend confirming physical samples before placing a large order and, whenever possible, purchasing all materials from the same production batch in a single transaction. Additionally, confirm with the manufacturer in advance whether the product exhibits natural color variations, texture fluctuations, or batch differences. For outdoor projects, note that slabs with different colors or surface finishes may require different types of protective sealants; ensure that the protective materials are compatible to avoid compromising the final decorative effect.

Yes, you should. MCM flexible stone will experience normal waste during installation processes such as cutting, joining, and corner finishing. The waste ratio may vary depending on the wall design, the number of door and window openings, pattern-matching requirements, and the skill level of the installers. It is generally recommended to set aside a certain percentage of extra panels in addition to the actual construction area. For projects with complex patterns, irregularly shaped walls, or those requiring precise pattern matching, a larger allowance is necessary; consult the manufacturer in advance for their recommended reasonable wastage rate. For outdoor wall projects, it is also advisable to set aside extra material from the same batch to ensure color and pattern consistency during future repairs or partial replacements.

To ensure we can provide an accurate product proposal and formal quote, we recommend that you prepare the following information in advance:

The country and city where the project is located, the building type, and the specific application—whether it’s for interior walls, exterior facades, kitchen and bathroom areas, or other wall surfaces;

The estimated total construction area, preferred stone textures and patterns (you may include reference renderings);

Panel specifications, dimensions, and thickness requirements, as well as whether special customization is needed;

Local climate conditions and on-site construction conditions;

Whether you need to purchase matching adhesives, primers, sealants, or topcoats; for outdoor projects, whether a specialized weather-resistant topcoat is required;

Port of destination or delivery address, as well as the planned purchase quantity and required delivery timeline.