With over 32 years of deep-rooted expertise in the building materials industry, Yiheng Holdings has perfected the Interior Wall Underlayment Sheet to meet the rigorous demands of modern partition systems. As a leading manufacturer based in Zhejiang, we utilize our 30,000-square-meter facility and 20+ automated production lines to ensure every sheet provides a perfectly flat, dimensionally stable substrate for various wall finishes. Unlike standard drywall, our Interior Wall Underlayment Sheet is engineered to resist structural shifting and moisture, making it the preferred choice for high-end commercial projects and residential renovations. We have integrated our decades of R&D into the core of this board, ensuring it surpasses industry standards for impact resistance and bonding strength.
Our commitment to quality is backed by over 30 independent patents and a rigorous 100% manual inspection process before any shipment leaves our factory. We understand that for international distributors and contractors, reliability is paramount. That is why our Interior Wall Underlayment Sheet is designed for rapid installation, significantly reducing labor costs on-site. Having supported landmark projects like the Shanghai World Expo, we bring "national high-tech enterprise" precision to every order. Whether you are looking for a standard size or a custom thickness to meet specific building codes, our team leverages 30+ years of manufacturing history to provide a solution that balances performance with cost-efficiency.
Specifications
| Core Material | High-density extruded polystyrene or reinforced cementitious core |
| Surface Finish | Alkali-resistant fiberglass mesh with polymer mortar coating |
| Standard Thickness | 6mm, 10mm, 12.5mm, 20mm (Customizable) |
| Standard Size | 600x1200mm, 1200x2400mm |
| Compressive Strength | ≥ 300 kPa |
| Water Absorption | ≤ 1.5% by volume |
Application Fields
Internal Partition Walls
Provides a solid base for drywall or wood paneling.
01
Kitchen & Bathroom Substrates
Ideal for areas requiring additional moisture stability.
02
Commercial Fit-outs
Used in shopping malls and office buildings for rapid wall leveling.
03
Renovation Projects
Overlays for existing uneven walls to create a smooth tiling surface.
04
Customization Capability
As a source factory, we offer comprehensive OEM and ODM services. We can manufacture Interior Wall Underlayment Sheet based on your specific technical drawings or prototypes. Whether you need custom dimensions, specific density requirements, or private labeling for your brand, our R&D team is equipped to deliver. We support a minimum order quantity (MOQ) of just 1 piece for standard trials, and custom sample development typically takes only 7 days.
Packaging & Shipping
Packaging Method
Heavy-duty wooden pallets or bulk loading for maximum container utilization.
Shipping Terms
We support EXW and FOB (Ningbo / Shanghai).
Production Lead Time
15 days for standard products; 20 days for custom-made orders.
Quality Assurance
100% inspection before packing to ensure zero-defect delivery.
FAQ
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