Overview
The SONSILL 138mm Solid WPC Wall Cladding is a heavy-duty exterior facade board engineered for commercial buildings, schools, public spaces, and high-traffic outdoor wall applications where maximum structural rigidity, impact resistance, and long-term durability are the primary specification requirements. The solid-core WPC profile delivers superior impact resistance and load-bearing performance compared to hollow-core alternatives, making it the preferred specification for ground-level facade cladding, public building exteriors, and any application where the wall surface is subject to physical contact or impact. At 138mm wide and 23mm thick, this narrow-board profile provides a refined facade aesthetic with a natural wood grain surface finish. The WPC composite construction provides low water absorption, resistance to moisture, rot, and insects, and long-term dimensional stability in exposed outdoor environments. Designed for commercial contractors, public sector project teams, and wholesale distributors specifying robust, low-maintenance exterior cladding for high-traffic building applications.
Specifications
- Material: WPC Solid Core
- Width: 138mm
- Length: 2900mm
- Thickness: 23mm
- Profile: Solid
- Coverage per Board: 0.400 sqm
- Weight: 4.50 kg/sqm
- Water Absorption: ≤0.5%
- Formaldehyde Emission: E0 (Eco-Friendly)
- Fire Rating: Class B1 (Fire Retardant)
- Service Life: 20+ Years
- MOQ: 500 meters
- Origin: China
- Certification: CE, SGS
Applications
- Commercial building exterior wall cladding
- School and educational facility exterior facade
- Public building and civic infrastructure wall cladding
- High-traffic ground-level facade panels
- Sports facility and recreation centre exterior walls
- Heavy-duty boundary and perimeter wall cladding
Features
- Solid-core WPC profile — superior impact resistance for high-traffic and public building applications
- 4.50 kg/sqm — dense, rigid construction for demanding exterior environments
- 138mm narrow-board format — refined facade aesthetic with strong horizontal or vertical line definition
- Water absorption ≤0.5% — engineered for permanent outdoor and exposed facade installation
- Resistant to moisture, rot, insects, and mold — suitable for all climate zones
- 20+ year service life in standard outdoor conditions
- E0 formaldehyde-free composite — environmentally responsible material specification
- Class B1 fire retardant rating meets commercial and public building code requirements
- Compatible with standard aluminium hidden clip and screw-fix installation systems
Installation
SONSILL 138mm Solid WPC Wall Cladding boards install horizontally or vertically onto a prepared aluminium or galvanised steel subframe using a hidden clip fixing system or face-fix stainless steel screws. Erect the subframe at 400–600mm centres, ensuring all members are level, plumb, and structurally fixed to the building substrate. For high-traffic ground-level applications, specify a subframe fixing pattern at 400mm centres maximum to ensure adequate panel support and impact resistance. For hidden clip installation, fix the first board at the base of the wall and engage the clip into the board groove before fixing the clip to the subframe. Continue installing boards sequentially, engaging each board into the clip of the previous board. Maintain a minimum 10mm expansion gap at all board ends and perimeter junctions to accommodate thermal movement. Finish all exposed board ends with compatible SONSILL WPC end caps or aluminium trim sections. Contact SONSILL technical support for commercial or public sector project facade engineering specifications and installation documentation.
FAQ
Is this panel for outdoor use?
This SKU is listed in the outdoor WPC wall cladding range. Confirm profile type, co-extrusion status and climate zone before exterior installation.
Can I request samples before a bulk order?
Yes. Share climate zone, color direction and quantity so we can align samples, packing and quote details.
View all outdoor cladding: Outdoor WPC Wall Cladding.
