WPC HOLLOW JOIST FOR UNDER SUPPORT
40x30mm
35% environmental plastic materials(Grade A Recycled HDPE )
55% natural wood fiber
10% chemical additives. (Anti-UV agent, Anti-oxidation agent, stabilizers,
colorants, anti fungus agent, coupling agent, reinforcing agent, lubricants.)
200 square metres
Pay a 30% deposit, balance paid before shipment
Usually, 4 pieces one bag . Packing with plastic flim in pallets
Within 20days after receipt of payment for normal order
The YT-A40J30 WPC Solid Joist is a key structural component designed to provide strong, stable, and long-lasting support beneath decking systems. Made from a premium blend of 55% natural wood fiber, 35% recycled HDPE, and 10% high-performance chemical additives, this solid joist delivers superior strength and durability compared to traditional wood support beams. It forms the foundation for WPC decking, ensuring even load distribution and enhanced structural integrity for both residential and commercial installations.
This under-support joist is crafted using advanced extrusion technology, combining the natural texture of wood with the resilience of engineered composite materials. The result is a product that resists environmental damage, deformation, and decay while maintaining its shape and strength over years of use.
Product Advantages
1. High Structural Strength
The solid core design provides exceptional load-bearing capacity, making it ideal for supporting heavy decking structures or high-traffic outdoor floors. It minimizes bending and sagging, ensuring stability throughout the decking’s lifespan.
2. Outstanding Weather Resistance
Engineered to withstand UV exposure, rain, humidity, and extreme temperature changes, the WPC solid joist retains its mechanical strength and dimensional stability without cracking, swelling, or warping.
3. Long-Term Durability
The material composition includes anti-oxidation and anti-fungal agents that protect the joist from mold, rot, and insect damage. It does not splinter or corrode, ensuring a service life far longer than standard timber joists.
4. Eco-Friendly Material
The YT-A40J30 joist is produced from recycled HDPE and sustainably sourced wood fibers, minimizing environmental impact. It is 100% recyclable and free of harmful formaldehyde and heavy metals.
5. Low Maintenance Requirements
Once installed, the solid joist requires virtually no maintenance. It does not need painting, sealing, or regular treatment like wood supports, saving both time and long-term costs.
6. Stable and Secure Deck Foundation
Its solid construction provides consistent support for the entire deck system, preventing surface unevenness and reducing the risk of structural movement due to moisture absorption.
Product Uses
1. Under-Deck Support System
Primarily used as the structural base for WPC decking boards, the YT-A40J30 solid joist ensures secure installation and even spacing. It acts as the backbone of any decking project.
2. Outdoor Flooring in Public Areas
Ideal for commercial or public projects such as parks, resorts, and recreational platforms where durability and strength are essential.
3. Residential Patios and Balconies
Perfect for backyard decks, poolside platforms, and rooftop terraces, where it provides stable support even under variable weather conditions.
4. Pathway and Boardwalk Construction
The joist can also be used beneath outdoor pathways, providing a strong, moisture-resistant base that maintains alignment and prevents sinking or shifting.
The YT-A40J30 Solid WPC Joist is precision-engineered to fit seamlessly with other WPC decking components. Its 40x30mm profile offers a compact yet robust solution, suitable for both small-scale and large-scale projects. The use of co-extruded protection additives enhances resistance to fading and aging, maintaining performance in environments exposed to sun and water.
Installation is straightforward and compatible with standard composite decking fasteners. Once in place, it provides a smooth, balanced substructure that extends the lifespan and safety of the entire decking system.
