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Our WPC solid joists are available in 40*25mm and 40*30mm specifications, serving as high-strength foundational support structures specifically designed for outdoor decking and wall systems. Unlike traditional hollow joists or rot-prone treated timber, these joists utilize a fully solid extrusion process with extremely high density. They offer exceptional compressive strength, bending resistance, and screw-holding power, stably supporting the boards above without sagging or deforming under prolonged foot traffic. Furthermore, they are completely waterproof, rot-proof, insect-resistant, and termite-proof, withstanding underground moisture or rain immersion to fundamentally extend the lifespan of the entire decking system. The 40*25mm size is ideal for standard residential patios, balconies, and lightweight wall panel installations, while the heavier-duty 40*30mm is better suited for high-load public areas such as park boardwalks and commercial plazas, providing a safe, stable, and maintenance-free understructure.
رقم الصنف :
25-40、30-40النظام (موك) :
200 Square Meterقسط :
30% Deposited,the rest should be paid before deliverأصل المنتج :
Wuhu, Anhui Province, Chinaلون :
Teak/Mahogany/Red Brown/Coffee/Walnut/Chocolate/Blackميناء الشحن :
Shanghai/Wuhuمهلة :
15-20 DayComposite Decking
Specifications
A solid WPC joist is a fully dense, hollow-free substructure profile — screws bite into solid material, clips can't pull out, ends don't crush: the load-bearing base the whole deck sits on.
| Model | WPC solid joists |
| Type | Composite Decking |
| Dimension | 40mm *25mm、40mm *30mm |
| Material | Wood Plastic Composite |
Composite Decking
Description
WPC solid joists are indispensable hidden load-bearing skeletons in outdoor decking and wall systems. Unlike traditional timber, which easily rots from moisture, or hollow profiles, which can crush under pressure, these joists utilize a fully solid extrusion process with extremely high density. They deliver robust bending strength and superior screw-holding power. Even under prolonged load-bearing and heavy pressure, they remain perfectly straight and stable without any deformation. Their core value lies in absolute moisture resistance and resistance to biological degradation: even when in direct contact with damp ground or buried in soil and standing water, they will not mold, rot, or attract termites. This fundamentally eliminates the safety hazard of upper boards collapsing due to a failed understructure. Available in 40*25mm and 40*30mm, they are suitable for both routine residential deck construction and the rigorous demands of heavy-duty public boardwalks, providing safe, enduring, and maintenance-free foundational support for any outdoor project.
WPC solid joists
Screws actually bite.
Solid wherever you cut it.
Ten years buried and still straight.
Rugged Polymer Shield
Covers the core 360 degrees.
More durable and safe.
Smoothly edged and barefoot friendly.
Hollow Structure
Durable with a solid profile.
Convenient for transportation.
Endures well, with super long service life.
Art Color Surface
Natural Grain Flow.
Unique Appearance.
Transitional Decking Installations.
Composite Decking
Inspiration
WPC solid joists are indispensable hidden load-bearing skeletons in outdoor decking systems, primarily used for foundational support where load-bearing capacity, moisture resistance, and rot resistance are highly required. They are widely applied in residential courtyard patios and balcony installations, public boardwalks and waterside platforms in parks and scenic areas, poolside and spa environments that are constantly damp, and outdoor flooring bases for high-traffic commercial spaces such as hotel plazas. Additionally, in the framing of outdoor wall cladding and fences, as well as in moisture-prone ground-floor courtyards and raised rooftop garden layers, solid joists provide exceptional screw-holding power and compressive strength. They fundamentally eliminate safety hazards such as understructure rot, termite damage, or structural collapse under stress, providing durable, stable, and maintenance-free foundational support for any outdoor project.
منتجات جديدة
