Lightweight easy to install hollow Co-extruded WPC decking
Product Summary
This engineering-grade layout introduces the lightweight, easy to install hollow Co-extruded WPC decking designed for high-rise balconies, expansive rooftop terraces, and commercial developments where structural weight limitations and rapid deployment are critical. Utilizing a scientifically optimized internal hollow matrix, it significantly reduces the profile dead-load without sacrificing mechanical load bearing capacity. This lightweight core is permanently wrapped in a 360-degree durable cap and paired with a concealed modular clip system. This overview directly addresses project challenges like heavy material logistics and time-consuming top-down screwing, delivering an ultra-efficient, structurally safe flooring solution.
Product Features
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Optimized Lightweight Engineering Structural Design
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Our hollow Co-extruded WPC decking utilizes internal structural chambers that remove unneeded material mass. This lightweight engineering reduces the dead-weight on high-rise balcony cantilevers and floating rooftop frames by up to 25% compared to solid alternatives, ensuring full compliance with structural safety codes while drastically cutting shipping and manual hauling logistics.
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Modular Hidden Fastener Clip System for Easy to Install Logistics
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Designed for rapid on-site logistics, the side-grooved hollow profile works seamlessly with specialized stainless steel hidden clips. This easy to install mechanism completely eliminates the need to pre-drill and screw directly through the board surface. It ensures automatic, uniform spacing between rows while providing a clean, screw-free premium aesthetic.
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360° Wrapped Protection with Internal Air Conduits
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While the dense, non-porous outer shield seals the core from rain and spills, the hollow chambers function as natural continuous ventilation tunnels. This hollow layout breaks up heat traps and allows ambient condensation underneath the deck to dry out fast, preventing moisture from pooling and maintaining excellent dimensional safety across all climates.
Technical Specification
| No. |
Test Item |
Test Standard |
Specification / Requirement |
| 1 |
Flexural Strength |
EN 15534-4 / ASTM D7032 |
≥ 25 MPa |
| 2 |
Modulus of Elasticity |
EN 15534-4 |
≥ 3,500 MPa |
| 3 |
Flexural Peak Load |
EN 15534-4 (Span: 350mm) |
≥ 3,300 N |
| 4 |
Bond/Shear Strength |
Internal / Third-party Test |
≥ 2.0 MPa (No delamination) |
| 5 |
Water Absorption (24h) |
EN 15534-1 |
≤ 0.5% |
| 6 |
Thickness Swelling |
EN 15534-4 |
≤ 1.5% |
| 7 |
UV/Weathering Resistance |
ISO 4892-2 (2000h) |
Grey Scale ≥ 4 ( No significant color fading)
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| 8 |
Fire Rating |
EN 13501-1 / ASTM E84 |
Class Bf1-s1 |
Certification
How to Install
Pre-Installation Rules
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Slope: Concrete base must have a 1% to 1.5% drainage slope. Never lay joists on pooling mud.
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Acclimatization: Lay Co-extruded planks flat on-site for 24 to 48 hours before cutting.
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Joist Spacing (Max): 350mm for Solid planks; 300mm for Hollow planks.
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Double-Joist Rule: Install parallel sister joists at butt joints. Each board end requires an independent clip and joist support.
Step-by-Step Installation
Step 1: Fix the Joists
Anchor the aluminum or WPC joists to the concrete foundation using stainless steel expansion screws according to the specified spans.
Step 2: Set the First Board
Lock specialized Starter Clips at the beginning edge of the joist framework, then slide the side-groove of the first Co-extruded plank firmly into place.
Step 3: Fasten with Hidden Clips
Insert modular Hidden Clips into the inner groove of the plank over every joist intersection. Fasten the screw with an impact driver, then slide the next board into place using a rubber mallet. This automatically locks a uniform 4-5mm lateral gap.
Step 4: Leave Expansion Gaps
Leave strict longitudinal gaps at butt joints and wall boundaries based on installation temperatures:
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Hot Weather (>30°C): 3-4mm gap.
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Mild Weather (15-29°C): 5-6mm gap.
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Cold Weather (<14°C): 7-8mm gap.
Step 5: Edge Finishing
Fix the final perimeter row. For Hollow profiles, seal all open chambers with matching Co-extruded Fascia Boards or end-caps to block insects and moisture.
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FAQ
Q1: Does a lightweight hollow Co-extruded deck have a shorter lifespan than a heavy solid deck?
A1: Not at all. The lifespan of a second-generation deck depends on its 360-degree polymer cap. Because our lightweight profile uses the exact same engineering-grade capped shield as our solid line, the core remains completely sealed away from UV rays, mold, and rot, guaranteeing a premium service life of over 25 to 30 years.
Q2: How does the easy to install clip system handle the structural wind-uplift on high-rise luxury balconies?
A2: Our hidden clips are manufactured from heavy-duty marine-grade stainless steel that locks into the side grooves with tight tolerances. This easy to install design distributes wind forces evenly along the entire framing network rather than concentrating stress on top-down screw heads, offering superior resistance against violent high-altitude wind gusts.
Q3: Can standard commercial carpentry tools be used to saw and cut this hollow profile during installation?
A3: Yes, the lightweight hollow layout makes it incredibly easy to install and easy to cut. You do not need any specialized commercial machinery; standard carpentry power tools like a miter saw with a fine-tooth carbide blade will create razor-sharp, clean cuts without fracturing the outer polymer protective shell.
Q4: Will moisture get trapped inside the hollow chambers and cause internal mold over time?
A4: No. During a professional installation, the open hollow ends at the deck perimeter are sealed with matching Co-extruded fascia boards or custom WPC end-caps. This ensures that while air can flow through the internal ventilation conduits to prevent dampness, horizontal driving rains and insects are blocked from entering.
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Lightweight Hollow Co Extruded WPC Deck Panel Easy To Install Images
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