🏗️ Structural Certification: EN 312 Class P5 & EN 12871 / EN 13986 CE Certified 🚢 Direct Port Shipping: FCL Shipments to UK, Benelux, Germany, Australia & North America
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Heavy-Duty Structural Deck Engineering

P5 Chipboard for Mezzanine Flooring & Structural Decks

High-load, acoustic-engineered 22mm and 38mm P5 green-core panels with 4-sided Tongue & Groove (T&G) interlocking profiles. Precision-manufactured for warehouse mezzanine tiers, industrial logistics platforms, and modular residential timber construction under EN 312 P5 and EN 12871.

⚡ Quick Engineering Summary: P5 Mezzanine Structural Decking

Industrial Mezzanine & Structural Flooring demands engineered timber panels capable of sustaining heavy static shelving racking, pallet-jack point loads, and dynamic footfall vibration without deflection failure or joint squeaking. Cuzi Particle Board manufactures 22mm and 38mm P5 moisture-resistant particle board panels engineered with CNC precision 4-sided tongue-and-groove (T&G) interlocking joints. Formulated with melamine-urea-formaldehyde (MUF) resin and paraffin emulsion under cyclic EN 321 V313 protocol, our flooring panels deliver uniform design loads up to 5.0 kN/m² across 600mm joists and point loads exceeding 4.5 kN under EN 1195.

Core Panel Thicknesses: 22 mm (Light-to-Medium Mezzanine & Residential) & 38 mm (Heavy Commercial / Warehouse Deck)
Interlocking Edge Geometry: 4-Sided Precision Asymmetric Tongue-and-Groove (T&G) Profile (±0.25 mm Fit)
Standard Format: 2400 × 600 mm (Layed Face Dimension; 2-Worker Safe Handling Format)
Uniform Design Load (UDL): Up to 5.0 kN/m² over 600 mm Steel Joists (EN 12871 Service Class 2)
Concentrated Point Load: Category C/D Heavy Commercial ≥ 3.0 kN (22mm) / ≥ 4.5 kN (38mm) (EN 1195)
Moisture Cyclic Stability: EN 321 V313 Cycle Compliant (Residual IB ≥ 0.16 N/mm², 24h Swell ≤ 9.5%)

Heavy-Duty Point Load Support & Monolithic Diaphragm Mechanics

Warehouse mezzanine platforms, distribution center pick towers, and modular steel-frame buildings endure rigorous dynamic loads, rolling manual pallet jacks, and high-density archive shelving. Inferior subfloor panels suffer from tongue fracture, excessive mid-span sag, and persistent squeaking when subjected to concentrated foot traffic.

Cuzi Particle Board P5 structural flooring is produced on a 42-meter continuous hot press with automated high-density surface consolidation (core density: 660–680 kg/m³, outer face skin density: 720–750 kg/m³). This three-layer gradient provides an elevated Modulus of Elasticity (MOE ≥ 2,400 N/mm² for 22mm; MOE ≥ 2,300 N/mm² for 38mm) that resists localized crushing under rolling nylon casters while forming a rigid shear diaphragm across steel secondary joists.

  • ✓ EN 12871 Floor Performance Certified: Full mechanical qualification for point loads, impact soft body resistance (30 kg spheroconical bag drop), and long-term creep deflection under European Service Class 2.
  • ✓ 4-Sided CNC Profiled T&G: Engineered male tongue and female groove with a built-in glue reservoir groove, ensuring seamless load transfer between adjacent panels without unsupported edges.
  • ✓ EN 321 Cyclic V313 Tested: Formulated with hydrophobic melamine-fortified MUF resins to withstand job-site weather exposure and accidental rainfall prior to building envelope closure.
  • ✓ Sanded High-Traction Surface: Calibrated with 80-grit diamond sanders to deliver a consistent slip-resistant working surface for site installation crews.
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Particle board flooring panels laid over steel mezzanine joists

Standard Mezzanine Decking Parameters

Panel Dimensions:2400 × 600 mm (Layed Face Coverage)
Nominal Thicknesses:18 mm, 22 mm, and 38 mm
Bending Strength (MOR):≥ 16.5 N/mm² (22mm) / ≥ 14.0 N/mm² (38mm)
Modulus of Elasticity (MOE):≥ 2,400 N/mm² (22mm) / ≥ 2,300 N/mm² (38mm)
Internal Bond (IB):≥ 0.40 N/mm² (Dry) / ≥ 0.16 N/mm² (V313)
24h Thickness Swelling:≤ 9.5% (EN 317)
Edge Milling:4-Sided Interlocking T&G with Expansion Shoulder
Packaging & Bundling:Steel-Strapped Pallets with Edge Corner Protectors
Structural Performance Engineering

Load-Span & Deflection Engineering Matrix

Certified mechanical design capacities under EN 12871, EN 1995-1-1 (Eurocode 5), and EN 1195 concentrated point load testing across cold-formed steel C-sections and timber joists.

Panel Grade & Nominal Thickness Target Density (kg/m³) Steel Joist Spacing (Centers) Uniform Design Load (UDL) Concentrated Point Load (EN 1195) Deflection Limit (Serviceability) Typical Mezzanine & Flooring Application
18 mm P5 T&G Green Core 690 ± 15 400 mm c/c (16 in) 3.5 kN/m² (~73 psf) 2.2 kN (50 × 50 mm foot) < L / 360 (≤ 1.1 mm) Residential timber frame floors, modular bathroom pods, domestic loft conversions
22 mm P5 T&G Green Core (Standard) 680 ± 15 500 mm c/c (20 in) 5.0 kN/m² (~104 psf) 3.5 kN (50 × 50 mm foot) < L / 360 (≤ 1.38 mm) Commercial office mezzanine floors, retail storage decks, cleanroom platforms
22 mm P5 T&G Green Core (Standard) 680 ± 15 600 mm c/c (24 in) 4.2 kN/m² (~87 psf) 3.0 kN (50 × 50 mm foot) < L / 300 (≤ 2.0 mm) Standard industrial mezzanines, self-storage facilities, general light warehousing
38 mm P5 T&G Industrial Heavy-Duty 670 ± 15 800 mm c/c (31.5 in) 6.5 kN/m² (~135 psf) 4.5 kN (50 × 50 mm foot) < L / 360 (≤ 2.2 mm) Warehouse distribution pick towers, heavy parts storage, hand-pallet truck corridors
38 mm P5 T&G Industrial Heavy-Duty 670 ± 15 1000 mm c/c (39.4 in) 4.8 kN/m² (~100 psf) 4.0 kN (50 × 50 mm foot) < L / 250 (≤ 4.0 mm) Wide-span steel structural frameworks, multi-tier racking walkways, plant rooms

Concentrated Wheel & Point Loads

Under EN 1195 point load protocols, Cuzi 22mm panels withstand concentrated loads over a 50 × 50 mm square steel indenter up to 3.0 kN without face punch-through. For rolling dynamic wheel loads from 1,000 kg manual hand-pallet trucks, our 38mm panels distribute tire pressure smoothly without edge crushing.

4-Sided Asymmetric Tongue & Groove

Precision profile tooling cuts a micro-tapered tongue and recessed glue well. When combined with polyurethane adhesive, the joint achieves over 85% shear transfer efficiency across neighboring panels, preventing independent deflection between boards and eliminating joint ridge lines.

Creep & Service Class 2 Qualification

In unheated industrial warehouses with relative humidity up to 85% (Service Class 2), standard P2 chipboard exhibits severe viscoelastic creep under permanent dead load. Cuzi P5 boards maintain a creep deformation factor (kdef ≤ 1.50) compliant with Eurocode 5 design standards.

Functional Surface Engineering

Surface Options for Industrial & Commercial Platforms

Tailored surface laminations and coatings engineered for warehouse traction, electrostatic discharge (ESD) safety, and commercial fire regulations.

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Raw Sanded P5 Natural

Calibrated with 80-grit precision sanding. Economical, high-friction timber deck ready for direct foot traffic, carpet tiles, or luxury vinyl tile (LVT) floor coverings.

  • Sanding Tolerance: ±0.2 mm across panel face
  • Ideal for domestic lofts and dry storage decks
  • Euroclass Dfl-s1 fire reaction (EN 13501-1)
🛡️

Wire-Mesh Anti-Slip Resin Foil

Hot-press laminated with 220 g/m² phenolic or melamine wire-mesh textured overlay. Engineered for high-traffic industrial mezzanines requiring oil and slip resistance.

  • Slip Resistance Rating: DIN 51130 Class R10 / R11
  • Taber Abrasion Resistance: ≥ 3,500 revolutions
  • Resistant to machine oils, lubricants, and light acids
🔥

Class Bfl-s1 Fire Retardant Deck

Manufactured with mineral fire retardant core treatment or bonded with bottom-face fire-rated aluminum foil backing for industrial mezzanine building codes.

  • Reaction to Fire: Euroclass Bfl-s1 (EN 13501-1)
  • Bottom surface foil reflects heat & retards flame spread
  • Zero toxic halogen emissions during combustion
⚡

ESD Conductive Overlay Deck

Laminated with electrostatic-dissipative high-pressure melamine overlay engineered for electronics manufacturing mezzanines and automated server pick towers.

  • Surface Resistivity: 106 to 109 Ohms (IEC 61340)
  • Prevents static shock to automated robotics
  • Integrated copper grounding tape compatible
Site Engineering Best Practices

Step-by-Step Installation & Fastening Engineering Protocol

Follow European Flooring Federation and TRADA installation guidelines to guarantee zero squeaking, structural diaphragm integrity, and 25-year design service life.

01. Joist Verification & Layout

Verify steel C-section or timber joist centers (typically 600mm). Check top flange levelness (tolerance ≤ ±3mm across 3 meters). Panels must always be laid with their long axis perpendicular to joists. Stagger short-end butt joints across rows by at least 600mm.

02. D4 Polyurethane Tongue Gluing

Apply a continuous 3-4mm bead of solvent-free D4 polyurethane adhesive inside the female groove before sliding panels together. Ensure squeeze-out along the entire joint seam to guarantee 100% moisture sealing and eliminate board-on-board friction squeaking.

03. Wing-Tipped Screw Fastening

Use 4.2 × 45mm (for 22mm board) or 4.8 × 65mm (for 38mm board) self-drilling countersunk wing-tipped screws. Space screws at 200mm centers along perimeter edges (min. 15mm from board edge) and 300mm centers along intermediate joists. Drive heads 1.5mm below panel surface.

04. Perimeter Expansion Clearance

Provide a mandatory expansion gap of at least 10mm to 15mm (or 2mm per linear meter of continuous run) against all perimeter masonry walls, steel columns, and stairwell trimmers. On continuous mezzanine decks exceeding 15 meters, incorporate a 15mm mid-floor movement joint.

⚠️ Technical Installation Rule: Eliminating Floor Creak and Squeaks

Over 90% of floor squeaking complaints on industrial mezzanine platforms result from unglued tongue-and-groove joints or nail movement under cyclic foot traffic. Using countersunk ribbed screws and D4 waterproof polyurethane glue in the interlocking joint creates a monolithic structural diaphragm that prevents relative vertical displacement under dynamic rolling wheel loads.

Factory Wholesale Logistics

40ft High Cube Container Loading & Pallet Specifications

Optimized export packing engineered to prevent edge damage to tongue-and-groove profiles during intermodal sea freight and container handling.

Panel Format & Thickness Panels per Pallet Pallets per 40'HQ Total Panels in 40'HQ Total Floor Area (m² / sq ft) Payload Volume Gross Weight (MT)
2400 × 600 mm × 18 mm T&G 50 pcs / skid 28 pallets 1,400 panels 2,016 m² (21,700 sq ft) 36.29 m³ ~25.8 MT
2400 × 600 mm × 22 mm T&G (Standard) 42 pcs / skid 28 pallets 1,176 panels 1,693 m² (18,223 sq ft) 37.25 m³ ~26.2 MT
2400 × 600 mm × 38 mm T&G (Heavy) 24 pcs / skid 28 pallets 672 panels 967 m² (10,408 sq ft) 36.75 m³ ~25.5 MT
2440 × 1220 mm × 22 mm Square Edge 36 pcs / skid 12 jumbo skids 432 panels 1,285 m² (13,830 sq ft) 28.27 m³ ~20.0 MT

T&G Edge Protection Packaging

The vulnerable male tongue and female groove profiles are protected with heavy 4.0mm thick solid-fiberboard perimeter edge guards. Pallets are wrapped in 6-mil waterproof PE stretch film with heat-sealed top sheets to prevent container moisture condensation (container sweat).

Four-Way Forklift Entry Skids

Bundles rest on heat-treated solid timber skids (ISPM 15 compliant for international customs) with 90mm forklift tine clearance. Designed for efficient side-unloading from curtain-sided trailers or end-destuffing from standard 40ft High Cube sea shipping containers.

Commercial & Engineering Q&A

Frequently Asked Questions (B2B Buyer FAQ)

Direct answers on structural engineering criteria, joist deflection limits, adhesive protocols, and international container procurement.

22mm P5 T&G panels support uniform distributed design loads (UDL) of 5.0 kN/m² and concentrated point loads of 3.0 kN over steel beam centers spaced at 600mm under EN 1195 and EN 12871. Heavy-duty 38mm P5 panels support point loads up to 4.5 kN to 6.0 kN and wheel loads from manual pallet jacks up to 1,000 kg over joist centers of 800mm to 1000mm in commercial warehouse platforms.

The maximum recommended steel C-section joist or timber joist span for 22mm P5 panels is 600mm center-to-center. For heavy office storage, 400mm or 500mm centers reduce deflection to under L/360. For 38mm P5 industrial decking, steel joist centers are commonly spaced at 800mm to 1000mm. Panels must always be laid perpendicular to joist lines with short end joints staggered across neighboring rows.

To eliminate squeaking and create a monolithic structural diaphragm, apply a continuous 3-4mm bead of D4 waterproof polyurethane adhesive (or solvent-free PVAc D3/D4) into the bottom internal shoulder of the female groove before sliding the tongue fully home. Fasten panels to cold-formed steel joists using countersunk self-drilling wing-tipped screws (4.2 × 45mm for 22mm boards) spaced at 200mm centers around the perimeter and 300mm centers along intermediate joists.

Standard raw P5 flooring is certified to Euroclass Dfl-s1 under EN 13501-1 for flooring reaction to fire. For projects requiring enhanced fire safety or high-traction slip resistance, Cuzi Particle Board manufactures panels with Class Bfl-s1 fire retardant treatment and optional high-density wear foils or textured wire-mesh resin top overlays certified to slip resistance Class R10/R11 (DIN 51130).

A perimeter expansion gap of at least 10mm to 15mm (or 2mm per meter of continuous floor run, whichever is greater) must be maintained against all perimeter walls, steel stanchions, stairwell trimmers, and structural columns. For large industrial decks exceeding 15 meters in length, intermediate expansion joints of 15mm must be incorporated and covered with aluminum threshold plates.

While OSB/3 offers high tensile strand strength, Cuzi 22mm and 38mm P5 particle board provides superior surface smoothness, uniform density (680-720 kg/m³), and tighter machining tolerances on the tongue-and-groove profile (±0.25mm), preventing surface telegraphing under thin vinyl flooring or epoxy coatings. Additionally, 38mm P5 particle board delivers exceptional concentrated rolling-wheel resistance that resists top-flange strand delamination under heavy nylon pallet-truck wheels.

Cuzi P5 flooring complies with the rigorous EN 321 Option 1 (V313 cyclic test) and EN 312 Class P5 moisture criteria. The test subjects panels to 3 full cycles of 3-day water immersion at 20°C, 1-day deep freezing at -12°C, and 3-day oven baking at 70°C. Cuzi P5 retains internal bond strength greater than 0.16 N/mm² and maintains 24-hour thickness swelling below 9.5% (EN 317).

For standard 2400 × 600 mm flooring panels: 22mm P5 T&G yields 1,176 panels per 40ft HQ container (28 steel-strapped bundles of 42 panels each, totaling 1,693 m² / 37.25 m³ and ~26.2 metric tons). For 38mm P5 T&G industrial decking, a 40ft HQ holds approximately 680 to 720 panels (~26.5 MT maximum container payload), protected by 100% waterproof stretch wrap and heavy bottom skids.

Source Structural P5 Mezzanine Flooring Direct from Mill

Contact our commercial structural timber team for custom tongue-and-groove profiles, fire-retardant Class Bfl-s1 treatments, and full container CIF quotations to your destination port.

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