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Solid timber panels

European Oak - 'Triply' Three-Layer Panels

European Oak 'Triply' three-layer panel
  • Stock item / some to special order
  • 20mm, 26mm (others by agreement)
  • In stock from 1000x1250mm up to 3000x1250mm
  • Non-stock items typically available within 2-3 weeks in minimum 5 sheets per item
  • Bulk packages of mini-bundles (10) and pallets (20)
  • Formaldehyde-free D3 bonded for limited high moisture conditions


Winwood Products is a supplier of the following 'Triply' three-layer panels made from European Oak, Rustic Oak, and 'Eco-Oak':

These three-layer panels are constructed from 5mm thick, full-length European Oak, Rustic Oak or Eco-Oak faces bonded either side of a cross-banded 10mm or 16mm finger jointed oak lumber core, offering a product that is more reliable and much more dimensionally-stable than oak lumber due to its construction & layup, and with a generally higher quality surface finish.

The European oak strips making up the panel core and faces are bonded together with formaldehyde-free D3 water resistant glue, The faces are made from strips of random width ranging 50-140mm and are calibrated to 80 grit before the panel is protected with clear film wrapping.

Eco-Oak Triply includes sapwood & knots to allow as much of the log used as possible, thus offering a more eco-friendly and economically-priced panel. Insect marks are allowed to the reverse face to enable the maximum amount of oak to be utilised to achieve the most competitive price - and the lowest cost to the environment!

All panels can be supplied as produced, or cut or machined to pattern, and can be supplied prefinished with lacquer, oil, wax or special finishes as required. (See Adze for an indication of what is possible with these panels)

Please click on the main European Oak page for details of the wood

Technical details

  • Construction:
    • Full length 5mm thick European Oak staves of random width (50-140mm wide) bonded to a cross-banded finger jointed core of the same species
  • Stock items:
    • European Oak Triply:
    • 20mm 1000x1250mm
    • 20mm 1250x1250mm
    • 20mm 1650x1250mm
    • 20mm 1900x1250mm
    • 20mm 2050x1250mm
    • 20mm 2300x1250mm
    • 20mm 2500x1250mm
    • 20mm 3000x1250mm
    • 26mm 2500x1250mm
    • European Eco-Oak Triply:
    • 20mm 2050x1250mm
    • 20mm 2300x1250mm
    • 20mm 2500x1250mm
  • Standard thickness:
    • 20mm (5mm/10mm/5mm)
    • 26mm (5mm/16mm/5mm)
    • Others by arrangement
  • Standard sizes:
    • 810x1250mm
    • 1000x1250mm *** 20mm in stock **
    • 1250x1250mm *** 20mm in stock **
    • 1650x1250mm *** 20mm in stock **
    • 1900x1250mm *** 20mm in stock ***
    • 2050x1250mm *** 20mm in stock **
    • 2300x1250mm *** 20mm in stock ***
    • 2500x1250mm *** stock item ***
    • 2750x1250mm
    • 3000x1250mm *** 20mm in stock ***
  • Non-stock items:
    • Can be specially ordered in minimum quantity of 5 per item
  • Special sizes:
    • In principle, non-standard panel size or thickness can be produced by arrangement up to the maximum length stated above, subject to minimum production quantity
  • Calibration:
    • Final sanding with 80 grit
  • Packaging:
    • Faces individually protected with shrinkwrapping
  • Tolerances:
    • Length/width: +5mm/-3mm
    • Thickness: ±0.2mm
    • (Others by arrangement)
  • Face grades:
    • A face / B reverse
    • Other grading by arrangement
      Each panel is unique. Strips of various grain pattern used to construct a face are selected to be similar in colour in principle, but it is not possible to guarantee this due to natural variances within the species chosen
  • Bonding Quality:
    • D3 - Limited high moisture applications
    • Formaldehyde (CAS # 50-00-0) is not intentionally used in the glue. However, trace levels (< 0.02%) may be present as a result of the specific characteristics of the raw materials and/or of the manufacturing process
  • Other features:
    • Other woods can be incorporated into the construction of the panel to achieve a decorative or contrasting effect

Storage & processing

  • Storage:
    • The panels should remain within their protective film until ready for conversion into their finished sizes
    • Immediately upon receipt, the panels must be stacked directly on top of each other and fully supported on perfectly flat, uniform supports - the top panel should be fully covered with chipboard or MDF, and all edges left allowed to receive good air circulation. This can be done with the help of lining strips/slats
    • The panels must then be covered carefully to ensure temperatures and air humidity are maintained from receipt of the panels right up until further processing
    • Air humidity should remain between 28%-58% and a temperature range of 17-24°C in order to maintain flatness. (Higher air humidity will lead the panels to take up moisture and swell, while lower air humidity will cause them to give up their inner cell moisture and shrink)
    • NB: Extremes outside the above ranges risk damage to the panels, so it is vital to ventilate the storage to ensure the conditions needed.
  • Processing:
    • After cutting the panels to their final dimension and before final processing, it is strongly recommended that the panels are left to acclimatise for a few days, again stacked one panel directly one on another (still in their clear film if possible) and a top panel be covered with chipboard, MDF or similar lower humidity product. If one or more of the above cannot be followed it is safest to keep the panels as supplied, with the film intact, and stored carefully on a horizontal surface covered in full length and stacked one panel directly on another and covered on top with some chip board or similar (with lower humidity). You should keep them stored this way until actually processing them further (sawing…). Important: make sure you process panels simultaneously from both sides (sanding, brushing, lacquering / oiling) and the thickness of the outer layers must be the same after processing, to minimize the chance of deflection