- Stock thickness: 4mm-25mm
- Stock size: 2500x1220mm in slit or pack quantity / 3100x1530mm in full pack quantity
- Special sizes up to 3100x1830mm
- 4mm-40mm thick (composites up to 100mm)
- Light in weight (average 500kg/m3)
- Supplied raw or coated with primer, melamine laminate, lacquer or paint
- Suitable for extreme moisture conditions
- Performance supported by Lloyd's of London approval
Overview
Okoume plywood is often known in the UK as "gaboon plywood" and is incorporated into a wide range of end-uses. It is regularly used in the manufacture of yachts and other vehicles where a lightweight plywood product is required that takes surface finishes well, or where a guaranteed exterior performance is a necessity.
Other exterior applications where gaboon/okoume plywood is regularly used include the manufacture of external window shutters, or other parts of buildings, such as external facades and claddings. It is also used in other applications such as furniture, musical instruments and packaging.
Because okoume takes paint and other surface coatings very well, it is often used to achieve high quality coloured or clear lacquered finishes. It is also available prelaminated with high quality films for further decoration or silk screen printing.
Winwood Products is a marine okoume plywood supplier offering the configurations / options shown below
Gaboon / Okoume marine plywood
- Lloyds of London Register Type Approved for marine applications
- Stock thickness: 4mm to 25mm
- Stock panel size 2500x1220mm
- To special order up to 40mm
- Panel sizes: 2500/3100x1220/1530mm & 3100x1830mm
- Can be supplied raw or precoated with primer, laminate, or special finishes
This high-quality marine plywood is Lloyds Register Type Approved and produced using veneers of okoume throughout.
Plywood of this nature is regularly used in the manufacture of boats & luxury yachts, exterior joinery, exterior cladding and toy & model making.
This product is most often ordered as Lloyd's Approved BS 1088 Okoume Marine Plywood, for use in the manufacture of boats and other marine vessels, or other applications where it will remain permanently wet.
Okoume throughout plywood is also available to special production at a lower nett price for specific end-uses without marine certification. This product is used for lower moisture areas where a good quality core & face is required, or for exterior applications such as fascias and soffits.
- Certification:
- Lloyds of London / NF Exterior CTB-X
- Stock sizes:
- 2500x1220mm from single sheets, some 3100x1530mm (full pallets only)
- Stock thickness:
- 4mm, 6mm, 9mm, 12mm, 15mm, 18mm, 25mm
(others to special production)
- 4mm, 6mm, 9mm, 12mm, 15mm, 18mm, 25mm
-
Class II (B) Okoume / Gaboon Face
Gaboon / Okoume faced plywood
- Sold in pallet quantities to special order
- To special order 6mm-40mm
- Panel sizes: 2500/3100x1220/1530mm & 3100x1830mm
- Can be supplied raw or precoated with primer, lacquer or special finishes
Okoume faced plywood is available on a core of long-grain okoume veneers alternating with another species for the crossgrain veneers (described as 'okoume combi plywood'), or with just the face in okoume on a core of 100% another species (called 'okoume twin plywood').
Typically, okoume is combined with lightweight poplar plywood and the resultant panel described as 'okoume/poplar combi plywood' or 'okoume/poplar twin plywood'.
Due to its lower cost and lighter weight, this contruction is used extensively in the manufacture of vehicles and structures where a lightweight panel is required.
Product Information
Standard thicknesses & typical weights
- 4mm =2.0 kg/m2
- 5mm =2.5 kg/m2
- 6mm =3.0 kg/m2
- 8mm =4.0 kg/m2
- 9mm =4.5 kg/m2
- 10mm =5.0 kg/m2
- 12mm =6.0 kg/m2
- 15mm =7.5 kg/m2
- 18mm =9.0 kg/m2
- 20mm =10.0 kg/m2
- 22mm =11.0 kg/m2
- 25mm =12.5 kg/m2
- 30mm =15.0 kg/m2
- 35mm =17.5 kg/m2
- 40mm =20.0 kg/m2
Standard panel sizes
- 2500x1220mm
- 3100x1220mm
- 2500x1530mm
- 3100x1530mm
- 3100x1830mm
Technical Details
- Standards
- Lloyds Register Type Approved marine plywood
- BS 1088
- CTBX
- Specification
- EN 636-3 - Fully exterior usage
- ≥ 6mm: EN 13986 CE 2+ for structural use
- < 6mm: EN 13986 CE NS for non-structural use
- Bonding
- EN 314-2 Class 3 - High moisture resistance
- EN 13986: E1
- US EPA TSCA Title VI
- CARB ULEF NAUF
- Tolerances
- EN 315
- Face grades
- EN 635-2
- Fire reaction
- ≥ 9mm: EN 13501-1 Class D-s2, d0
- < 9mm: EN 13501-1 Class E
- Heat conductivity
- λ = 0,13 W/m.k
Bending Strength (EN 636)
- 6mm: F30/10, E40/15
- 9mm: F25/20, E30/25
- 12mm: F20/25, E30/25
- 15mm: F20/20, E25/30
- 18mm: F15/25, E25/30
- 22mm: F15/20, E25/30
- 25mm: F15/20, E25/30
- 30mm: F15/20, E25/30
- 35mm: F10/20, E20/30
- 40mm: F10/20, E20/30
Quality according to BS 1088 (summary)
| Outer veneer | Inner veneer | |
|---|---|---|
| Pin knots | Max. 6/m2 of panel surface | No limit |
| Closed splits | Max 2 per metre width with a total length of 200 mm | No limit |
| Open splits | Not permitted | Max 1 split <0.5mm wide on any panel edge |
| Worm holes < 1.5mm dia | Up to 2/m2 permitted. Holes in plane of veneer not permitted | Permitted provided they do not produce voids |
| Worm holes > 1.5mm dia | Not permitted | Not permitted |
| Variation in colour | Low contrast permitted if free from fungal decay | Permitted, if free from fungal decay |
| Minimum distance between edge joints on face veneers | Peeled veneers = 300mm Sliced veneers = 100 mm |
No limit |
| End joints | Not permitted | Not permitted |
| Compression failure | Not permitted | Not permitted |
| Knots other than pin knots | Not permitted | Not permitted |
| Fungal decay | Not permitted | Not permitted |
| Repairs | Not permitted | Properly made and tightly fitted glued patches with their grain aligned with the grain of the veneer and having a maximum dimension of 60mm permitted up to 3/m2 |
