Hardwood Marine Plywood Sheet – BS1088 Class 3 – PEFC – 2440×1220 mm (8×4′) – 12 mm
€79.95
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Pros and cons
Manufactured to BS 1088, the British Standard for marine plywood relied on by boat-builders worldwide
EN 335 Class 3 durability rating for full external weather exposure
PEFC certified; sustainably sourced timber from independently audited forests
Resists delamination and fungal attack; built for ship-building, walkways, external joinery and wet-area work
Needs stainless or hot-dip galvanised fixings; plain steel corrodes in the conditions the panel is built for
Cut edges expose unprotected core glue lines; seal all cut edges before installing in wet environments
Product specification
- Length
- 2440 mm
- Width
- 1220 mm
- Thickness
- 12 mm
- Coverage
- 2.98 m²
- Weight
- 24.3 kg
Hardwood Marine Plywood Sheet
Hardwood marine plywood is the panel you specify when failure isn’t an option. With durable hardwood face and core veneers and very few defects, it’s built to perform in humid and wet conditions over the long term, resisting the delamination and fungal attack that finish off ordinary plywood. At 12 mm, this is the everyday workhorse thickness for marine and exposed-environment construction. We stock it in our yard in Dublin, ready for fast delivery anywhere in Ireland.
Why BS 1088 marine plywood?
This panel is manufactured to BS 1088, the British Standard that has defined what counts as marine plywood for over fifty years. It’s the spec that boat-builders, shipyards, and architects rely on globally; if a panel is sold as BS 1088, the face veneer quality, the core construction, and the bond performance have all been built to a published standard rather than to the manufacturer’s own discretion. Class 3 is the durability rating under EN 335 for full external exposure to the weather, the highest service class wood-based panels are rated to.
The PEFC certification means the timber comes from sustainably managed forests audited under the Programme for the Endorsement of Forest Certification, the world’s largest forest certification system. So you’re getting a panel that’s verified to perform in the wet and verified to come from a responsible source, both of which increasingly matter on project specifications. You’ll see it across ship and boat construction and interior fit-out, trailer and van linings, external joinery, walkways, pontoons, wet-area floors, temporary structures, and anywhere a standard panel would eventually fail.
Working with the sheet
At 12 mm, work the sheet with a sharp TCT blade with a high tooth count for clean cross-cuts. Pre-drill before fixing close to an edge, and use stainless or hot-dip galvanised fixings throughout, because the conditions that suit marine ply also corrode plain steel. Seal all cut edges before installation; the face veneer carries the moisture protection across the panel, but a freshly cut edge exposes the core glue lines and needs protecting with a quality edge sealer or epoxy.
Store flat, off the ground, and protected from direct weather until you’re ready to install. Even marine ply lasts longer when it doesn’t sit in standing water during storage.
Finishing
For boat and exterior work, most of our customers seal the panel with an epoxy primer or marine-grade undercoat, then topcoat with a marine varnish or two-pack polyurethane for full UV and water protection. For interior wet-area work (van fit-outs, wet-room ceilings, walk-on flooring) a yacht varnish or hardwax oil with several coats works well. Avoid using ordinary household primers and paints, as they don’t have the flexibility or water resistance to keep up with the panel. Ask us if you’re unsure which finish to pair with your project, and we’ll point you to what works.