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12mm Marine Plywood Sheets

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861 reviews
Rated 4.7 out of 5 stars
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1 star
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Our 12mm marine plywood sheet is purpose-built for enduring external environments and moisture-rich spaces. Its robustness caters to storage, wall constructions, and indoor vehicle zones. With resistance to fungi and delamination, our superior BB/BB grade marine plywood ensures reliability in gardens, bathrooms, and parks.

Please note that the colour of your marine plywood may differ slightly from the images as we buy from multiple suppliers.

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mm
Min: 100mmMax: 2440mm
mm
Min: 50mmMax: 1220mm

Approximate Weight: 42.67 g

Free delivery when you spend £250+

Estimated delivery: from Check My Postcode

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Marine Ply Board Specifications

Material Plywood
Finish Marine
Thickness 12mm
Maximum Sheet Size 2420mm x 1220mm
Minimum Sheet Size 100mm x 50mm
Plywood Grade BB/BB
Manufacturers Tolerances +/- 10 % plus 0.4mm (e.g. 5mm cast sheet could vary from 4.1mm to 5.9mm)
Cutting Tolerances +/- 1mm

Frequently Asked Questions

What thickness of hardwood plywood is suitable for my project?

When determining the appropriate hardwood plywood thickness, it is essential to consider the specific application to ensure optimal performance.

For intricate crafts and hobby projects, a thinner option like 4mm plywood is well-suited. If you're working on cabinet backs, a 6mm plywood sheet provides the necessary stability. For furniture construction and shelving projects, choose between 9mm or 12mm plywood, depending on the specific load-bearing requirements. In applications where durability is paramount, such as flooring, subfloors, or heavy-duty uses, it is advisable to opt for a sturdier option, like 18mm plywood.

Is marine plywood waterproof?

While marine plywood is not entirely waterproof, it features a negligible core gap to minimise the likelihood of water getting trapped between the layers. This design ensures a strong and stable glue bond, providing extra strength.

How does marine plywood differ from regular plywood?

In comparison to standard plywood, marine plywood utilizes higher quality wood, incorporates more layers, employs a more durable adhesive, and is specifically designed to resist delamination and warping when exposed to moisture over time. Regular plywood is not suitable for prolonged wet conditions.

What is the recommended method for sealing marine plywood?

Given that marine plywood is often used in or around water, it's crucial to treat every surface with a sealant. A waterproof penetrating epoxy is ideal, as it penetrates deep into the wood, dries transparent, and requires less maintenance than other sealants.

Do I need marine-grade plywood?

We recommend using marine-grade plywood in any instance where the sheet will be near water.

How long does marine plywood last?

With proper maintenance, marine plywood can last over 25 years, even with constant water exposure. Sealing and painting contribute to extending its lifespan.

Is marine plywood treated with chemicals?

No, marine plywood is not chemically treated. Its water resistance is achieved through the use of durable face and core veneers, resistant adhesives, and multiple laminated layers.

Delivery depends on the size of your order

Reviews

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4.7 / 5 861 reviews
Mr Brian McCarthy, 16th September
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I have used Cut My a few times now and always been very happy with the speedy service and quality. On this order I have to say I was a little disappointed to find one side heavily marked. I understand that wood is a natural product but I ordered Birch plywood and paid a premium for top quality product. Fortunately I could turn it over to hide the marks but I could have been building a furniture product where it turning it over would not be possible. I hate complaining but you did ask!!
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Budda, 15th September
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Waterproof plywood - but came with small blisters and a section was delaminating.
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David, 14th September
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Just the job! Good quality plywood cut as required and delivered safely and promptly. I'm well satisfied.
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Mr David Graham, 13th September
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Great product and service
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Dougie, 13th September
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Excellent service and product - would definitely recommend.
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Adrian Webb, 10th September
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The items are of great quality and the price is also a big draw.
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Len, 10th September
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Great product and service. Friendly ontime delivery. Many thanks
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John Thompson, 9th September
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Good product fast response and delivery.
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Mr Rob Squibb, 8th September
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Great product cut to the exact dimensions and a quick delivery
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Pamela, 8th September
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Cut exactly to the size I specified saved quite some time and effort. Not at all expensive
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