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12mm Marine Plywood Sheets

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383 reviews
Rated 4.7 out of 5 stars
5 stars
(325)
4 stars
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3 stars
(6)
2 stars
(5)
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: 30.01 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 / 5 383 reviews
John Carter, 18th March
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Excellent service. Easy to order and delivered when promised.
Verified, Collected by Cut My
Repeat Customer, 16th March
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Good quality birch ply. No defects, lovely grain and no annoying gaps between the plys. Will buy again.
Verified, Collected by Cut My
Arjun Khull, 16th March
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Amazing quick delivery thank you!
Verified, Collected by Cut My
Mr/Mrs Martin, 16th March
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Marine ply ... was lighter than older stuff I was replacing but sufficient for the job.
Verified, Collected by Cut My
Patrick, 14th March
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Accurately cut and packaged well .Reasonable cost, Thank you
Verified, Collected by Cut My
Craig Welch, 13th March
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PERFECT PERFECT
Verified, Collected by Cut My
Mr Brough, 13th March
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Great service
Verified, Collected by Cut My
Julie Salisbury, 12th March
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Exactly what I wanted
Verified, Collected by Cut My
Chris Agg, 12th March
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Great to find them on the door stop and service was excellent
Verified, Collected by Cut My
Customer, 12th March
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Excellent service
Verified, Collected by Cut My
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