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12mm Marine Plywood Sheets

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464 reviews
Rated 4.7 out of 5 stars
5 stars
(391)
4 stars
(41)
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(6)
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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: 30.01 g

Free delivery when you spend £250+

Estimated delivery: from Check My Postcode

Collect from BN5 9XR: -

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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 / 5 464 reviews
Mick Haley, 22nd June
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Supplied 18mm instead of 12mm as ordered
Verified, Collected by Cut My
Stevie B, 20th June
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Very good quality ply for shelves including lacquer. Saves a lot of time and equipment for the home DIYer.
Verified, Collected by Cut My
R Phillips, 20th June
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It’s a piece of plywood.
Verified, Collected by Cut My
Gerry, 19th June
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Correct size, delivered as promised.. perfect
Verified, Collected by Cut My
Mr George Hibberd, 19th June
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Exact size. There was a short delay on delivery but I was kept fully informed. All good.
Verified, Collected by Cut My
Engin ÇERİ, 18th June
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Easy to buy
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J E Woodcraft, 18th June
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I ordered melamine faced plywood cut to shape for a desk top. Melamine MDF was supplied and had been cut to the specifications. It was also slightly damaged. The MDF is priced at about 50% of the cost I paid for the plywood. It's 13 days since my initial complaint and I am still waiting for ANY non-automated reply despite opening a new complaint yesterday and supplying photographs. There is no way to rouse a human response.
Verified, Collected by Cut My
Gavin G, 17th June
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The quality isnt BB, there are multiple plugs on one side, and burn marks on the other side. We contacted the shop about this but never got a response
Verified, Collected by Cut My
Susie, 17th June
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Perfect base for my cushioned seat
Verified, Collected by Cut My
Paul HOUGHTON, 13th June
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Expensive anyhow but I needed next day delivery (so paid even more) … arrived 4 days later after the job was completed. Only after leaving a negative review did they. Intact me (despite emails previously) … but just to offer me 10% off my next order!!! I can assure you, there will be no ‘next order’ - truly awful
Verified, Collected by Cut My
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