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12mm Marine Plywood Sheets

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750 reviews
Rated 4.7 out of 5 stars
5 stars
(624)
4 stars
(71)
3 stars
(14)
2 stars
(8)
1 star
(33)
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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 / 5 750 reviews
Annemarie O'Connor, 4th June
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The quality of the product was brilliant and I had a great choice of depth and type of ply. Very pleased with the choice and the product I eventually chose.
Verified, Collected by Cut My
Susan Boothby, 3rd June
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It has been installed and appears to be working as expected.
Verified, Collected by Cut My
Robin Theobald, 3rd June
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The product was upto expectations and has now been used. Good service
Verified, Collected by Cut My
Alan Turner, 3rd June
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I needed to replace the tongue & groove on the doors to my summerhouse but was reluctant to fit anymore as it is south facing and the chances are the t & g would expand and start to pull away from the frame again. I chose this marine plywood so I could use my circular saw to create grooves to make it look like t & g. In general it has come out quite well, the first one was best but the other two are ok. Just need to stain & fit.
Verified, Collected by Cut My
William Baldwin, 1st June
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Good surface finish, resistant to water immersion. Too soon to know how durable it will be.
Verified, Collected by Cut My
Graham, 31st May
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It fits!
Verified, Collected by Cut My
Michael Withall, 29th May
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Very good service plywood was cut to my exact specifications
Verified, Collected by Cut My
Jonathan Ralston, 27th May
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Perfectly cut for my shelving. Great quality
Verified, Collected by Cut My
Christine Straw, 27th May
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Very happy with my order. I have Purchased plywood from this company before. I would recommend them.
Verified, Collected by Cut My
customer, 26th May
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This was cut for me to make a replacement shed floor. Its perfect - fitted like a glove and is sturdy. What more do I need really! Would use MyCut again if I needed a custom cut piece of wood.
Verified, Collected by Cut My
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