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25mm Marine Plywood Sheets

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496 reviews
Rated 4.7 out of 5 stars
5 stars
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1 star
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Our 25mm marine plywood is engineered to endure in damp and humid environments. With its rugged construction, our BB/BB grade plywood provides exceptional performance for outdoor structures, boatbuilding, trailer beds, docks, and other projects exposed to moisture.

Order your plywood cut-to-size and benefit from precision cutting techniques for excellent accuracy. Our fast processing and delivery ensure you get your custom marine plywood sheets when you need it.

For marine and damp environments, choose our 25mm thickness for maximum moisture resistance and lifelong durability.

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

Approximate Weight: 88.89 g

Free delivery when you spend £250+

Estimated delivery: from Check My Postcode

Collect from BN5 9XR: -

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Key Features

The Strength and Durability

25mm marine plywood is engineered for superior performance in humid, wet environments. The thick 25mm construction provides exceptional strength and moisture resistance, making it ideal for boatbuilding, outdoor structures, docks, trailer beds, and other heavy-duty applications.

Built to Resist Warping and Rotting

Unlike standard plywood, marine plywood retains its structural integrity when exposed to dampness over time. Its durable laminated hardwood veneers prevent swelling, cracking, and delamination.

Easy to Work With

25mm marine plywood can be cut and machined with standard power tools for DIY projects. The affordable cost provides a high-quality material without breaking your budget.

Applications

The 25mm thickness offers pronounced stability perfect for:

  • Concrete forms
  • Flooring and roofing
  • Storage sheds
  • Shelving and workbenches
  • Exterior structures

For long-lasting performance in wet environments, choose 25mm marine plywood. Be sure to seal edges when using outdoors. Contact us to order your custom-cut marine plywood today.

We also offer birch plywood, hardwood plywood and softwood plywood.

Marine Ply Board Specifications

Material Plywood
Finish Marine
Thickness 25mm
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 plywood do I need?

When deciding on the appropriate hardwood plywood thickness, consider the specific application to ensure optimal performance.

  • For intricate crafts and hobby projects, a thinner option, such as 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, opt for either 9mm or 12mm plywood, depending on the specific load-bearing requirements.
  • When durability is paramount, especially in applications like flooring, subfloors, or heavy-duty uses, it is advisable to select a sturdier option such as 18mm plywood.

Is marine plywood waterproof?

Marine plywood is not waterproof, however, it has a negligible core gap so that the likelihood of water getting trapped between the layers is minimised. This provides a strong and stable glue bond for extra strength.

How is marine plywood different from regular plywood?

Compared to standard plywood, marine plywood uses higher quality wood, more layers, has a more durable adhesive, and is designed to resist delaminating and warping when exposed to moisture over time. Regular plywood is not suitable for prolonged wet conditions.

What is the best way to seal marine plywood?

Since marine plywood is typically used around or in water, you’ll need to treat every surface of the wood with sealant. You can find a good waterproof penetrating epoxy to be ideal as it works deep into the wood, dries transparent, and requires less maintenance than other types of sealant.

Do you need marine-grade plywood?

We recommend marine-grade plywood around any instance where your sheet is going to be near water.

How long does marine plywood last?

When properly maintained, marine plywood can last over 25 years even with constant water exposure. Also, proper sealing and painting helps to extend its lifespan.

Is marine plywood treated with chemicals?

No, marine plywood is not chemically treated. It achieves its water resistance 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 / 5 496 reviews
Ben Thompson, 24th July
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Terrible service, unable to contact. Terrible products. Good luck!
Verified, Collected by Cut My
Paul McCabe, 24th July
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Great service. Arrived promptly and at a good price.
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Brian Knight , 23rd July
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Top quality and fast efficient service
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karl, 22nd July
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Very easy process to buy , excellent service
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Gareth Allen, 22nd July
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Product fine
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Prof. Jon Godwin, 21st July
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Cut just as required and well-packaged. A stain on one side, although no matter. Delighted, many thanks!
Verified, Collected by Cut My
Jill Green, 20th July
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I gave the wrong measurements with my order and they were incredibly helpful and simply changed it with no charge
Verified, Collected by Cut My
Nigel Carrington, 17th July
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Promt delivery
Verified, Collected by Cut My
Dave Clews, 17th July
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Perfectly cut. There was some confusion about when it was ready to be collected (I had booked a click and collect) and when I turned up it wasn't! However, they promised to deliver it to me later that day did so in the evening. Service better than expected..
Verified, Collected by Cut My
Kevin Mason, 17th July
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Just the job for my bench
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