Spring Sale - 5% OFF orders £50+ -

discount offer
£0.00
Configure Options
Qty: 1
Order a Sample
Show Visualiser

25mm Marine Plywood Sheets

Star Rating
Star Rating
Star Rating
Star Rating
Star Rating
685 reviews
Rated 4.7 out of 5 stars
5 stars
(571)
4 stars
(64)
3 stars
(14)
2 stars
(7)
1 star
(29)
  Inc. VAT
Order a Sample

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.

More product info

Free Delivery
Orders Over £250
Low Prices
Shop Smart & Save
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: -

  Inc. VAT
In Stock
Spring Sale - Get 5% Off - orders £50+
discount offer
thames valley air ambulance university of cambridge Eurostar National Trust gov uk NHS bannatyne legoland urban outfitters britvic jaguar landrover rspb
thames valley air ambulance university of cambridge Eurostar National Trust gov uk NHS bannatyne legoland urban outfitters britvic jaguar landrover rspb

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

Star Rating
Star Rating
Star Rating
Star Rating
Star Rating
4.7 / 5 685 reviews
Harvey Banner, 25th March
Star Rating
Star Rating
Star Rating
Star Rating
Star Rating
Cut perfectly and delivered quickly
Verified, Collected by Cut My
Karoline John, 25th March
Star Rating
Star Rating
Star Rating
Star Rating
Star Rating
Perfect fit
Verified, Collected by Cut My
John Thomas McCaig, 19th March
Star Rating
Star Rating
Star Rating
Star Rating
Star Rating
Delivered as promisedp
Verified, Collected by Cut My
Carl, 18th March
Star Rating
Star Rating
Star Rating
Star Rating
Star Rating
Very happy with the product
Verified, Collected by Cut My
Simon Philbrick, 17th March
Star Rating
Star Rating
Star Rating
Star Rating
Star Rating
It was what I ordered and cut to the dimensions given.
Verified, Collected by Cut My
customer Ian G, 16th March
Star Rating
Star Rating
Star Rating
Star Rating
Star Rating
Good product,cut exactly to size, excellent delivery service.
Verified, Collected by Cut My
Miss Holmes, 12th March
Star Rating
Star Rating
Star Rating
Star Rating
Star Rating
Brilliant customer service, cut me a complex shape at v good value.
Verified, Collected by Cut My
Guy, 11th March
Star Rating
Star Rating
Star Rating
Star Rating
Star Rating
Only place to get phenolic faced ply cut to size. Well packed and delivered precisley as ordered.
Verified, Collected by Cut My
Flapjack, 10th March
Star Rating
Star Rating
Star Rating
Star Rating
Star Rating
Very pleased, thank you
Verified, Collected by Cut My
Malcolm Chinery, 10th March
Star Rating
Star Rating
Star Rating
Star Rating
Star Rating
fast and efficient great service
Verified, Collected by Cut My
Customer Services

We're Here to Help

Our Help Centre is available 24/7 to explore FAQs, discover DIY ideas and advice, and even ask our community of fellow DIY enthusiasts.