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25mm Marine Plywood Sheets

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679 reviews
Rated 4.7 out of 5 stars
5 stars
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2 stars
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1 star
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£2.00 Inc. VAT

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

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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 / 5 679 reviews
Miss Holmes, 12th March
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Brilliant customer service, cut me a complex shape at v good value.
Verified, Collected by Cut My
Guy, 11th March
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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
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Very pleased, thank you
Verified, Collected by Cut My
Malcolm Chinery, 10th March
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fast and efficient great service
Verified, Collected by Cut My
Trevor Watson, 6th March
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Problem free delivery and quality product
Verified, Collected by Cut My
Danny, 5th March
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Some sheets arrived damaged, however replacements were sent out promptly. Delivery drivers were respectful and courteous. Cutting of plywood not great, lots of splintering on cuts against grain, maybe blade needs replacing? Not perfect but convenient service.
Verified, Collected by Cut My
Ryan Hayes, 3rd March
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Exactly as described and well packaged.
Verified, Collected by Cut My
paul , 2nd March
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Very good quality and size as requested thank you guys
Verified, Collected by Cut My
Male 50s from midlands, 26th February
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Flexes not great for a shelf
Verified, Collected by Cut My
Michael Hanlon, 26th February
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It’s good cut how I wanted packaged brilliantly
Verified, Collected by Cut My
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_geewizz
11/01/23
so pleased with how our hallway is coming along 🥰 here is a little run down of what we’ve done 🎨 we painted the walls, skirting & door frames in slipper satin (paint matched at b&q) - I think I also want to do the ceilings as they need a refresh anyway 🪚 we panelled the wall longest wall which I loved doing, the most difficult part was going around the plug sockets - I ordered from cutmy.uk which was made to measure & absolutely brilliant 🎨 the panelling is painted in elephant’s breath (also paint matched at b&q) 🪞& then we added the mirrors 💡changed the light fitting 🖤 painted the little cabinet in pitch black - a bit risky but so pleased with how it came out 🪑added a bench and cushions 🌿 we bought a new (big) plant baby, bird of paradise & a large pot for the corner 🧥and some gorgey coat hooks for under the stairs made by ardovie_wood who we found on etsyuk We’re going to look for some baskets to go under the bench for shoes, and I want to get a new lamp too! And the current plan is the change the carpet to hard flooring next year. ➡️ swipe to the end to see the before photo • #Hallway #HallwayDecor #HallwayInspo #HouseUpdates #HomeDecor #HomeInterior #Panelling #GivingItAGo
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LIFE LATELY 🌲✨ I realised I legit NEVER post stills anymore, and shiney reels don't always show reality. So next year I vouch to make a bigger effort to post more pictures that capture the good bad & ugly! 1. The finished stairs garland after 599 attempts at tying a bow we got there - if you saw my stories you'll know this is an achievement 🤣 2. A moment of still/ gratitude with my babies 3. 4 month milestone!! Feels like 4 minutes and 4 years all in one. 4. A small win to be celebrated - I was in overwhelm city and I forced myself out the house. Obvs felt a million times better for it so need to remember for next time! 5. My breakfast bar of dreams 🥰 so happy with how's it's turned out - just need to make my mind up on paint. 6. Nap trapped and savouring the moment. She won't be this little again and as tough as it is I would swap anything to keep these cuddles longer 🥹 Bit different from me today!! Happy Friday Homeys 🥰 CHS x
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A carousel of my daughter’s room! I haven’t completely finished the other side of the room yet but swipe to see a gorgeous print from juniqeartshop It’s a beautiful addition to the room. They have a huge selection of prints so it was hard for my daughter to choose one but she chose well ❤️ You can get a generous 25% off everything at juniqeartshop with my discount code HOMEACROSS25 on orders over £29 / €29. The code applies to everything including posters and frames, and can also be used on top of existing sale offers. Be quick though, as the code expires on 16.10. Happy shopping! Print and Frame juniqeartshop Bed bae_beds Panelling cutmy.uk PR Paint coatpaints PR #juniqe #cutmyplastic #coatpaints #bedroom #bedroomtransformation #panelling #panelled #bedroomgoals I will add a link to my stories. Have a great day! Print and frame juniqeartshop Bed bae_beds Panelling cutmy.uk PR Paint coatpaints PR #juniqe #coatpaints #panelling #panelledwalls #panel #bedroom #bedroomdecor #bedroomtransformation #bedroominspo #greenpanelling
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