Spring Sale - 5% OFF orders £50+ -

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

12mm Marine Plywood Sheets

Star Rating
Star Rating
Star Rating
Star Rating
Star Rating
1079 reviews
Rated 4.7 out of 5 stars
5 stars
(917)
4 stars
(91)
3 stars
(17)
2 stars
(15)
1 star
(39)
£2.00 Inc. VAT
Order a Sample

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.

More product info

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

Collect from BN5 9XR: -

£2.00 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

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

Star Rating
Star Rating
Star Rating
Star Rating
Star Rating
4.7 / 5 1079 reviews
Mr philip wright, 17th July
Star Rating
Star Rating
Star Rating
Star Rating
Star Rating
Very happy with the service and the product. Arrived ahead of time and fitted straight into the cabinet. Bought as shelves for a display cabinet they arrived cleanly cut and straight cut, something I probably would not of achieved. A+
Verified, Collected by Cut My
marina cacciagrano, 13th July
Star Rating
Star Rating
Star Rating
Star Rating
Star Rating
The board arrived ontime, well cut and accurate to the measures provided. The plywood is of good quality. It allowed me to repair a built-in wardrobe.
Verified, Collected by Cut My
Janet, 13th July
Star Rating
Star Rating
Star Rating
Star Rating
Star Rating
Excellent for the work
Verified, Collected by Cut My
Rowena, 12th July
Star Rating
Star Rating
Star Rating
Star Rating
Star Rating
Perfect for intended purpose to provide a flat solid surface to the top of some made to measure dog crates to make the surface more useful!
Verified, Collected by Cut My
David Amor, 9th July
Star Rating
Star Rating
Star Rating
Star Rating
Star Rating
Good service , quality of the ply use could be better
Verified, Collected by Cut My
Brian M, 8th July
Star Rating
Star Rating
Star Rating
Star Rating
Star Rating
Ordered 18mm marine plywood blocks to sit under legs of above ground pool. Quick delivery. Good value. Quality product cut precisely and well packaged. All good
Verified, Collected by Cut My
Sarah Softly, 7th July
Star Rating
Star Rating
Star Rating
Star Rating
Star Rating
I ordered a piece of cut to size plywood as backing for a cabinet. The ply was good quality, neatly and accurately cut and pricing and postage were reasonable
Verified, Collected by Cut My
Steve Couch, 5th July
Star Rating
Star Rating
Star Rating
Star Rating
Star Rating
am very please with teh cut and quality..
Verified, Collected by Cut My
Marc, 5th July
Star Rating
Star Rating
Star Rating
Star Rating
Star Rating
Quality goods, exceptional service, great prices and an absolute pleasure to deal with. No hesitation in highly recommending.
Verified, Collected by Cut My
EH, 4th July
Star Rating
Star Rating
Star Rating
Star Rating
Star Rating
I’m not a joiner but needed different sections for a small awkward space. Cut exactly as required and made the job so much easier.
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.