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12mm Marine Plywood 2440mm x 1220mm (8' x 4')

SKU
CA000140
From £49.13 £40.94
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  • BS1088 marine plywood standard
  • Lighter board for easier handling
  • Ideal for lining, cabinets and joinery
  • Seal exposed edges before external use
Description

Product Information

This 12mm marine plywood sheet comes in a standard 2440mm x 1220mm size, giving you a full 8x4 board that is easier to handle than thicker marine plywood. It is a practical option for joinery, wall lining, cabinets, furniture, covered roofing work, exterior projects and marine-related repairs where moisture resistance is needed without the extra thickness of a heavier board. Made to the BS1088 marine plywood standard, it should be sealed before outdoor or high-moisture use.

Use & Application

This marine plywood 12mm works well where you need a moisture-resistant sheet that is easier to cut, lift and fit than thicker boards.

  • Wall lining and partitions - suitable for wall lining, boxing-in, backing panels and general internal construction.
  • Furniture, cabinets and joinery - useful for shelving, storage units, cabinet work, panels and made-to-measure items.
  • Roofing details - can be used for covered roofing applications where a 12mm plywood sheet is correctly supported and protected.
  • Flooring and subfloors - suitable for lighter-duty flooring work where the board is properly supported and specified.
  • Exterior projects - can be used outside when sealed, especially around cut edges and exposed faces.
  • Marine-related repairs - suitable for boat repairs, marine applications and moisture-prone areas where a thinner board is appropriate.

For extra rigidity or heavier-duty work, our marine plywood 18mm is a better choice for flooring, roof decking and more demanding site applications.

Benefits

  • Lighter 12mm sheet - easier to carry, cut and position on site.
  • Good moisture resistance - suitable for moisture-prone work when properly sealed.
  • Made to the BS1088 standard - suitable for demanding marine-related and exterior-prone applications.
  • Smooth sanded veneer finish - practical for joinery, panels, cabinets and furniture.
  • Suitable for protected external use - can be used outside when treated and correctly installed.
  • Full 2440mm x 1220mm size - covers larger areas while keeping the board easier to handle.

FAQs

Is this 12mm marine plywood made to BS1088?

Yes, this board is made to the BS1088 marine plywood standard, which makes it suitable for demanding joinery, building and marine-related work where moisture resistance and board quality are important.

Is 12mm marine plywood waterproof?

Marine plywood handles moisture better than standard plywood, but it is not a finished waterproof surface. For outdoor or damp-area use, the board should be sealed or treated, especially around exposed faces and edges.

Do cut edges need sealing?

Yes, cut edges should be sealed before the sheet is used outdoors or in moisture-prone areas. This helps reduce water ingress at the most exposed parts of the board.

What is 12mm marine plywood best used for?

This thickness is a good choice for wall lining, cabinets, shelving, furniture, backing panels, renovation work and general joinery where a lighter moisture-resistant sheet is preferred.

Can this board be used for roofing?

Yes, it can be used for covered roofing work where the sheet is correctly supported, fixed and protected. For heavier-duty roof decking, an 18mm board is usually the stronger option.

Can it be used for flooring?

This 12mm sheet can be used for lighter flooring or subfloor applications where it is properly supported and specified. For more rigid flooring work, 18mm marine plywood is generally a better choice.

How much does a 12mm marine plywood sheet weigh?

This sheet weighs approximately 21kg, making it easier to lift, carry and position than thicker marine plywood boards.

Should I choose 12mm or 18mm marine plywood?

Choose 12mm for lighter work such as wall lining, cabinets, panels, furniture and joinery. Choose 18mm when you need extra thickness and rigidity for flooring, roof decking or heavier site applications.

Specification
More Information
Thickness12mm
FinishVeneer Smooth Sanded
ApplicationWalls, Floor, Furniture, Roof
Size2440mm x 1220mm
Fire RatingNone
Edging Square
Moisture resistant Yes
GradeBS1088
ClassBS EN636 Class 3
Wood Species Keruing, Meranti
Weather ExposureExterior (needs to be treated) , Interior
Weight21 kgs
Delivery Information

Delivery Information

We offer fast and reliable delivery across London, Essex, and surrounding areas beyond the M25.

  • We aim to deliver on the same or next working day whenever possible for stocked items.
  • The standard delivery timeframe is 1–5 working days, depending on your location and product type.
  • Orders are delivered kerbside only — please notify us in advance of any access restrictions.

Once your order is placed, our Customer Care team will be in touch to confirm delivery details.
If your delivery is scheduled for the morning, we will call you the evening before to confirm the timing.
We also send a confirmation email once your order is booked in.
While we always aim to deliver on time, please note that delays may occasionally occur due to circumstances beyond our control (e.g. traffic, supplier delays, access restrictions).

Delivery Areas & Charges

Minimum order values vary by postcode.

Click here to view our full postcode list and delivery thresholds

If your postcode isn’t listed, we may still be able to deliver — please share your address and basket total, and we’ll confirm availability within 24 hours.

Returns & Refunds

  • We accept returns within 28 days for most unused and resaleable items.
  • A restocking fee and collection charge may apply.
  • Some items (e.g. custom-made, opened, or time-sensitive materials) are non-refundable.
  • Refunds are processed within 28 days to the original payment method.

Please view our full returns policy

Stocked vs. On-Request Products

  • Stocked items are dispatched promptly from our local branches.
  • On-request or special order items may take longer. We’ll confirm the expected lead times after checkout.
Returns & Refunds Policy

Returns Policy

Our general return policy terms are outlined below.

  1. We would gladly accept returns for anything you have purchased from us online within 28 days of delivery if you should change your mind and desire to return anything purchased from us, subject to our terms and conditions related to goods not being eligible for a refund. The products you want to return must be brand new, unused, and in perfect condition for resale.
  2. If you are a consumer as defined by the Consumer Contracts Regulations and you cancel your purchase within 28 calendar days from the day after receiving the products, you will get a refund that includes shipping charges, minus any deduction imposed in accordance with section 7.) below.
  3. If you decide to cancel your order, you are obliged to return the goods at your own expense. This must be done via a tracked and signed for delivery, or you may also refer to our section on returning items in-store (1)
  4. Before returning the items, you must provide us with written notice. If a package is returned to us by courier without warning, we retain the right to reject delivery.
  5. Your order number, contact information, and information on the items being returned should all be included in your notice of cancellation. The notification must be sent to us either by email, via our contact us page online, our page online, or alternatively by post.
  6. Until the products have been returned, you have a responsibility to ensure that you treat them with reasonable care. We retain the right to reject your request for a refund if the returned items are not in perfect condition for sale.
  7. If you return an item to one of our locations, there will be a minimum 15% restocking fee added to the returned items.
  8. An additional delivery charge of £40,00 will be applied (the delivery charge may vary depending upon your location and product type) along with the restocking charge if the items must be collected from your site.
  9. It will be the customer's obligation to either pick up the item(s) from our Romford branch or have a courier collect it from us if the item(s) returned are not in line with section 2. The time and date of the collection must be communicated to us via our contact page or via email. Items can only be kept for a maximum of 28 days.
  10. In accordance with the terms and conditions of online sales, the client is responsible for paying the cost of return delivery.
  11. Only the original credit card used for the purchase may be refunded. Refunds will be processed within 28 days of receiving the returned products, provided that section 2 is followed. After inspecting the returned products, we will reimburse the order using the original payment method. Within 28 days of receiving the item(s) back, the whole return process—including the money being refunded to the original payment method—will be completed.
  12. Once the refund is made, you will receive an email confirming the credit is being applied. The refunded amount should reach your account within 2 – 5 working days of receiving the credit-applied email notification.

Exchanging products

  1. If you are dissatisfied with the goods you received, you can exchange them for new ones rather than obtaining a complete refund.
  2. In rare situations, we may be able to deliver replacement items while exchanging the originals. However, this is dependent on the nature of the reported concern. For further information, please contact our customer service team.

In-store Return

  1. Please bring your order confirmation and picture ID if you wish to return something in-store. Any goods returned to other branches will be rejected and sent to the Romford branch.
  2. All refunds will be provided in accordance with our usual returns procedure, as outlined in the general returns policy conditions listed above. Please see components for further details (1–9). Refunds are only available to the original payment card.
  3. All orders returned in person to our Romford Branch may only be accepted between our Ecommerce hours of Monday to Friday, 7:00 a.m. to 5:00 p.m. If the order is returned outside of these hours, it will be denied, and you will be asked to return it within our regular business hours.

Products not eligible for refund

  1. Due to the nature of our products, we cannot accept returns on some items.
  2. Goods that we cannot ensure can be resold in line with health and safety regulations, such as packaged products that we cannot guarantee were stored in specific for that product conditions and, as a result, may be compromised in nature and cannot be returned.
  3. Goods that we cannot confirm can be resold in line with health and safety regulations, such as packaged products that we cannot guarantee were stored in specific for that product conditions and, as a result, may be compromised in nature and cannot be returned.

Please find here the list of items we do not offer refunds:

  • Made-to-measure or bespoke/personalised products.
  • Perishable goods.
  • Any product with short shelf life or sell-by date.
  • Any bulk bag products
  • Sand or products delivered in an open fashion.
  • Specially obtained/ordered goods.
  • Boilers/Cylinders which have been opened.
  • Cementitious goods (e.g. cement).
  • Plaster-based products (e.g. multi-finish).
  • Mixed paints/liquids
  • Chemicals/liquids which have been opened.
  • PIR insulation boards.
  • Toilet seats have been opened due to hygiene purposes.
  • Sealed/sensitive electrical goods, if in sealed packages that have been opened, e.g. circuit boards.
  • Goods that have been fitted/installed.
  • Any goods have become mixed inseparably with other items/orders after their delivery.

We cannot give a refund or exchange due to the nature of these materials unless they are damaged. Please keep in mind that in some cases, store credit may be granted to be used for your future order.

Faulty Products

  1. Suppose the goods delivered (including custom orders and made-to-measure items) are defective or damaged. In that case, we will repair/exchange them or give you with a full refund, including shipping expenses.
  2. If an item(s) supplied by our local transportation comes broken or defective, we will only recover the damaged / faulty item(s). If you want to return another product as a regular return, you must bring it back to the Romford branch.
  3. Any defect or damage must be reported in writing, with a photo of the damage and a detailed explanation of the problem, to our contact us page within three working days of the products being delivered to you. We have the right to check any returned items before issuing a partial refund, full refund, or product exchange.
  4. Goods manufactured to your requirements, bespoke, or those that cannot be returned due to their nature.
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