18mm Birch Plywood BB/BB Throughout 2440mm x 1220mm (8' x 4')
- Full 2440mm x 1220mm sheet size
- BB/BB grade sanded faces
- Suitable for interior joinery work
- Edge-seal for humid conditions
Description
This type of plywood is classified as commercial grade, with both faces meeting the Grade BB standard. This means that it may contain patches, knots, or other imperfections. However, it is still suitable for a wide range of general applications where the appearance of the face is not a critical factor.
Product Information
This 18mm birch plywood sheet is a 2440mm x 1220mm BB/BB grade panel made from birch veneers throughout. It has sanded faces on both sides, giving a practical surface for cutting, fitting, sealing, painting, varnishing or laminating. As a birch plywood 18mm board, it is suitable for furniture, wall lining, panelling, joinery and other internal work where a stable full-size sheet is required. The board is listed as BS EN636 Class 2 and is not moisture-resistant, so humid or external use should include correct coating, sealing and edge protection.
Use & Application
These birch plywood sheets 18mm are suitable for projects where a full-size plywood board is needed for internal construction, joinery or practical finishing work.
- Furniture and cabinets - suitable for cupboards, shelving, storage units, cabinet carcasses and fitted furniture components.
- Wall lining and panelling - can be used for interior wall panels, backing boards, boxing-in, feature panels and covered surfaces.
- Joinery work - useful for built-in units, templates, workbench projects and made-to-measure timber fabrication.
- Wardrobe and door components - suitable for internal fittings where the BB/BB face will be sealed, painted, laminated or accepted as part of the final appearance.
- Vehicle fit-out and utility work - can be used for van lining, storage sections, crates, protective boards and practical workshop applications.
- Repairs and general site work - useful for boarding, patching, strengthening and other jobs that need a 2440mm x 1220mm plywood sheet.
- Humid or external areas - only suitable when the board is properly coated and all cut edges are sealed; it should not be left untreated in exposed conditions.
For a thinner option where a lighter board is enough, our 12mm birch plywood may be suitable for wall lining, furniture, boxing-in and other internal applications where 18mm birch plywood 8x4 is not required.
Benefits
- Full 2440mm x 1220mm size - suitable for covering larger areas with fewer joins.
- Birch throughout construction - made with birch veneers through the board, not only on the outer face.
- 18mm thickness - gives a more substantial panel for furniture, panelling, cabinets and joinery work.
- Sanded faces - easier to prepare for sealing, painting, varnishing, laminating or other finishing methods.
- BB/BB grade - suitable where patches, knots or natural repair marks are acceptable or will be covered by the final finish.
- BS EN636 Class 2 - suitable for interior use, including humid conditions when correctly protected.
- Workable sheet material - this 18mm birch ply can be cut, drilled, screwed and finished with standard woodworking tools.
- Clear use limits - not listed as moisture-resistant, so exposed faces and edges must be protected for humid or external applications.
FAQs
What does BB/BB grade mean on 18mm birch plywood?
BB/BB refers to the face grade on both sides of the sheet. It is a practical grade for general use, but it should not be treated as a clear decorative face. Small knots, patches or repair marks may be visible, especially if the surface is left exposed.
How much does an 18mm birch plywood sheet weigh?
The listed sheet weight is approximately 32kg. Plan handling before delivery or fitting, especially if the board needs to be moved through doorways, staircases or tight access points.
Can 18mm birch plywood be used outside?
It can only be used outside if it is properly treated. This product is not listed as moisture-resistant, so exposed faces and all cut edges should be coated or sealed before use in external or moisture-prone areas. It should not be left untreated in exposed conditions.
Can 18mm birch plywood be cut to size?
Yes, it can be cut to suit the project. Measure carefully before cutting and allow for blade width, edge finishing and any final trimming. For a cleaner result, support the sheet properly and use a suitable fine-tooth blade.
What fixings are suitable for 18mm birch plywood?
Wood screws are commonly used, but the right fixing depends on the frame, load and application. Pre-drilling is recommended near edges and corners to reduce the risk of splitting. For visible work, countersinking helps screw heads sit flush before filling or finishing.
How should 18mm birch plywood be stored before use?
Store the sheet flat, dry and well supported. Avoid leaving it upright for long periods or placing it directly on damp ground. On site, keep it covered until it is ready to be cut, sealed or fitted.
Should I choose 12mm or 18mm birch plywood?
Choose the thicker sheet when the project needs a more substantial panel, such as cabinet carcasses, shelving, worktops, panelling or heavier internal fittings. A thinner sheet may be enough for lighter lining, boxing-in, templates or covered panels where extra thickness is not needed.
Specification
| Thickness | 18mm |
|---|---|
| Finish | Smooth |
| Application | Walls, Furniture |
| Size | 2440mm x 1220mm |
| Fire Rating | None |
| Edging | Square |
| Moisture resistant | No |
| Grade | BB/BB |
| Class | BS EN636 Class 2 |
| Wood Species | Birch |
| Weather Exposure | Exterior (needs to be treated) , Interior |
| Weight | 32 kgs |
| Manufacturer Part Number | PLY-BP-18-244 |
Data Sheets
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.
- 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.
- 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.
- 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)
- 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.
- 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.
- 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.
- If you return an item to one of our locations, there will be a minimum 15% restocking fee added to the returned items.
- 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.
- 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.
- In accordance with the terms and conditions of online sales, the client is responsible for paying the cost of return delivery.
- 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.
- 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
- If you are dissatisfied with the goods you received, you can exchange them for new ones rather than obtaining a complete refund.
- 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
- 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.
- 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.
- 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
- Due to the nature of our products, we cannot accept returns on some items.
- 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.
- 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
- 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.
- 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.
- 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.
- Goods manufactured to your requirements, bespoke, or those that cannot be returned due to their nature.






