18mm OSB3 Tongue and Groove Flooring Board 2440mm x 590mm (8' x 2')
- OSB3 structural grade board
- Tongue and groove edge profile
- Suitable for floors, roofs and walls
- Interior or covered construction use
Description
Product Information
18mm OSB3 Tongue and Groove Flooring Board in 2440mm x 590mm (8' x 2') is a strong structural board for floors, roof decking and wall sheathing in protected construction areas. The tongue and groove edges allow each board to slot neatly into place, helping create a firm, stable deck with fewer gaps between sheets. Supplied unfinished, this OSB3 board is suitable for interior or covered construction use and should be protected from prolonged exposure to rain, standing water or direct weathering.
Uses & Applications
- Structural flooring and subflooring where an OSB3 tongue and groove flooring board is specified.
- Roof decking beneath the specified roof covering or membrane.
- Wall sheathing in timber-frame and structural wall build-ups.
- Loft boarding, extensions and refurbishment projects.
- General structural boarding for new builds and trade construction work.
- Dry or covered structural areas where OSB3 board is specified.
- Floor, wall or roof build-ups with suitable insulation, membranes, battens and fixings.
- Interior or protected construction use, not prolonged direct weather exposure.
For projects where the specification calls for a thicker board, consider the 22mm OSB3 Tongue and Groove Flooring Board as an alternative option in the same tongue and groove format.
Benefits
- OSB3 structural grade - suitable for load-bearing use when correctly installed and protected.
- 18mm thickness - provides a solid board depth for common structural board applications.
- Tongue and groove edges - help sheets slot together for a tighter, more secure fit.
- Firmer deck surface - supports a more continuous boarded area with fewer open joints.
- Practical 2440mm x 590mm size - easier to handle and set out in internal spaces than full 8' x 4' sheets.
- Unfinished surface - ready to be covered within the specified floor, wall or roof build-up.
- Trade-focused board format - practical for flooring, decking and sheathing work where OSB3 T&G board is specified.
Installation and Handling Notes
- Store boards flat, dry and raised off the ground before installation.
- Use only in interior or covered construction areas unless the full build-up provides appropriate weather protection.
- Fix to suitable joists, battens or structural supports using appropriate screws, nails or adhesive according to the project specification.
- Allow suitable expansion gaps around perimeters and follow the required fixing centres for the intended application.
- Protect exposed or cut edges where required, especially in roof decking or humid-condition build-ups.
Board Coverage
Each 2440mm x 590mm board covers approximately 1.44m² before cutting and wastage. Always allow extra boards for trimming, cuts, layout and site waste.
FAQs
Is this 18mm OSB3 tongue and groove board suitable for flooring?
Yes, this 18mm OSB3 tongue and groove board is suitable for many flooring and subflooring applications where an 18mm structural OSB board is specified. Always check that the board thickness, joist spacing and fixing method match your project requirements before installation.
Can this OSB3 board be used for roof decking?
Yes, this OSB board can be used for roof decking when installed as part of a suitable protected roof build-up. It should be covered with the correct membrane, roof covering or waterproofing system and should not be left exposed to rain or direct weather for long periods.
Is OSB3 waterproof?
No, OSB3 is not waterproof. It is designed for structural use in humid conditions, which means it can perform well in protected construction areas where moisture levels may rise. However, it should not be exposed to prolonged rain, standing water or direct weathering.
How much area does one OSB3 T&G board cover?
Each OSB3 T&G board 2440 x 590mm covers approximately 1.44m² before cutting and waste. For flooring, roof decking or wall sheathing projects, allow extra material for trimming, layout and site wastage.
What is the difference between OSB3 and standard OSB?
OSB3 is a structural OSB board designed for load-bearing use in humid conditions. This makes it more suitable for applications such as flooring, roof decking and wall sheathing than lower-grade OSB boards intended only for general-purpose or dry internal use.
What does tongue and groove mean on an OSB board?
A tongue and groove OSB board has profiled edges that help adjoining boards slot together more securely. This can create a firmer, more continuous boarded surface, which is useful for flooring, decking and structural sheet material applications.
Is 18mm OSB T&G board easy to cut and install?
Yes, 18mm OSB T&G board can usually be cut with standard woodworking tools and fixed with suitable screws, nails or adhesive depending on the application. Boards should be stored flat and dry before installation.
Specification
| Brand | Unbranded |
|---|---|
| Edging | Tongue And Groove |
| Finish Size | Not Available |
| Type | OSB Board |
| Size | 8x2 |
| Length | 2.44m |
| Width | 590mm |
| Thickness | 18mm |
| Grade | OSB3 |
| Treatment | Untreated |
| Usage | Internal |
| Weight | 17 kgs |
| Manufacturer Part Number | OSB-TG-18-2440-0600-003 |
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.
Questions & Answers
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