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11mm OSB 3 Board 2440mm x 1220mm (8′ x 4′)

Code: SM3871
(5 customer reviews)

OSB3 is an engineered, load-bearing wood-based panel product, free of knots and voids, and suitable for structural use in humid situations.




£16.09 £19.31 Inc VAT

The delivery cost is either £60.00 ex. VAT or £150.00 ex. VAT (depending on your delivery postcode). Please click "See Full Transport Policy" below for more information. The price is included in the order value at the checkout stage once the delivery details are provided. The next day delivery is available at the additional cost for orders placed before 11.30 AM. Please speak to the customer support representative for more information. If you are outside our delivery area, please click on the "SAVE & SHARE YOUR CART" button, select the email option and send to or call us on 0203 856 8578​. See Full Transport Policy

In Stock

Nationwide delivery
Open to businesses & public



Square Edge 11mm OSB3 board is a load-bearing wood base sheet manufactured in line with EN 300 performance standards. OSB board 11mm is suitable for applications in humid conditions. It so is an ideal sheet material for structural and nonstructural projects, as well as in both internal and external environments. The OSB3 11mm 2440 x 1220mm is predominantly used in:

  • Wall sheathing
  • Flooring & roofing applications
  • Roof decking 
  • Site hoarding 
  • Sarking applications
  • Suitable for GRP roofing applications 
  • Garden Sheds
  • Interior decoration

Benefits and Key features of OSB Sterling board 11mm

  • High quality, durable and knotless timber sheets, its smooth surface does not require sanding even for GRP roofing application [a minimum 18mm OSB3 thickness is recommended]
  • 11mm OSB is practical, easy to drill, nail, saw, file or sand
  • Environmentally friendly – produced with Zero added formaldehyde
  • High load-bearing capacity – an excellent alternative to plywood and other traditional wood boards
  • Conforming to EN 300 performance standards


Additional information

Weight 18.33 kg

2440mm x 1220mm






For use in roofs, For use in walls


BS EN300

Country of origin




Environmental certification






Fire rating


Formaldehyde level

E1 (low)



Moisture resistant


Product standard




Weather exposure


Wood species

Pine, Spruce

Product Documents

Declaration of performance


Questions & Answers (3)

Questions and answers of the customers

    To what radius can your 11mm thick board bend?
  1. 0 votes
    Q To what radius can your 11mm thick board bend? answer now
    Asked by Lisa Smith on 6 January 2022 9:32 am
    Answered by the admin

    We are not sure about the radius, however, if you try to bend the board it would break and OSB is not designed to be flexible. 

  2. to what radius can your 11mm thick board bend?
  3. 0 votes
    Q to what radius can your 11mm thick board bend? answer now
    Asked by Tim O'Donovan on 17 May 2021 8:40 pm
    Answered by the admin

    OSB is not designed to be flexible. You can not bend much, otherwise, it will break. 

  4. Would there be any extra discount for ordering 25sheets
  5. 0 votes
    Q Would there be any extra discount for ordering 25sheets answer now
    Asked by Dave Rouse on 15 May 2021 1:34 pm
    Answered by the admin

    We don't offer a further price reduction for the materials that have the "Everyday low price" tag above the image.

Send me a notification for each new answer.

Customer Product Reviews

5 reviews for 11mm OSB 3 Board 2440mm x 1220mm (8′ x 4′)

  1. Ken (verified owner)

    Great product to overclad an existing floor on a mezzanine in my unit.

    11mm OSB 3 Board 2440mm x 1220mm (8' x 4')
    0 0
  2. marcel van Engen (verified owner)

    Great experience.
    Being first time customer the whole experience was flawless. Good direct guidance from the team & quick confirmation.
    Good communication before supply of goods.
    Delivery was very quick and professional. Extremely nice driver (compliments). helped to unload the boards. Van size was also very suitable for the delivery place.
    Sheet material was all well received in quality expected.

    0 0
  3. David Holland (verified owner)

    good quality boards

    0 0
  4. Simon BROWN (verified owner)

    I am very pleased.

    These were no different to the ones you can get in the DIY store, as the quality was the same and very good, but at nearly half the price.

    I am very pleased.

    0 0
  5. NICOLA FAIRBROTHER (verified owner)

    Product as described

    Product as described

    1 0
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