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18mm OSB 3 Board

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14 reviews
Rated 5 out of 5 stars
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Robust structural OSB 3 panels made from cross-oriented bonded wood strands. This 18mm thick OSB board provides strength for load-bearing applications like flooring, roofing, and wall sheathing.

We only supply OSB/3 sheets. This means they are load-bearing boards for use in humid conditions. Order 18mm OSB 3 boards online today, fully cut-to-size.

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mm
Min: 100mmMax: 2440mm
mm
Min: 50mmMax: 1220mm

Approximate Weight: 56.77 g

Free delivery when you spend £250+

Estimated delivery: from Check My Postcode

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Specifications

Material Wood - Oriented Strand Board (OSB)
Finish None
Available Thicknesses 18mm
Maximum Sheet Size 2397mm x 1197mm
Minimum Sheet Size 100mm x 50mm
OSB Grade OSB/3
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 does OSB stand for?

OSB stands for Oriented Strand Board.

Is OSB water-resistant?

Most OSB is water-resistant, due to the construction process using wax, resins and wood strands. For truly waterproof OSB however, we recommend adding a waterproof coating.

Will OSB hold screws?

Yes, OSB can be screwed and nailed to any surface, as long as you have enough screws to fix it in place.

Is OSB stronger than Plywood?

OSB is 2 times stronger than plywood in shear. Generally, however, OSB and Plywood have a similar load strength.

What is OSB 3?

The term OSB/3 is used to describe a type of OSB, as follows: "load-bearing boards for use in humid conditions". This is defined in BS EN 300.

Delivery depends on the size of your order

Reviews

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5 / 5 14 reviews
Bertie, 4th November
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Excellent product. Easy to work with.
Verified, Collected by Cut My
Robert Oates, 29th October
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Easy as: measure, input sizes, address, pay, wait delivered!!!
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P Trott, 8th October
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Excellent service and speedy delivery. Shall use again.
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Jens Zinke, 8th October
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Excellent product, fast delivery, looks amazing as work desk. Very good value for money.
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Pip, 11th August
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Good product.
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Nicholas Richards, 30th July
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Great service. Easy to use website, clear delivery schedule, product delivered in excellent condition.
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Rikki Durrent, 29th July
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As expected and quick delivery
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Jeff Henshaw, 4th July
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The product is excellent, but the time that it took from order to delivery was extremely poor.
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Tara Cameron, 25th June
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Cut to my size and fits perfectly so much easier than trying to do this yourself. Great value for money.
Verified, Collected by Cut My
Reviewer, 10th June
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Superb service & packaging. Wood cut very accurately.
Verified, Collected by Cut My
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