OSB Board 2440 x 1220 x 18mm
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Product Details
Oriented Strand Board's cross-layered wood strands (11mm/18mm) provide structural sheathing for walls and roofs. The 18mm version serves as flooring underlay, while 11mm works for wall cladding. Classified as OSB3, these boards withstand humid conditions better than traditional chipboard
As of August 2026, PriceNailer data confirms that the cheapest price for OSB Board 2440 x 1220 x 18mm is £22.27 from Selco across 6 suppliers. Prices have decreased by 5.7% over the last 19 months.
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Frequently Asked Questions
What is OSB Board 18mm suitable for?
18mm OSB board is ideal for structural flooring applications, roof decking, and wall sheathing. Its thickness provides excellent structural integrity and can handle higher loads compared to thinner OSB boards.
What does OSB3 classification mean?
OSB3 classification means the board is suitable for structural use in humid conditions. It has enhanced moisture resistance compared to OSB1 and OSB2, making it perfect for construction applications where occasional moisture exposure may occur.
How much area does one OSB board 2440x1220mm cover?
One OSB board measuring 2440mm x 1220mm covers approximately 2.98 square metres. This standard size is designed to fit efficiently between common joist spacings in UK construction.
Can I use 18mm OSB board for flooring?
Yes, 18mm OSB board is commonly used as flooring underlay or subflooring. Its structural strength and moisture resistance make it an excellent choice for both domestic and commercial flooring applications.
What tools do I need to cut OSB board?
You can cut OSB board using a circular saw, jigsaw, or hand saw with fine teeth. Use a sharp blade designed for wood composites and support the board properly to prevent splintering or breakout.