OSB Class 3 Structural Board 2440 x 1220mm – 9mm, 11mm & 18mm

OSB Class 3 Structural Board – Available in 9mm, 11mm & 18mm

Our OSB Class 3 Structural Board is a premium engineered wood panel designed for structural use in humid conditions. Manufactured from carefully oriented wood strands bonded with moisture-resistant resins, it offers outstanding strength, dimensional stability, and long-lasting durability for a wide range of construction and DIY applications.

Available in 9mm, 11mm, and 18mm thicknesses, this versatile board is suitable for roofing, flooring, wall sheathing, timber frame construction, site hoardings, sheds, garages, workshops, and general building work. Its consistent construction provides excellent screw-holding performance and is easy to cut, drill, and install using standard woodworking tools.

Whether you're a professional contractor or a DIY enthusiast, OSB Class 3 offers a cost-effective alternative to plywood while delivering dependable structural performance.

Features & Benefits
Available in 9mm, 11mm and 18mm thicknesses
Structural Grade OSB Class 3
Suitable for use in humid conditions
High strength and excellent dimensional stability
Ideal for roofing, flooring and wall sheathing
Excellent screw and nail holding performance
Easy to cut, drill and install
Manufactured to EN 300 structural standards
Sustainably sourced engineered timber
Suitable for both professional and DIY projects
Typical Applications
Roof decking
Structural flooring
Wall sheathing
Timber frame construction
Garden buildings and sheds
Garages and workshops
Site hoardings
Packaging and crates
General construction and refurbishment
Thickness Options

Choose the thickness that best suits your project:

9mm – Ideal for wall sheathing, roof decking, hoardings, and lightweight construction.
11mm – A versatile option for roofing, wall sheathing, and general structural applications.
18mm – Heavy-duty board suitable for structural flooring, load-bearing applications, and demanding construction projects.

OSB Class 3 is manufactured to provide consistent quality, excellent durability, and reliable structural performance, making it a trusted choice for builders, tradespeople, and homeowners alike.