11mm OSB3 Board 2440 x 1220mm (8″ x 4″)

11mm OSB 3 Board 2440mm x 1220mm (8′ x 4′) – Structural & Moisture Resistant

Discover the versatility and strength of our 11mm OSB 3 Board, a premium oriented strand board designed for demanding construction projects across the UK. Measuring 2440mm x 1220mm (8′ x 4′), this structural sheet material is an excellent, cost-effective alternative to traditional plywood, offering superior performance in humid conditions. Engineered with cross-laminated wood strands bonded under high pressure, it provides consistent strength and stability without the common defects of knots or voids found in other timber products.

Our OSB 3 board is specifically manufactured to meet EN 300 standards for load-bearing applications in humid environments, making it a reliable choice for both internal and protected external structural uses. Its robust composition ensures high racking strength and dimensional stability, resisting warping, splitting, and expansion.

Key Features and Specifications

• Thickness: 11mm, providing reliable strength for various applications.
• Dimensions: 2440mm x 1220mm (approximately 8 feet x 4 feet), compatible with standard UK framing centres.
• Material: Engineered from oriented softwood strands, resin-bonded under heat and pressure.
• Grade: OSB 3 (Oriented Strand Board Type 3), certified for structural use in humid conditions (Service Class 2).
• Compliance: Conforms to BS EN 300 and often BBA approved, ensuring high industry standards.
• Moisture Resistance: Excellent performance in humid environments, making it suitable for areas with occasional dampness.
• Workability: Easy to cut, drill, nail, plane, file, and sand with standard tools, facilitating efficient installation.
• Environmental: Often FSC® or PEFC certified, made from sustainably sourced timber with low formaldehyde emissions (E1 class).
• Construction: Void-free construction ensures consistent structural integrity and strength.

Applications

The 11mm OSB 3 board is a highly versatile building material, trusted by trade professionals and DIY enthusiasts alike for a wide array of structural and general construction applications. Its moisture-resistant properties make it particularly suitable for:

• Roof Decking: Providing a stable, load-bearing base beneath roofing membranes, felt, or tiles for both pitched and flat roofs (though 18mm is often recommended for flat roofs with wider joist spans).
• Wall Sheathing: Offering essential lateral stability and rigidity for timber frame walls.
• Flooring Underlayment: Ideal for light traffic areas, loft flooring, and general sub-flooring where a solid, level surface is required (for heavier traffic or wider joist centres, 18mm is typically preferred).
• Site Hoardings: A durable and cost-effective solution for temporary site enclosures and fencing.
• Sheds & Garden Buildings: Perfect for robust construction of walls, roofs, and flooring in outdoor structures.
• General Construction: Suitable for a variety of internal and protected external projects requiring a strong, stable, and moisture-tolerant panel.

Delivery in and Around London

We offer reliable delivery of our 11mm OSB 3 boards across London and the surrounding counties. Our service covers all London boroughs, including Croydon, Lewisham, Southwark, Camden, and Hackney, as well as Greater London areas such as Enfield, Bexley, Redbridge, and Barnet. We also extend our delivery to neighbouring counties like Kent, Essex, Surrey, and Hertfordshire. Whether you require single sheets or bulk trade quantities, we ensure prompt and efficient delivery to your site. Please note, specific delivery options and lead times may vary.