11mm OSB

The 11mm OSB is known for its balanced thickness and dependable build, and in many projects, this sheet is referred to as the 11mm OSB 3 board or simply OSB3. The panel has a clean surface with a solid core that feels reliable from the start. It cuts smoothly, fixes easily and stays flat after installation, helping the rest of the work progress without complications. A practical, trustworthy option when you need a sheet that delivers the same quality every time.

What is OSB 11mm?

OSB 11mm is an engineered wood panel made from oriented strands that give balanced strength across the sheet and is made from pine and spruce fibres pressed together for a stable, consistent build. This thickness works well for subfloors, internal sheathing and general construction where a firmer board is needed. A 11mm OSB board provides reliable support and is suitable for structural applications inside the building envelope.

What is OSB3 11mm used for?

• Wall sheathing in timber frame builds.
• Light domestic flooring prep in areas that suit a slim board.
• Roofing decks inside warm roof systems using OSB 11mm panels.
• Internal partitions that need a firm but easy to handle board.
• Shed and garden building walls made with practical OSB3 board 11mm.
• Utility and service room linings for budget friendly projects.
• Backing boards for insulation layers in renovation work.
• Substrates under vinyl or laminate flooring where a smooth panel helps.
• Van and trailer linings that rely on the steady sheet material.
• Crate and packaging panels for bulky items that need tough 11mm OSB 3 sheets.

Benefits of 11mm OSB 3

The 11mm OSB board is manufactured to BS EN 300 as an OSB3 structural panel for use in walls, floors and roof bases. It is available in 2397 x 1197mm (7,86’ x 3,92’) and 2440 x 1220mm (8’ x 4’). The board comes with square edges, an unfinished surface and a clean, knot-free core made from pine and spruce strands. It holds a CE2+ rating, an E1 low-formaldehyde classification and a fire rating of Euroclass D-s2,d0. FSC-certified options are available for projects that require responsibly sourced materials.

• Offers a firm sheet that adds extra strength to floors and walls.
• Stays flat once installed and resists twisting during fitting.
• Offers even density across the sheet for predictable performance.
• OSB 3 11mm is easy to lift, handle and install on single-person jobs.
• Gives a stable base for sheathing, decking and dry-room flooring.
• Price represents a good value compared to plywood of similar strength.
• Accepts paints, adhesives and membranes well due to its unfinished surface.
• Made from pine and spruce strands for consistent structural stability.
• Suitable for lining, framing support and general interior building work.
• Square edges allow tight joints and cleaner finishes.

Why choose our OSB 3 board 11mm?

• Choosing 11mm OSB gives you reliable sheets that arrive ready to work. Stock is held in the UK, so there are no long delays. Fast nationwide delivery keeps your schedule on track. Next day delivery is available when the job cannot wait.
• OSB 11mm arrives clean, flat and consistent. This matters when you need every sheet to sit neatly and line up without fuss. Builders and DIY customers choose it because the sheet behaves predictably on site.
• For larger projects, a 11mm OSB board is available in pallet quantities. Volume discounts make bulk orders more cost-effective. The 11mm OSB board price stays fair and transparent. It helps control project budgets without compromising strength.
• Some clients request sustainability, so FSC-certified options are available. This is useful for anyone working on responsible sourcing requirements. Sheets like 11mm OSB sterling board offer steady quality across full packs.
• Ordering online is simple. You can buy OSB 11mm with flexible minimum order quantities. Residential and site delivery are both supported. Kerbside offload makes receiving the materials straightforward. Order tracking keeps you updated from dispatch to arrival.
• Sheet Materials Wholesale supports both trade and DIY. You can request prices for bulk orders or repeat purchases. Share your 11mm OSB 3 board specification and quantity. A fast quote is provided without long waiting times.

Ready to get your project moving. Choose your 11mm OSB, pick the quantity and add it to your basket. Fast UK delivery brings the sheets straight to your site or home. Simple, quick and always in stock.

FAQ 

Where to buy 11mm OSB?

You can buy 11mm OSB online at Sheet Materials Wholesale. UK stock with fast nationwide delivery.

What size screws for 11mm OSB?

For osb 11mm, 35 to 45mm wood screws are usually the best fit. Go longer if fixing into studs.

Can I use 11mm OSB for roof?

Yes, you can use the 11mm OSB board for internal roof decking and protected roof areas. For exposed roofing, a thicker sheet is recommended.

How much does 11mm OSB board weigh?

A sheet of 11mm OSB board normally weighs around 17 to 19 kg. 11mm OSB board may vary slightly depending on density.