9mm OSB3 Sterling Board OSB Sheet is a highly adaptable and cost-effective engineered wood panel, widely used as an alternative to plywood. Also known as OSB3 or conditioned Sterling Board, it provides reliable structural strength and performs well in demanding, humid conditions.
The board is made to maximise efficiency, with the entire log used to reduce waste. Responsibly sourced from managed forests, it offers an environmentally conscious solution for both professional and DIY applications. Please note sheet sizes may vary slightly due to the cutting process.
Common uses include timber frame construction, sheathing, cladding, DIY home improvements, sheds, packaging, racking, exhibition stands, decorative interiors, temporary hoardings, and roof decking. Its durability and smooth finish make it a practical choice across construction and joinery projects.
Key Features • Complies with BS EN 300 for structural load-bearing in humid conditions • Coverage: from 0.093 m² (305 × 305 mm) to 2.88 m² (2440 × 1220 mm) • Weight: approx. 230g to 14,700g depending on sheet size • FSC-certified and responsibly sourced • Suitable for multiple construction and DIY applications
Arranwood
Timber Sheets
Size
305mm x 305mm (1ft x 1ft)
610mm x 305mm (2ft x 1ft)
610mm x 610mm (2ft x 2ft)
915mm x 305mm (3ft x 1ft)
915mm x 610mm (3ft x 2ft)
915mm x 915mm (3ft x 3ft)
1220mm x 305mm (4ft x 1ft)
1220mm x 610mm (4ft x 2ft)
1220mm x 915mm (4ft x 3ft)
1220mm x 1220mm (4ft x 4ft)
1525mm x 305mm (5ft x 1ft)
1525mm x 610mm (5ft x 2ft)
1525mm x 915mm (5ft x 3ft)
1525mm x 1220mm (5ft x 4ft)
1830mm x 305mm (6ft x 1ft)
1830mm x 610mm (6ft x 2ft)
1830mm x 915mm (6ft x 3ft)
1830mm x 1220mm (6ft x 4ft)
2440mm x 305mm (8ft x 1ft)
2440mm x 610mm (8ft x 2ft)
2440mm x 915mm (8ft x 3ft)
2440mm x 1220mm (8ft x 4ft)
{PRODUCT_DESCRIPTION}
Delivery is free to Mainland England and Wales. Deliveries are chargable to Scotland.
Once the order is placed, our courier will call you within 3 working days to arrange a delivery date. If you do not hear from the courier within 3 days, please get in touch with us. The majority of deliveries are made within 7 days, occasionally a little longer during peak periods.
Deliveries are made between 08:00 and 18:00 on the day, we request the driver calls you one hour before with an advised time.
Delivery is made via a kerbside tail lift lorry, we cannot deliver to sloping ground as the tail lift must be able to lay flat.
The road must be wide enough for a lorry to fit down and free from obstruction, if there are any access restrictions, please contact us.
Deliveries must be signed for, please report any damages to us within 24 hours.
We offer all bricks with a tail lift offloading service, Please familiarise yourself with the information below.
Crane offloading is available as a premium service for some bricks.
FAQ
All of our C16 and C24 graded timber is regularised
Regularised timber is timber that has been processed to have a uniform shape and size. This means that the wood has been sawn and planed to remove any irregularities and ensure that each piece of wood has consistent dimensions. Regularised timber is often used in construction, particularly in the framing of buildings, as it is easier to work with and can be more efficiently installed than irregularly shaped timber.
We have one of the largest ranges of timber lengths, dimensions and grades available to buy online.
The variation you require will determine the exact lead time and delivery method.
Most orders arrive within 3-4 days, the maximum is 7 days. Please get in touch before you order if you need a specifc delivery date.
Delivery charges vary by postcode. To find out the delivery charge, add the item(s) you require to your basket and select CALCULATE SHIPPING at the bottom of the page.
Some orders are delivered on our own vehicles based in Leicestershire and Cheshire. We also use carriers including Yodel and Tuffnells. For some sizes and locations we use regional distributors.
If you'd prefer crane offloading rather than tail lift vehicle offloading for your brick order then this service is available for the majority of bricks that we sell. Charges are shown at checkout.
For deliveries of less than 6 packs then Taillift offloading is normally a more cost effective option
Downloadable information can be found here:
Armstrong Cheshire supply the full range of Catnic Lintels. If you don't see the lintel you need on our website, choose from the Catnic Lintel Selector Brochure and give us a call 01625 322269
Downloadable information can be found here:
9mm OSB3 Sterling Board OSB Sheet is a highly adaptable and cost-effective engineered wood panel, widely used as an alternative to plywood. Also known as OSB3 or conditioned Sterling Board, it provides reliable structural strength and performs well in demanding, humid conditions.
The board is made to maximise efficiency, with the entire log used to reduce waste. Responsibly sourced from managed forests, it offers an environmentally conscious solution for both professional and DIY applications. Please note sheet sizes may vary slightly due to the cutting process.
Common uses include timber frame construction, sheathing, cladding, DIY home improvements, sheds, packaging, racking, exhibition stands, decorative interiors, temporary hoardings, and roof decking. Its durability and smooth finish make it a practical choice across construction and joinery projects.
Key Features • Complies with BS EN 300 for structural load-bearing in humid conditions • Coverage: from 0.093 m² (305 × 305 mm) to 2.88 m² (2440 × 1220 mm) • Weight: approx. 230g to 14,700g depending on sheet size • FSC-certified and responsibly sourced • Suitable for multiple construction and DIY applications
Arranwood
Timber Sheets
Size
305mm x 305mm (1ft x 1ft)
610mm x 305mm (2ft x 1ft)
610mm x 610mm (2ft x 2ft)
915mm x 305mm (3ft x 1ft)
915mm x 610mm (3ft x 2ft)
915mm x 915mm (3ft x 3ft)
1220mm x 305mm (4ft x 1ft)
1220mm x 610mm (4ft x 2ft)
1220mm x 915mm (4ft x 3ft)
1220mm x 1220mm (4ft x 4ft)
1525mm x 305mm (5ft x 1ft)
1525mm x 610mm (5ft x 2ft)
1525mm x 915mm (5ft x 3ft)
1525mm x 1220mm (5ft x 4ft)
1830mm x 305mm (6ft x 1ft)
1830mm x 610mm (6ft x 2ft)
1830mm x 915mm (6ft x 3ft)
1830mm x 1220mm (6ft x 4ft)
2440mm x 305mm (8ft x 1ft)
2440mm x 610mm (8ft x 2ft)
2440mm x 915mm (8ft x 3ft)
2440mm x 1220mm (8ft x 4ft)
{PRODUCT_DESCRIPTION}
Delivery is free to Mainland England and Wales. Deliveries are chargable to Scotland.
Once the order is placed, our courier will call you within 3 working days to arrange a delivery date. If you do not hear from the courier within 3 days, please get in touch with us. The majority of deliveries are made within 7 days, occasionally a little longer during peak periods.
Deliveries are made between 08:00 and 18:00 on the day, we request the driver calls you one hour before with an advised time.
Delivery is made via a kerbside tail lift lorry, we cannot deliver to sloping ground as the tail lift must be able to lay flat.
The road must be wide enough for a lorry to fit down and free from obstruction, if there are any access restrictions, please contact us.
Deliveries must be signed for, please report any damages to us within 24 hours.
We offer all bricks with a tail lift offloading service, Please familiarise yourself with the information below.
Crane offloading is available as a premium service for some bricks.
All of our C16 and C24 graded timber is regularised
Regularised timber is timber that has been processed to have a uniform shape and size. This means that the wood has been sawn and planed to remove any irregularities and ensure that each piece of wood has consistent dimensions. Regularised timber is often used in construction, particularly in the framing of buildings, as it is easier to work with and can be more efficiently installed than irregularly shaped timber.
We have one of the largest ranges of timber lengths, dimensions and grades available to buy online. The variation you require will determine the exact lead time and delivery method.
Most orders arrive within 3-4 days, the maximum is 7 days.
Please get in touch before you order if you need a specific delivery date.
Delivery charges vary by postcode. To find out the delivery charge, add the item(s) you require to your basket and select CALCULATE SHIPPING at the bottom of the page. Some orders are delivered on our vehicles based in Leicestershire and Cheshire. We also use carriers including Yodel and Tuffnells. For some sizes and locations, we use regional distributors.
If you'd prefer crane offloading rather than tail lift vehicle offloading for your brick order then this service is available for the majority of bricks that we sell. Charges are shown at checkout.
For deliveries of less than 6 packs then Taillift offloading is normally a more cost effective option
Downloadable information can be found here:
Armstrong Cheshire supply the full range of Catnic Lintels. If you don't see the lintel you need on our website, choose from the Catnic Lintel Selector Brochure and give us a call 01625 322269
9mm OSB3 Sterling Board OSB Sheet - 305mm x 305mm (1ft x 1ft)
is backordered and will ship as soon as it is back in stock.
Couldn't load collection availability
Delivery charges will vary depending on your location.
To find out delivery cost to your postcode, add the products your require to your basket and then review your basket, entering the delivery postcode
We look to dispatch all products same-day where possible, we use a close network of couriers we have worked alongside for a number of years and will share any and all shipping updates with you directly.
9mm OSB3 Sterling Board OSB Sheet is a highly adaptable and cost-effective engineered wood panel, widely used as an alternative to plywood. Also known as OSB3 or conditioned Sterling Board, it provides reliable structural strength and performs well in demanding, humid conditions.
The board is made to maximise efficiency, with the entire log used to reduce waste. Responsibly sourced from managed forests, it offers an environmentally conscious solution for both professional and DIY applications. Please note sheet sizes may vary slightly due to the cutting process.
Common uses include timber frame construction, sheathing, cladding, DIY home improvements, sheds, packaging, racking, exhibition stands, decorative interiors, temporary hoardings, and roof decking. Its durability and smooth finish make it a practical choice across construction and joinery projects.
Key Features • Complies with BS EN 300 for structural load-bearing in humid conditions • Coverage: from 0.093 m² (305 × 305 mm) to 2.88 m² (2440 × 1220 mm) • Weight: approx. 230g to 14,700g depending on sheet size • FSC-certified and responsibly sourced • Suitable for multiple construction and DIY applications
9mm OSB3 Sterling Board OSB Sheet is a highly adaptable and cost-effective engineered wood panel, widely used as an alternative to plywood. Also known as OSB3 or conditioned Sterling Board, it provides reliable structural strength and performs well in demanding, humid conditions.
The board is made to maximise efficiency, with the entire log used to reduce waste. Responsibly sourced from managed forests, it offers an environmentally conscious solution for both professional and DIY applications. Please note sheet sizes may vary slightly due to the cutting process.
Common uses include timber frame construction, sheathing, cladding, DIY home improvements, sheds, packaging, racking, exhibition stands, decorative interiors, temporary hoardings, and roof decking. Its durability and smooth finish make it a practical choice across construction and joinery projects.
Key Features • Complies with BS EN 300 for structural load-bearing in humid conditions • Coverage: from 0.093 m² (305 × 305 mm) to 2.88 m² (2440 × 1220 mm) • Weight: approx. 230g to 14,700g depending on sheet size • FSC-certified and responsibly sourced • Suitable for multiple construction and DIY applications
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
Built for Humid Conditions
The 9mm OSB3 board is engineered for use in areas exposed to moisture. It maintains stability and strength where traditional materials may weaken. This makes it ideal for structural applications such as wall sheathing and roof decking.
The smooth, knot-free surface allows for clean cutting, drilling, and fixing. It also supports GRP roofing systems without sanding, saving preparation time.
Certified for Structural Use
Complying with BS EN 300 standards, OSB3 provides consistent performance in structural and load-bearing applications. Builders and DIY users can rely on its compliance for safe and durable installations.
Sustainable Choice
The board is produced using efficient processes to minimise waste and reduce impact. FSC certification supports responsible sourcing, making it a dependable option for environmentally conscious projects.
Coverage and Fit
Available in sizes ranging from 305 × 305 mm to 2440 × 1220 mm, coverage spans 0.093 m² to 2.88 m² per sheet. Its density ensures each board balances strength with manageable handling across applications.
Practical Versatility
From construction to DIY, this board suits a wide range of uses. It performs in sheathing, flooring, packaging, sheds, decorative features, and hoardings. Its adaptable nature ensures dependable performance across projects of all sizes.
Have a question?
If you have any questions about our products or would like to learn more about our shipping options please feel free to contact one of our team today.
