Skip to content
Mon - Fri 7.30am - 5.30pm, Saturday 7.30am - 12.30pm
Mon - Fri 7.30am - 5.30pm, Saturday 7.30am - 12.30pm

Related products

OSB3 Sterling Board | Structural Sheet Material – 9mm, 11mm, 18mm

Original price £0
Original price £16.32 - Original price £26.40
Original price
Current price £16.32
£16.32 - £26.40
Current price £16.32

Our OSB3 Sterling Board is a strong, versatile structural panel ideal for roofing, wall sheathing, flooring, site hoarding, and general construction. Manufactured to OSB3 specification, it is designed for use in load-bearing applications where high moisture resistance and durability are essential.

✅ Available thicknesses: 9mm, 11mm, and 18mm
✅ Board size: typically 2440mm x 1220mm (8ft x 4ft)
✅ Suitable for roof decking, flooring, partition walls, sheds, and hoarding
✅ High moisture resistance – suitable for external and humid environments (must be sealed if fully exposed)
✅ Manufactured from FSC® certified timber strands bonded with resins for strength and environmental performance

This OSB3 board delivers excellent load-carrying capacity and consistent performance, making it a popular choice with builders, roofers, joiners, and DIYers.


🛠️ Typical Uses:

  • Flat and pitched roof decking

  • Flooring systems and overlays

  • Timber frame wall sheathing

  • Site fencing and hoardings

  • Shed building and garden structures

✔️ Durable, versatile, and easy to cut and fix
✔️ Edge stamping for traceability and quality assurance
✔️ Nationwide UK delivery available

Marc Scott
April, 2025
Very handy having such a well stocked yard so close to my home, the staff are all very knowledgable and always keen to help and prices are good. ⭐️⭐️⭐️⭐️⭐️ operation 👌. - scotbeds
Ryan McGowan
March, 2025
sales girl Leighsa was really helpful with fast delivery
D
March, 2025
Outstanding customer care. I placed a small order (60£ timber) from Fife and paid with Apple Pay. Unfortunately the site defaulted to their normal own delivery service which is for an unlimited volume so good value for larger orders, but would have been too expensive for a small order like mine. I hadn’t seen this until the order went through (entirely my fault). I had thought to cancel and the weekend office team were very kind and understanding about this. We agreed I would call them in the week to arrange this. But Alan and the Alter team phoned me back a day later and said they had researched courier costs and would be happy to do that instead - which saved a huge amount of hassle on a product that was out of stock in most places locally and made the whole order very reasonable. They also refunded me the difference. Way above and beyond for a small customer - can’t recommend them enough and will be using them for more timber needs in the future.