OSB (Oriented Strand Board) has become a go-to material in construction, but many people still aren’t sure what it actually is. Here’s everything you need to know about OSB and why it’s so popular.
What is OSB?
OSB is made by compressing layers of wood strands (thin flakes) with adhesive, arranged in specific orientations. This gives it excellent strength and stability, often rivalling plywood at a lower cost.
Types of OSB
At The Good Sheet, we stock OSB3, the structural grade suitable for load-bearing and use in humid conditions.
Why builders choose OSB
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Strong and durable – excellent load-bearing capacity
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Affordable – generally cheaper than plywood
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Versatile – can be used in flooring, roofing, and walls
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Eco-friendly – made from fast-growing trees and smaller timber that would otherwise go to waste
Common uses for OSB
1. Flooring
Tongue-and-groove OSB3 boards are widely used as flooring in both new builds and renovations. Strong, stable, and easy to install.
2. Roofing
OSB is a favourite for flat and pitched roofs, providing a stable base for felt, tiles, or other coverings.
3. Wall sheathing
OSB3 is ideal for timber frame construction, bracing, and external walls. It adds rigidity and strength to the structure.
4. Packaging and furniture
Because of its strength and affordability, OSB is often used in crates, pallets, and even modern furniture designs with an industrial look.
Tips for using OSB
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Always seal edges if the board is exposed to the weather.
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Use OSB3 for anything structural or where humidity may be a factor.
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Make sure fixings are suitable – OSB holds nails and screws well but pre-drilling helps prevent splitting.
Why buy OSB from The Good Sheet?
We stock OSB3 in a range of thicknesses, ready to collect or deliver. Plus, with our cut-to-size service, you don’t need to manage full boards if you only require smaller panels.