Technical specifications
Fitting & quantities
OSB3 (oriented strand board) in full 8ft x 4ft sheets (2440 x 1220mm), sold by the sheet in 9mm, 11mm and 18mm. OSB3 is the grade for sheathing, roof decking and flooring in humid conditions — the go-to sheet for shed and garden building walls and roofs.
Supplied untreated — keep sheets dry and flat until they're fitted.
- Checked before it shipsTrade stock, not a drop-shipped guess
- Free local deliveryAcross Birmingham & the Black Country
Frequently bought together
Often ordered alongside this, on the same delivery.
See it in 3D
Turn it, zoom right in, and see how it is put together.
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Frequently asked questions
The things people ask before they order. Anything else, give us a ring.
How much is delivery?
For now we deliver across Birmingham & the Black Country only, and delivery is free. Put your postcode in the checker above to see if we cover you.
Is there a discount for buying in bulk?
Yes, and you do not need a code or an account. The discount is applied automatically at checkout: 3% from 10 units, 5% from 25 and 8% from 50, counted across everything in your basket.
What if I find it cheaper somewhere else?
Tell us where. If it is the same product, in stock and deliverable to your postcode, we will look at matching it. Read the price match promise.
Still not sure what you need?
Send us the measurements and we will tell you what the job takes.
