OSB3 and exterior ply
Structural sheets for flooring, sheathing and site hoardings. OSB3 is the everyday choice, and exterior ply gives a smoother face.
What it's used for
- Floor decking
- Sheathing timber frames
- Roof decks, subject to your design
- Site hoardings
Details
| Type | OSB3, Exterior ply |
|---|---|
| Thickness | 11mm, 18mm |
| Sheet size | 2.44 x 1.22m |
| Coverage | About 2.98m² a sheet |
| Sold by | The sheet |
Common questions
Is OSB3 waterproof?
OSB3 is made for humid conditions, but it isn't waterproof. Keep it covered on site and protect it once it's fixed.
What thickness of OSB do I need for a floor?
18mm is a common choice, but it depends on your joist spacing. Check this before you order.
How is delivery priced?
Delivery is £25 on orders under £275, £10 on orders from £275 to £400, and free over £400, all including VAT. Most items arrive in 2 to 3 working days, and 2-day delivery is £30 extra including VAT.
Where do you deliver?
We cover major cities and towns across England and parts of Wales. Enter your postcode to check.