CLS and construction timber
Timber for stud walls, joists, frames and outdoor structures. Pick the section, whether it's treated, and the length.
What it's used for
- Stud walls, using CLS
- Floor and roof joists, subject to your design
- Fence posts and rails, using treated timber
- Frames and battens
Details
| Size | CLS 38x89, 47x50, 47x75, 47x100, 47x150, 47x200, 100x100 |
|---|---|
| Treatment | Treated, Untreated |
| Length | 2.4m, 3.0m, 3.6m, 4.8m |
| Sections | Sizes are in millimetres. 47x100 is the size many people call 4x2 |
| Sold by | The length |
Common questions
What size is 4x2 timber in millimetres?
It's usually sold as 47x100mm. Likewise, 6x2 is 47x150mm and 8x2 is 47x200mm.
Should I use treated or untreated timber?
Use treated timber outdoors or anywhere it could get damp. Untreated timber suits dry, internal work. Timber in contact with the ground needs treatment rated for it, so ask us if you're not sure.
What size joists do I need?
Joist size depends on the span, spacing and load. Check with your structural engineer, or use your building control officer's span tables.
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.