4×3″ C24 Timber Rough Sawn Whitewood (100×75 mm) – 4.8 m
€27.23
In stock
| Quantity | Discount (%) | Price |
|---|---|---|
| 1 - 39 | — | €27.23 |
| 40 - 80 | 4% | €26.14 |
| 81+ | 8% | €25.05 |
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C24 strength-graded structural timber, certified for load-bearing applications
Kiln-dried to <22% moisture content for stability on site
Lightweight and easy to handle, cut, and fix
Designed for structural use behind finishes rather than visible detailing
Untreated, additional protection needed in damp or external locations
Product specification
- Length
- 4800 mm
- Width
- 100 mm
- Thickness
- 75 mm
- Weight
- 16.92 kg
- Material
- Timber
- Wood Type
- Softwood
Whitewood Timber
4×3 whitewood, 100 by 75 mm, is the post section: pergola and carport legs, newels, corner posts in a timber frame, and short heavy bearers. Strength-graded to C24 and kiln-dried below 22% moisture content, it is certified stock rather than sawmill run. It comes in 4.8 m lengths. Stocked in our warehouse for delivery across Ireland.
Why Whitewood?
A post works in compression, and what you want from it is straightness and a section that will not buckle under its own load. At 100 by 75 mm this is close enough to square to take load from any direction without a weak axis, and at around 17 kg for a 4.8 m length it is still a piece one person can stand up alone. The grading means the knots are within limits, which is what stops a post failing at the one weak point.
Installation guidance
Never set an untreated post into ground or concrete. Use a galvanised post base or shoe so the end sits clear of standing water, and pack under it so the load runs down the timber rather than into the fixing. Where two members meet a post, bolt through rather than skew-nailing, and use washers under both head and nut so the bolt does not crush into the timber over time.
Finishing & maintenance
Post bases, anything outdoors and anything within splash range of the ground must be the treated equivalent from our C24 treated timber range. Untreated 4×3 is for covered, dry work. If a post will be visible and finished, seal the end grain at top and bottom first: the ends drink far faster than the faces, and that is where a post starts to go. See every post and beam size in our C24 timber range. To compare sawn and treated sizes side by side, see our construction timber page.