9×2″ C24 Timber Rough Sawn Whitewood (225×44 mm) – 7.8 m
€82.63
In stock
| Quantity | Discount (%) | Price |
|---|---|---|
| 1 - 39 | — | €82.63 |
| 40 - 80 | 4% | €79.32 |
| 81+ | 8% | €76.02 |
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Product specification
- Length
- 7800 mm
- Width
- 225 mm
- Thickness
- 44 mm
- Weight
- 36.29 kg
- Material
- Timber
- Wood Type
- Softwood
Whitewood Timber
9×2 whitewood, 225 by 44 mm, is the long span section: heavy domestic floors, wide openings, and runs where nothing shallower will reach. Strength-graded to C24 and kiln-dried below 22% moisture content, every length carries the specifications needed for sign-off on regulated work. Lengths run from 3.6 m to 8.4 m. Stocked in our warehouse for delivery across Ireland.
Why Whitewood?
At this depth the limit is usually not strength but deflection: the floor is strong enough long before it stops feeling springy underfoot. That is why 225 mm exists in the range. It lets you hold a long span within the deflection limit rather than passing on strength and living with a floor that bounces. The 8.4 m lengths mean most domestic spans can be crossed without a splice at all.
Installation guidance
A section this deep must be restrained against rolling, so fit herringbone strutting or blocking at mid span and at no more than 2.5 m intervals along the run. Double joists under any partition running parallel above, and trim properly around stair openings rather than relying on the deck. Keep the top edge fixed down continuously, because an unrestrained deep joist buckles sideways long before it fails in bending.
Finishing & maintenance
This is an internal structural timber and needs to stay dry. Any joist bearing into blockwork, framing over an unheated space, or external use calls for the treated equivalent from our C24 treated timber range. Store on level bearers at close centres: a 8.4 m length of this section will take a permanent bow if it is stacked on two points, and that bow is very hard to design out once it is in the floor. Compare every joist depth in our C24 timber range, from 4×2 to 9×2. To compare sawn and treated sizes side by side, see our construction timber page.