Fixing and buying guide
3.0Mtr X 47 X 125mm C24 Treated Regularised KD Carcassing Timber
Specification and grading
This timber is strength-graded to C24 standard, indicating superior load-bearing capacity and reliability compared to lower grades such as C16. The regularised finish means the timber has been planed to consistent dimensions, making it easier to work with on site. Kiln-dried (KD) stock reduces moisture content, minimising movement and warping after installation. The pressure-treated preservative provides long-term protection in exposed or damp conditions.
- Strength grade: C24 (suitable for structural applications)
- Dimensions: 47 × 125 mm × 3.0 metres
- Finish: Regularised and planed
- Moisture content: Kiln-dried
- Treatment: Pressure-applied preservative
Typical applications
C24 treated carcassing timber is commonly used for structural framing where load-bearing performance is required. Its enhanced strength and stability make it suitable for both permanent indoor structures and outdoor applications where durability is essential.
- Floor joists and joist hangers
- Roof battens and structural framing
- Stud walls and partition framing
- Decking frames and outdoor structures
- General structural carcassing work
Buying considerations
When ordering, confirm the length and cross-section meet your design requirements. C24 timber is available in a range of sizes; this 47 × 125 mm profile is suitable for medium-span joists and standard wall framing. Check your building design or structural engineer's specification to ensure the grade and dimensions are appropriate for your application. Treated timber should be stored under cover and kept dry before installation.
- Verify structural design requirements before purchase
- Confirm length and cross-section match your project needs
- Store under cover in dry conditions prior to use
- Handle with care to avoid damage to the planed surface