How and where to use guide
2.4Mtr X 47 X 150mm C24 Treated Regularised KD Carcassing Timber
Structural applications
C24 timber is ideal for primary structural elements where strength and reliability are critical. Its superior load-bearing capacity compared to lower grades makes it the preferred choice for spans and loads that require enhanced performance.
- Floor joists in residential and commercial buildings
- Roof battens and structural roof work
- Stud walls for load-bearing and partition walls
- Decking frames and outdoor structures
Indoor construction
Within buildings, C24 carcassing timber performs well in dry, controlled environments. It is commonly used for structural framing where strength and dimensional stability are important.
- Floor joists supporting residential and commercial floors
- Roof trusses and rafter work
- Internal stud walls and partition framing
- Loft boarding and structural supports
Outdoor and exposed applications
The pressure-treated preservative protection makes this timber suitable for outdoor use where it will be exposed to moisture and weather. It resists rot and decay, extending service life in demanding conditions.
- Decking frames and structural supports
- Garden structures and pergolas
- Fence posts and structural fencing
- Outdoor building projects and extensions
Advantages over lower grades
C24 timber offers measurable benefits compared to C16 carcassing timber, making it the better choice for applications where performance matters.
- Higher strength rating allows longer spans with the same section size
- Fewer knots and improved grain structure for greater reliability
- Enhanced stability reduces movement and warping
- Better suited to heavy-load applications and longer-term durability
Compliance and standards
This timber meets current BS EN standards for structural timber, ensuring it complies with building regulations and professional construction requirements.
- Strength-graded to C24 standards for verified load-bearing performance
- Suitable for use in building work subject to Building Regulations
- Pressure-treated to recognised preservative standards for durability