How and where to use guide
3.0Mtr X 47 X 150mm C24 Treated Regularised KD Carcassing Timber
Indoor structural applications
In indoor environments, C24 timber is ideal for floor joists, roof structures, and stud walls. The regularised finish provides a clean appearance, whilst the strength grading ensures adequate load capacity for residential and commercial buildings. Kiln-dried stock minimises moisture-related movement.
- Floor joists in domestic and commercial buildings
- Roof trusses and battens
- Internal stud walls and partition framing
- Loft conversions and structural supports
Outdoor and exposed applications
The pressure-applied preservative treatment protects against rot and insect attack in outdoor conditions. This makes C24 timber suitable for decking frames, garden structures, and external carcassing work. Ensure adequate ventilation and avoid prolonged ground contact without additional protection.
- Decking frames and structural supports
- Garden structures and pergolas
- External carcassing and framing
- Fence posts and outdoor construction (with appropriate additional protection if in ground contact)
Advantages over lower grades
C24 timber offers enhanced strength, stability, and fewer knots compared to C16 carcassing timber. This makes it the preferred choice for applications requiring higher load-bearing capacity or where appearance and workability are important factors.
- Superior load-bearing capacity for structural applications
- Fewer knots and improved visual appearance
- Better stability and reduced movement after installation
- Suitable for longer spans and heavier loads
Building regulations compliance
This timber meets current BS EN standards for strength-graded softwood. Always verify that the grade and specification meet the requirements of your specific project and local building regulations. Consult structural engineers or building control for load-bearing applications.
- Meets BS EN 338 strength grading standards
- Suitable for use in building regulation-compliant structures
- Verify suitability with building control for specific applications
- Retain documentation for inspection and certification purposes