How and where to use guide
4.8Mtr X 47 X 150mm C24 Treated Regularised KD Carcassing Timber
Structural applications
This timber is commonly used for floor joists, where it provides reliable load-bearing performance in residential and commercial buildings. It is equally suitable for roof battens, providing structural support for roof coverings. In stud wall construction, C24 timber offers the strength and stability required for load-bearing and non-load-bearing partitions. The enhanced strength compared to C16 grade makes it the preferred choice where higher loads or longer spans are anticipated.
- Floor joists in residential and commercial buildings
- Roof battens and structural roof support
- Load-bearing and non-load-bearing stud walls
- Longer spans and higher load applications
Outdoor and exposed uses
The pressure-treated preservative protection makes this timber suitable for external applications including decking frames, garden structures, and outdoor building work. It can be used in contact with soil or in areas subject to moisture exposure, provided it is properly installed with adequate drainage and ventilation. The treatment protects against rot and insect attack, extending the service life of outdoor structures.
- Decking frames and outdoor platforms
- Garden structures and fencing frames
- External building work and exposed locations
- Applications with ground contact or high moisture
Indoor applications
Within buildings, C24 carcassing timber is used for internal structural work including floor joists, ceiling joists, and partition framing. The planed, regularised finish provides a clean appearance suitable for visible applications or where a professional finish is required. The kiln-dried specification ensures dimensional stability, reducing the risk of movement and associated cracking in plasterwork or finishes.
- Internal floor and ceiling joists
- Partition wall framing
- Structural support for internal building elements
- Reduced movement in finished buildings
Compliance and standards
This timber meets current BS EN standards for structural timber, ensuring it is suitable for use in building work subject to Building Regulations. Always verify that the timber grade and size are appropriate for your specific application by reference to structural design calculations or building control guidance. Treated timber should be installed in accordance with relevant building standards and good practice guidance.
- Meets BS EN standards for structural timber
- Suitable for Building Regulations applications
- Verify suitability with structural engineer or building control
- Install in accordance with current building standards