How and where to use guide
4.2Mtr X 47 X 175mm C24 Treated Regularised KD Carcassing Timber
Structural applications
C24 timber is ideal for load-bearing applications where strength and reliability are essential. It is commonly used for floor joists in residential and commercial buildings, where it must support live and dead loads safely. The C24 strength grade provides superior performance compared to lower grades such as C16, with fewer knots and improved load-bearing capacity.
- Floor joists in domestic and commercial buildings
- Roof battens and roof structures
- Stud walls and partition framing
- Decking frames and outdoor structures
Indoor construction
For interior building work, C24 timber provides a clean, professional finish thanks to its regularised (planed) surface. It is suitable for stud walls, partition framing, and internal structural elements. The timber's stability and reduced movement make it ideal for applications where dimensional accuracy is important. Its smooth finish requires minimal additional preparation before decoration or finishing.
- Internal stud walls and partition framing
- Floor joists and structural supports
- Roof structures and ceiling joists
- Minimal additional finishing required due to planed surface
Outdoor and exposed applications
The pressure-applied preservative treatment makes this timber suitable for outdoor use where it may be exposed to moisture, weather, and ground contact risk. It is commonly used for decking frames, garden structures, and external building elements. The treatment protects against rot, fungal decay, and insect infestation, extending the service life significantly compared to untreated timber.
- Decking frames and outdoor structures
- External building elements and cladding supports
- Garden structures and fencing frames
- Applications with moisture exposure or ground proximity
Compliance and standards
C24 Treated Carcassing Timber meets current BS EN standards for strength-graded structural timber. It is suitable for use in building work subject to Building Regulations. Always verify that the timber grade and size meet the requirements of your specific project, local building codes, and any structural engineer's specifications. For projects requiring certification or formal approval, consult with your local building control authority.
- Meets BS EN standards for strength-graded timber
- Suitable for Building Regulations-compliant construction
- Verify suitability against project specifications and local codes
- Consult building control for projects requiring formal approval