How and where to use guide
4.2Mtr X 47 X 150mm C24 Treated Regularised KD Carcassing Timber
Structural applications
C24 timber is commonly used for floor joists, where it provides reliable load-bearing performance in residential and commercial buildings. It is also suitable for roof battens, stud walls, and general structural framing. The C24 grade offers enhanced stability and improved strength compared to lower grades, making it the preferred choice for applications requiring consistent structural performance.
- Floor joists in residential and commercial buildings
- Roof battens and structural framing
- Stud walls and partition framing
- Load-bearing applications requiring C24 strength grade
Outdoor and exposed locations
The pressure-treated preservative protection makes this timber suitable for outdoor applications, including decking frames, garden structures, and external building work. The treatment protects against rot and insect attack, extending the service life in exposed environments. However, additional protection such as cladding or paint may be required for maximum longevity in harsh weather conditions.
- Decking frames and outdoor structures
- External building applications
- Locations with exposure to moisture or ground contact
- Consider additional surface protection for extended life
Indoor applications
Indoors, C24 treated carcassing timber is ideal for floor joists, roof structures, and stud walls. The smooth, planed finish provides a clean appearance and makes installation straightforward. The treatment provides protection against fungal decay and insect infestation, ensuring long-term durability even in internal environments.
- Floor joists and structural framing
- Roof structures and battens
- Stud walls and internal partitions
- Planed finish suitable for visible applications
Advantages over lower grades
C24 timber offers enhanced stability, fewer knots, and improved strength compared to C16 timber. This makes it the better choice for applications where structural reliability and consistent performance are critical. The superior load-bearing capacity allows for longer spans or heavier loads in structural applications.
- Higher strength grade for demanding applications
- Fewer knots and improved consistency
- Better performance in load-bearing roles
- Longer potential spans in structural design
Professional and DIY use
Whether you are a professional builder or a DIY enthusiast, C24 treated carcassing timber delivers dependable results. The regularised finish and consistent sizing make it easy to work with, whilst the strength-graded properties ensure reliable structural performance. Always follow building regulations and structural specifications for your specific project.
- Suitable for professional and DIY applications
- Consistent sizing aids accurate installation
- Reliable performance across a range of projects
- Follow building regulations for your location