How and where to use guide
6.0Mtr X 47 X 175mm C24 Treated Regularised KD Carcassing Timber
Typical applications
This timber is commonly used for floor joists in residential and commercial buildings, roof battens and structural framing, stud walls for internal partitions and external walls, decking frames and outdoor structures, and general structural carpentry work. The 47 × 175mm section is a standard size for many of these applications, offering a good balance between strength and material efficiency.
- Floor joists: suitable for residential and light commercial floor construction
- Roof battens and rafters: provides reliable support for roof coverings
- Stud walls: ideal for both load-bearing and non-load-bearing partitions
- Decking frames: durable choice for outdoor decking structures
- General structural work: suitable wherever C24-grade timber is specified
Indoor applications
For internal use, C24 Treated Carcassing Timber performs well in floor joists, roof structures, and stud walls. The treatment provides protection against moisture and insect attack, making it suitable even in kitchens, bathrooms, and other areas where moisture levels may be elevated. The regularised finish provides a clean appearance suitable for visible applications or where further finishing is required.
- Provides long-term durability in moisture-prone areas
- Suitable for use in kitchens, bathrooms, and utility rooms
- Planed finish allows for easy decoration or further finishing
Outdoor applications
The pressure-treatment makes this timber suitable for outdoor use, including decking frames, pergolas, and other external structures. The preservative protection guards against rot and decay in exposed conditions. However, good design practice—such as adequate ventilation, drainage, and protection from standing water—remains essential for long-term performance.
- Suitable for decking frames and outdoor structural work
- Resistant to rot and decay in exposed conditions
- Requires good design and maintenance practices for optimal longevity
- Avoid prolonged contact with soil or standing water where possible
Building regulations and standards
C24 Treated Carcassing Timber meets current BS EN standards for structural timber. When used in building work, it must be installed in accordance with Building Regulations and any structural design requirements. Always verify that the timber grade and section size are appropriate for your specific application and comply with local building control requirements.
- Meets BS EN standards for structural timber
- Verify compliance with your local Building Regulations
- Confirm timber grade and section size match your structural design
- Consult a structural engineer if you are uncertain about suitability for your application