Fixing and buying guide
2.4Mtr X 47 X 150mm C24 Treated Regularised KD Carcassing Timber
Selecting the right size
This product is supplied as 2.4 metre lengths with a finished section of 47 × 150mm. C24 timber is suitable for floor joists, roof battens, stud walls, and decking frames. Check your structural design or building plans to confirm the correct section size for your application, as load-bearing requirements vary depending on span and spacing.
- Verify joist spacing and span requirements before purchase
- C24 offers superior strength compared to C16 timber, making it suitable for longer spans and heavier loads
- The regularised finish means edges are planed smooth for consistent sizing and easier handling
Storage and handling
Treated timber should be stored correctly to maintain its condition before installation. Keep it dry and well-ventilated, and avoid prolonged exposure to direct sunlight or standing water.
- Stack timber horizontally on level ground with spacers between layers to allow air circulation
- Protect from rain and excessive moisture during storage
- Handle with care to avoid damage to the planed surfaces
Fixing methods
C24 carcassing timber is typically fixed using nails, screws, or bolts depending on the application. For structural work, follow your building design and local building regulations.
- Use corrosion-resistant fixings (stainless steel or galvanised) to prevent rust staining and degradation
- For joist hangers and structural connections, use appropriate metal brackets rated for the load
- Pre-drill screw holes in larger sections to reduce splitting risk
Treated timber considerations
This timber is pressure-treated with preservative to resist rot, fungal decay, and insect attack. The treatment provides long-term durability, particularly in damp or outdoor environments.
- Treated timber is suitable for both internal and external use
- The preservative treatment is integral to the timber and does not require additional coating for protection
- Wear gloves when handling to avoid skin contact with preservative residue