Fixing and buying guide
4.8Mtr X 47 X 150mm C24 Treated Regularised KD Carcassing Timber
Selecting the right size
This product is supplied at 4.8 metres length with a cross-section of 47 × 150mm. Verify your project requirements against these dimensions before purchase. C24 timber is suitable for floor joists, roof battens, stud walls, and decking frames. Check your building plans or structural engineer's specifications to confirm the correct section size for your load-bearing application.
- Confirm length and cross-section match your project layout
- C24 grade provides superior load-bearing capacity compared to C16
- Regularised finish means consistent sizing across all pieces
Understanding the treatment
This timber is pressure-treated with preservative to protect against rot, fungal decay, and insect infestation. The treatment provides long-term durability, making it suitable for both internal and external applications. The kiln-dried (KD) specification means the timber has been dried to a controlled moisture content, reducing movement and improving stability.
- Pressure-treated for rot and decay resistance
- Kiln-dried to reduce moisture-related movement
- Suitable for exposed and sheltered locations
Storage and handling
Store treated timber in a dry location, protected from direct rainfall and ground contact. Although treated, the timber should not be left exposed to prolonged wet conditions before installation. Handle carefully to avoid damage to the planed finish. Wear appropriate personal protective equipment when cutting or working with the timber.
- Keep dry and off the ground before use
- Protect from prolonged exposure to weather
- Use standard hand and power tools for cutting and fixing
Fixing methods
C24 carcassing timber is typically fixed using galvanised or stainless steel fasteners to prevent corrosion and ensure durability. For structural applications such as joists and stud walls, use appropriate nails, screws, or bolts as specified in your building design. Ensure all fixings are corrosion-resistant, particularly in external applications or damp environments.
- Use galvanised or stainless steel fasteners
- Follow structural engineer specifications for fixing centres and methods
- Avoid contact between treated timber and unprotected steel