Fixing and buying guide
4.8Mtr X 75 X 200mm C24 Treated Regularised KD Carcassing Timber
Selecting the right size
This 75 × 200mm section is a standard carcassing size suitable for floor joists, roof battens, stud walls, and decking frames. The 4.8 metre length offers flexibility for most residential and light commercial applications. Consider your span requirements and load conditions when determining whether this section meets your structural needs. For longer spans or heavier loads, consult structural calculations or seek professional advice.
- 75mm width suits standard stud wall construction and intermediate joisting
- 200mm depth provides good load-bearing capacity for typical residential floor joists
- 4.8m length minimises waste on standard building dimensions
Moisture content and storage
This timber is supplied kiln-dried (KD), meaning it has been dried to a moisture content suitable for internal use. Store the timber in dry conditions before installation to maintain its moisture stability. Protect from rain and ground contact during storage and on site.
- Keep stacked timber off the ground on level bearers
- Allow air circulation between pieces to prevent moisture trapping
- Cover with breathable sheeting if exposed to weather during storage
Fixings and fasteners
Use appropriate fasteners for your application. For structural connections, select fixings that match the load requirements and timber thickness. Galvanised or stainless steel fasteners are recommended, particularly for treated timber in damp environments, to prevent corrosion and staining.
- Nails: Use ring-shank or spiral nails for improved holding power
- Screws: Suitable for both structural and non-structural applications; choose length to penetrate at least 2.5 times the thickness of the timber being fixed
- Bolts and coach screws: For heavy-duty connections requiring high shear strength
Handling treated timber
Treated timber has been pressure-treated with preservative to resist rot, fungal decay, and insect attack. Handle with standard site practices; no special precautions are required for this product. Wear gloves when handling to avoid splinters. Avoid prolonged skin contact with sawdust by using dust extraction when cutting.
- Treat cut ends with timber preservative if the timber will be exposed to weather
- Dispose of offcuts as general waste; do not burn treated timber
- Use standard hand and power tools; no specialist equipment needed